All About Trees - Econo Tree Service

SOD - The Deadly Tree Killing Disease

2010-10-05T10:21:00.000-07:00

A map plotting the path of destruction that the tree-strangling pathogen known as sudden oak death is taking through the Bay Area shows new infestations in and around neighborhoods throughout the region.

The effort to track the wily killer's movements is the result of a major effort to involve citizens in the battle against the mysterious pathogen, which has killed tens of thousands of oak trees from Big Sur to southern Oregon.

Scientists at the Forest Pathology and Mycology Laboratory at UC Berkeley used tree and plant samples collected by citizens over the past two years and documented infestations in, among other places, Atherton, Oakland, Hercules, Mill Valley and on the Berkeley campus itself.

"Last year we had about 240 participants and collected over 1,000 samples. These results were placed on a map so people can see where the positives are," said Matteo Garbelotto, a UC Berkeley forest pathologist and the nation's foremost expert on sudden oak death. "This is part of the solution. If we educate and involve individual property owners, we can make a really big difference."

The map shows infestations spreading throughout the East Bay, especially in the Hercules-Pinole area, Orinda, Moraga and in Redwood Regional Park, Wildcat Canyon and Tilden Park. It is creeping toward south Oakland and has recolonized on the Berkeley campus after it was thought to have been eliminated nine years ago, Garbelotto said. The pathogen is moving southward and eastward along the Peninsula, where it has infested Woodside, Atherton and Los Altos, according to the map. It was detected all over Tamalpais Valley, in Marin County, and just west of Healdsburg and Windsor in Sonoma County.

"Tamalpais Valley is an entire community that lives in a forested area that is really infected," Garbelotto said. The same goes for Carmel Valley Village, where the microbe was detected in several trees on the edge of the community. "It is a prime area for the disease to explode. The houses themselves are in the forest, so I can really see some potentially dangerous consequences," Garbelotto said. "The people there don't really know what is going to hit them."

Sudden oak death, first discovered in Mill Valley in 1995, exists in forests and wildlands in 14 California counties and in Curry County, Ore. It kills oak trees, especially tan oaks, which have nearly been wiped out in portions of Big Sur, Sonoma Mountain, Jack London State Park, China Camp State Park and Marin Municipal Water District watershed lands near Mount Tamalpais.
The disease, known scientifically as Phytophthora ramorum, also has 107 susceptible host plants, including such common garden ornamentals as camellias and rhododendrons. Most hosts survive, but they help spread the disease to oaks. Researchers have found that infected California bay laurels are the most effective spreaders of the deadly microbe. Symptomatic bay leaves are often the first sign that the pathogen has arrived at a location. The pathogen also is known to spread in water and has been detected in numerous waterways, including the Crystal Springs Reservoir.

Arborists and ecologists are afraid that sudden oak death could eventually denude California's golden hills of its signature tree. As it is, experts predict as many as 90 percent of California's live oaks and black oaks could die within 25 years. The mapping of the disease, which was funded by the U.S. Forest Service, was possible because of what Garbelotto called "SOD blitzes."
The blitzes, which have attracted almost 500 participants around the Bay Area over the past three years, are organized by neighborhood and community groups. In them, citizens go out and collect mostly bay leaves that are then tested in the Berkeley laboratory. It is the first community-based effort to combat the disease.

John Chavez, a retired telecommunications technician and gardener, said he was among 50 people who collected samples in Sonoma County over a three-day period in April. "This is a way for people to get involved and help in this seemingly relentless problem," said Chavez, 58, of Santa Rosa, who learned that the disease has spread from Healdsburg west toward Forestville, Occidental and Sebastopol. "I want to help save our native California oaks. The more of us who get involved, the better chance we have of stopping this deadly pathogen." Homeowners in infected areas can remove bay trees, a step that he said can increase the survival rate of nearby oaks tenfold, Garbelotto said. Oak trees also can be sprayed with phosphonate, which has proved to be effective against the disease.

Garbelotto urged people in infected areas not to do large-scale projects such as grading, soil removal or tree pruning during the rainy season because it can help spread the disease.

"Each community that learns they have sudden oak death in their neighborhoods should say, 'Hey I better do something,' because by the time you notice the trees are dying, it is already too late," Garbelotto said. "We aren't curing the disease, but if we can continue to involve hundreds
of people a year in the fight, it will have an impact on the survival of the tree."

For more information, here is the complete article.

To have your trees checked for this deadly disease, please call us at 650-367-4900

Pooktre Shaped Trees

2010-09-07T12:47:00.000-07:00

In 1987 Peter had the idea of growing a chair. In 1995 Peter and Becky became life partners. One year later Pooktre was born. Together they have mastered the art of Tree shaping. Pooktre has perfected a gradual shaping method, which is the shaping of trees as they grow along predetermined designs. Designing and setting up the supporting framework are fundamental to the success of a tree. Some are intended for harvest to be high quality indoor furniture and others will remain living art.

More info can be found here.

Firewood

2010-08-04T09:02:00.000-07:00

We have seasoned firewood for sale - perfect for outdoor firepits, fireplaces, and wood-burning stoves. We sell different sizes of wood, and different amounts - please give us a call for all your wood burning needs.

650-367-4900

What does seasoned mean?

Seasoned means timber that has been dried for a period of time to reduce the moisture content of the wood. The lower the moisture content of the wood, the better the logs will burn and the more heat will be produced. If you use logs made from timber that has recently been cut down, the moisture content will be far higher. These logs will burn, but so much energy will be used in evaporating the moisture, very little heat will be produced. A seasoned log is generally thought of as having a moisture content of less than 20%. The lower the moisture content the better! Our logs have been well seasoned and are generally much lower than this 20%.

Oldest Trees on Earth - Bristlecone Pine

2010-06-30T11:11:00.000-07:00

Our own intrepid explorer Henry made the trek out to see one of the oldest living things on earth, the Bristlecone Pine

"For eons the bristlecones (Pinus longaeva & aristata) have flourished atop the arid mountains of the Great Basin, from Colorado to California, enduring extreme hardships and silently adjusting to their environment. Their exquisite beauty was known to few. Their great age was known to nonenot until 1953."

For more info, please see the following link:

http://sonic.net/bristlecone/Schulman.html

Sudden Oak Death

2010-05-12T14:33:00.000-07:00

Sudden Oak Death (or SOD) is a very real danger facing Oaks and other trees that can be carriers of SOD in parts of the Bay Area.

"Since the mid 1990s, P. ramorum has caused substantial mortality in tanoak trees and several oak tree species (coast live oak, California black oak, Shreve oak, and canyon live oak), as well as twig and foliar diseases in numerous other plant species, including California bay laurel, Douglas-fir, and coast redwood. The pathogen was also discovered in European nurseries in the mid 1990s, and it has since spread to wildland trees in the U.K. and the Netherlands. Although the first P. ramorum-infested California nursery stock was identified in 2001 (Santa Cruz County), the U.S. nursery industry was not widely impacted by the disease until 2003, when the pathogen was detected in California, Oregon, Washington, and British Columbia nurseries. "
http://www.suddenoakdeath.org/html/history___background.html

For more information, please check out this link:
http://www.plantmanagementnetwork.org/php/shared/sod/

Fertilizing Trees

2010-03-18T11:41:00.000-07:00

"Trees in urban and suburban environments are often under high stress conditions due to low moisture availability, soil compaction, physical damage, nearby construction, and competition from turf and nearby trees and shrubs. Fertilizer applications may reduce, but cannot eliminate, environmental stresses such as these. It is important to keep newly planted trees watered and pruned and to keep weeds away from their bases to avoid excess stress."

More information here.

We are a TCIA Member!

2009-11-17T08:39:00.000-08:00

Established in 1938 as the National Arborist Association, today's TCIA is a trade association of more than 2,000 commercial tree care firms and affiliated companies.

TCIA develops safety and education programs, standards of tree care practice, and management information for arboriculture firms around the world.

Through TCIA's Accreditation program, consumers can be assured of hiring a professional, ethical tree care company that has been inspected by TCIA for proper business practices, professional employees, quality service and customer satisfaction.

We provide continuing education, training, conferences and publications to promote the safe and appropriate practice of tree care, including Tree Care Industry magazine, the most circulated and read publication in the industry, and TCI EXPO, the world's largest tree care trade show.

About the Board

TCIA's Board of Directors is made up of 10 men and women who have been proposed by the membership, selected through the Nominations Committee and the board, and elected by the members by mail ballot. The role of the board is to set policy and to strategically direct the future of your association.

The board meets three times per year usually in June in Manchester, New Hampshire near our office; at TCI EXPO; and at the Winter Management Conference.

TCIA assists tree care companies in providing services such as ...

Pruning ... Removal ... Plant Health Care ... Cabling & Bracing ...
Transplanting ... Consulting ... Fertilization .. Lightning Protection

HK retires from the cross season

2009-11-17T06:01:00.000-08:00

read this honorary tribute, thanks Keith
http://crossbabble.blogspot.com/2009/11/henry-kramer-retires-from-racing.html

Why Do Tree Limbs Break?

2009-11-16T13:59:00.000-08:00

Why Limbs Fall in Your Yard

Travel around a leafy neighborhood after a storm and you will see tree limbs, large and small, scattered about the ground. Why do some limbs fall in high winds or after ice storms while others merely bend? Should you worry about that large limb overhanging your driveway?

“One reason trees fail is weak branch unions,” says Peter Gerstenberger, senior advisor for safety, standards and compliance with the Tree Care Industry Association. “Homeowners can educate themselves about tree limbs, but they should call a professional arborist if they are worried about an overhanging branch.”

Trees may suffer from naturally formed imperfections that can lead to branch failure at the union of the branch and main stem. There are two types imperfections that create weak unions: a branch union with included bark, and an epicormic branch.

Weak Unions

Branch unions can be characterized as strong or weak. Strong branch unions have upturned branch bark ridges at branch junctions. Annual rings of wood from the branch grow together with annual rings of wood from the stem, creating a sound, strong union all the way into the center of the tree.

A weak branch union occurs when a branch and stem (or two or more co-dominant stems) grow so closely together that bark grows between them, inside the tree. The term for bark growing inside the tree is “included bark.” As more and more bark is included inside the tree, the weak union is formed that is more likely to fail.

In storm damage surveys conducted by the University of Minnesota ’s Forest Resources Department, 21 percent of all landscape trees that failed in windstorms failed at weak branch unions of co-dominant stems. Some species are notorious for having included bark: European mountain ash, green ash, hackberry, boxelder, willow, red maple, silver maple, Amur maple, cherry and littleleaf linden.

Epicormic Branches

Epicormic branches (also called water sprouts) are formed as a response to injury or environmental stress. Epicormic branches are new branches that replaced injured, pruned or declining branches. Commonly, epicormic branches form on the stems and branches of topped trees. When old, large epicormic branches are growing on decaying stems or branches, the epicormics are very likely to fail.

Epicormic branches, by their very nature, form weak unions because they are shallowly attached instead of being attached all the way to the center of the stem. Epicormic branches grow very quickly so they become heavy very quickly. After a time they lose their connection to the main branch and may fall to the ground because the underlying wood cannot support their weight.

If a weak union is also cracked, cankered or decayed, the union is likely to fail, causing the branch to fall off the tree. Sometimes, ridges of bark and wood will form on one or both sides of a weakened branch union in order to stabilize the union. The branch is very likely to fail when a crack forms between the ridges.

Econo saves Cat stuck in tree four days

2009-11-13T15:19:00.001-08:00

trees do amazing things

2009-11-05T15:26:00.001-08:00

More Storm Damage Pictures

2009-10-20T09:31:00.000-07:00

This massive oak came down during the storm last week - this tree was also home to a large beehive that had quite a bit of natural honey.

Fertilizing Trees

2009-10-20T09:25:00.000-07:00

Should I fertilize my trees?

Trees often require fertilization at some point in their life span. Remember, most trees' natural environment is the forest. There nutrients are continually recycled as leaves and other plants, and even animal material, fall and decompose on the forest floor. When you put a tree in a landscape setting it is usually deprived of these nutrients.

One thing you can do is try to recreate the tree’s natural environment by providing mulch rings. (See Mulching.) Most people, however, will not be able to mulch their whole yard! Fertilization is needed by many trees to replace the nutrients they are missing.

Like any other landscape plants, shade trees will respond to fertilization. Most shade trees exist in nature without much care, but transplanting trees into urban areas or man-made conditions can create problems. Often these trees will be growing in restricted root zone areas, be surrounded by pavement or compacted soil or even be physically damaged by construction activities. One should realize that the root system is just as important (and delicate) as the above ground parts. Fertilizer alone will not improve the health of a tree stressed by one of these environmental conditions. Fertilizer is only one factor in the complex formula of plant requirements. Here’s how to detect if your tree needs fertilizing. Symptoms of a nutrient deficient tree include:

a slow rate and low amount of annual growth on twigs and trunk,
smaller than normal foliage,
off-color foliage,
increased numbers of dead branches,
tip-die back in branches,
and increased rates of disease and insect problems.

Trees that possess these symptoms generally would respond to a fertilization treatment. One should make sure that nutrients (or lack of) are the problem before fertilizing. Other common tree disorders to be aware of in urban areas would include poor planting techniques, moisture problems, construction damage, girdling roots, or utility leaks from a natural gas line or sewer line.

How does the arborist determine when to fertilize? Why does my tree need a soil test?

Arborists have a number of tools at their disposal. The best is the arborist’s knowledge of local soil and environmental conditions. The arborist may be able to make a fertilization recommendation simply by examining your tree and yard. This saves the client time and money. On other occasions the problem may be more complex and the arborist will recommend a soil and/or foliar analysis to determine the problem.

Your arborist does know that most shade trees growing in landscape settings will need nitrogen. Nitrogen is not stable in the soil. It is easily washed away by water and may periodically need to be replaced.

More information is also on our website!

Storm Damage

2009-10-16T09:25:00.000-07:00

The latest storm did some real damage. This tree should of been removed years ago.

2009-09-21T09:09:00.000-07:00

Pollarding
Examples of Pollarding

Multi Knuckle Pollard

(click on picture to enlarge)

For many centuries in Europe, trees were maintained at a certain height with regular pruning.
This practice called pollarding, maintains a tree at a specified height, sometimes for centuries, and provides a formal look to landscapes. Traditionally, trees have been maintained at 20-30ft tall. Pollarding can be used to keep a large, mature tree small if it was located in a place with restricted soil space, such as a planter, narrow soil strip, car park or footpath cut out. It is also useful to control size if a tree has been planted too close to structures such as buildings, street lighting or electric wires.

Once begun it is essential that pollarding continues. Preferably, the pollarding process should begin when a tree is very young. We would leave one to two inches of stub if necessary to ensure that there will be buds to initiate next years sprouts. A knuckle of tissue called the pollard head resembling a ball develops several years after the first cut was made. Most shoots grow from this tissue, which enlarges slightly each year. Most are orientated upright; they do not branch and grow at a rapid rate. We cut back to this knuckle at each pruning. Shoots originating below a pollard head should be removed each time the tree is pruned.

A clear distinction should be made between pollarding and topping. Topping can be harmful to trees and can initiate decay inside a tree. Pollarding is a high maintenance practice requiring repruning every 2 to 5 years, however it can create unique trees that live for a very long time.

It should be noted that different species of trees respond to pollarding in different ways and pollarding may not be suitable Willow Trees have approximately 95% survival rate whereas Beech Trees rarely survive the procedure.

Tree Roots Need Protection

2009-09-09T13:40:00.000-07:00

This is an article from the TCIA, reposted by the Reader here:

Tree Roots Need Protection

Trees are hardy plants, and their roots fight back against man-made limits around them. In the urban and suburban landscape, tree roots often are forced to grow between buildings or under driveways and walkways. As roots grow, they will break walls, pipes and patios, causing damage to properties.

Plan before you plant
“Before you plant a new tree in your yard, you need to understand how a tree could damage your property and take appropriate measures to prevent that damage,” advises Tchukki Andersen, staff arborist with the Tree Care Industry Association.

Woody tree roots thicken as they grow, gradually pushing shallow roots toward the surface. Since soil near the surface is best suited for root growth, most tree roots are just below the surface – putting them in conflict with man-made obstacles. Where the soil is covered by a solid driveway or patio, upward growing roots don’t experience the normal signals (increased light and air) that they are reaching the surface. As a result, they often grow against the underside of pavement.

“Most damage is found six feet or less from the tree,” notes Andersen, “since roots become smaller and less damaging the further they are from the trunk. Keep this in mind before you plant. That small sapling could become a large shade tree with roots spreading 30 or 40 feet outward from the trunk.”

Fixing the problem
Some homeowners, masons and landscapers deal with intrusive roots by grinding down or removing them. This can be expensive and is very harmful to the tree. Wounding a tree’s roots creates points of entry for pathogens, leaving a tree vulnerable to disease. Cutting major roots also reduces a tree’s ability to take up nutrients and water, leaving it more susceptible to drought. Finally, reducing a tree’s structural support from the roots increases the danger the tree will topple onto your house in high winds.

Keep these cautions in mind when dealing with a problem tree:

The farther you cut from the trunk, the less threat to the tree’s health, and the less danger of creating a hazard.
Try not to cut roots greater than 2 inches in diameter.
Roots recover better from being severed when you: cut them cleanly with a saw instead of breaking them with a backhoe; mulch and water well after pruning; and fertilize in early fall or spring.

Deciding what to plant
TCIA advises selecting trees for your landscape that will cause less damage, that match species with site conditions and – most importantly – that you do not plant large shade trees within 12 feet of hardscapes (sidewalks, driveways). Since the health of trees in your yard is put at risk whenever root systems are cut back or damaged, anything that can be done to reduce the damage caused by tree roots will also benefit your trees.

In areas within 5 to 7 feet of a paved area or structure, plant trees that grow to a mature height of less than 30 feet. In areas within 7 to 10 feet of a paved area or structure, plant trees that grow to a mature height of less than 50 feet. Reserve trees that mature higher than 50 feet for areas with at least 12 feet of clearance. This allows adequate space for the roots. Also, before you plant check for overhead utility lines and leave adequate space for that tree to mature.

Find a professional
A professional arborist can assess your landscape and work with you to determine the best trees to plant. Contact the Tree Care Industry Association (TCIA), a 71-year-old public and professional resource on trees and arboriculture. It has more than 2,000 member companies who recognize stringent safety and performance standards and who are required to carry liability insurance. TCIA also has the nation’s only Accreditation program that helps consumers find tree care companies that have been inspected and accredited based on: adherence to industry standards for quality and safety; maintenance of trained, professional staff; and dedication to ethics and quality in business practices. An easy way to find a tree care service provider in your area is to use the “Locate Your Local TCIA Member Companies” program. You can use this service by calling 1-800-733-2622 or by doing a ZIP code search at TCIA

Root Collar Excavations

2009-09-03T10:00:00.000-07:00

This is a great article on Root Collar Excavations, from the University of Minnesota (original can be found here):

Normal vs. Abnormal Root Systems
Root collar examinations are used to determine if root system abnormalities are impacting a tree. To determine if a root system abnormality exists, one needs to compare against a normal root system. Field observation, along with a review of species-specific root system profiles, will help provide the practitioner with an understanding of a normal root system. An easy way to observe normal root systems is to take a walk in the woods. But in general terms, what is a normal or ideal root system?

Normal root systems are often described as having main (first order) laterals that radiate from all sides of the stem/root interface (Figure 23). The number of main laterals ranges from a few to more than a dozen. Trees in forests with a greater number of main laterals than other trees tend to become dominant survivors in a competitive forest community (Kormanik 1986). The root diameter of main order laterals decreases rapidly through the zone of rapid taper into ropelike roots with approximate diameters of 0.5 to 3 inches. Root spread is usually well beyond the drip line, commonly to about three times the branch spread (Gilman 1997).

Fig. 23 - A normal littleleaf linden's root system, showing the larger, main order roots radiating out from the stem/root interface (root collar).

Most main-order laterals originate from the root collar and parallel the soil surface at depths of a few inches to a foot or more. Many tree species also produce oblique roots, which grow at a sharp angle into the soil and stabilize trees. Sinker roots grow downward from lateral roots on approximately 75% of tree species, function in support and absorption, and usually are located within 6 to 10 feet of the stem.

From main-order laterals arise secondary and tertiary woody and nonwoody roots, which magnify the absorption of water and nutrients. These roots proliferate in zones of favorable moisture and nutrition. Most exist within the top foot of the soil surface.

Stem diameter normally increases from the top downward. Root flares and/or stem tapers are common (except in some conifers) due to a growth pattern in which growth is greater on the top of the root than the bottom. When trees are planted deep or soil fill is placed over the root system, this characteristic pattern might not be visible.

In landscape trees, abnormal root systems often develop through cultural practices (Figure 25). Nursery production methods such as the use of containers that induce encircling roots, propagation that encourages stem-origin adventitious roots, or tillage practices such as "hilling-up" plowing to control weeds can create abnormal root systems, as can planting practices such as deep planting, narrow planting holes, and confined planting locations such as small planters. Tree vitality and longevity is not always harmed by production and planting methods. In some forest plantations developed from seedlings with abnormal root systems, seedlings successfully developed into mature trees because of adventitious root development and fusion of the abnormal root system into a central mass (Van Eerden and Kinghorn 1978). In landscape trees a clear picture is also lacking, but the development of a new root system can overcome an existing abnormal root system (Gilman 1997). Regardless of the rules and exceptions, an examination of the root system and its relationship to stem condition is a vital aspect of tree health evaluation, problem diagnosis, and assessment of root system condition.


Fig. 25 - Abnormal root systems such as these often develop through propagation and or cultural practices.

Performing the Examination
A root collar examination typically takes from fewer than 20 minutes for smaller trees and less invasive examinations, to more than two hours for larger trees or more extensive operations. Equipment can range from simple and basic-trowels, knives, pruners, stiff brushes, saws, and shovels-to elaborate and specialized-tile probes, portable generators, air excavation (Smiley 1999b), wet/dry vacuums, wood gouges, chisels, and water.

Most diagnostic examinations need not be extensive. Begin by probing into the soil near the trunk flare with a 3/8-inch-diameter tile probe or stiff wire (coat hanger gauge) to detect the depth of branch and encircling roots and to determine the soil area around the tree stem you need to remove (Figure 28). For the average size landscape tree (9 to15 inches d.b.h.) with roots 6 to 10 inches from the surface, a 12- to18-inch-wide examination area is usually sufficient. If primary branch roots are deeper than that, you will need to widen the examination area as the examination progresses (Figure 29).

Fig. 28 - Probing the soil area near the root flare can help determine the extent (depth and width) of the examination and if it's warranted.

If sod surrounds the trunk, strip it away to a depth of approximately 2 inches. If the tree is mulched, carefully remove the mulch and any plastic or fabric ground cover beneath the mulch. Loosen the soil gently in the examination area with a trowel, hand cultivator, or knife and remove with a trowel or wet/dry vacuum. Do not use spades or shovels unless absolutely certain that no roots exist in the excavated soil. Gradually loosen and remove deeper layers of soil until the stem/root conflict or the root collar flare is exposed (Figure 30).

You can also use compressed air or water to expose tree roots. Air is blown at the soil through a tool called an Air Spade� to expose the roots. Water under low to high pressure has been used for more than 50 years to expose roots.

Choose a method based on availability of equipment, available time, and your objectives. Shallow examinations of smaller trees do not warrant elaborate equipment, such as vacuums and generators. However, with larger trees and examination areas, vacuums and portable generators are much more efficient and safe. Vacuuming loosened or water-saturated soil is less destructive to roots, reduces the chances of cutting through utility cables, and offers a clearer view of the root/stem conflict area.


Fig. 29 - The examination area for this 7.5-inch d.b.h. sugar maple was 11 inches deep and 30 inches wide. Total time involved with a vacuum was approximately 30 minutes.	Fig. 30 - A small towel and vacuum may be used to loosen and remove soil during a nondestructive examination

Welcome!

2009-09-03T08:44:00.001-07:00

This is the official blog of Econo Tree Service, a tree trimming and management company in Redwood City. We'd like to set up this blog as a way to pass on information, tips, and warnings for tree health & care, to those in our community and beyond.

If you have any questions, comments,, or would like to learn more about our services, please drop us a note, or call!

Thanks for reading our blog - we hope you like it!

The Econo Tree Team
650-367-4900
webmail@econotree.com