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Prescribed Fertilization Can Help Your Trees Now!

Prescribed Fertilization Can Help Your Trees Now!

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Time to Water

Water has been found to be the most limiting factor for plant growth and stress reduction. How much water does a tree use or need? Generally, 1 inch of water per 10 day period is needed to reduce stress on trees. This can be provided by Mother Nature, or you. Use a rain gauge to monitor rainfall and supplement with watering when necessary. It is strongly suggested to use your finger to check the soil for moisture. If the soil is damp wait a few days and check again. Avoid overhead watering or light frequent watering which can be problematic. Pines and spruces with fungal diseases are best not watered on the foliage. Supplemental watering when dry in June, July, August and September is critical.

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Beauty and the Beast

By Jean Ferdinandsen Certified Arborist WI-0149A The beautiful flowers of crabapples herald spring in Wisconsin. Different shades of pinks, whites, reds, and maroon offer a color spectacular that lasts 4 to 10 days for each cultivar. The various forms and small to medium size stature of crabapples makes them useful in a variety of sites. However, shortly after the peak bloom time, many crabapples switch from “beauty” to the “beast”. The leaves progressively turn a sickening yellow or brown and later fall off. The slowly thinning tree may look as if it is dying. The culprit is a fungal disease called apple scab. Necrotic, irregular shaped, olive brown spots on leaves are usually found along the mid-rid or in association with leaf veins. The scab fungus infects either leaf surface, flower parts, fruit, and succulent twigs. It draws nutrients from the living tissue. Chlorosis (yellowing) and death of the leaves follows. The tree is robbed of the foods produced by photosyn...

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Weather Stressed Plants

We are having a beautiful stretch of weather in southeastern Wisconsin. The warm days and cool nights are great for the outdoor activities and projects we were denied most of the summer due to rain and mosquitoes! The crews at Wachtel Tree Science are happy to be out working in such great weather. I do not know about you but I feel like I have earned some nice weather to enjoy my yard. The problem is, are your trees enjoying your yard? We have now gone weeks without rain and the soil is hard and dry. The fine roots of trees need moisture. This water is not only sent up to the top of the plant for all of the life processes that are carried on in the trunk and crown but is also needed for roots to thrive and grow. A mature tree can use a ton of water a day! Do your trees have that much water? Fall is one of the most important times of the year for root growth. If we have good roots, we will have a healthy tree. One other critical factor in tree health is soil li...

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Getting Ready for Winter

It is not to late to mulch. If your mulch is thin at the base of plants, top dress before winter. Mulch will insulate the roots, moderating temperature extremes; maintain soil moisture and control weeds next season. Long term as mulches biodegrade they add organic matter to the soil, building better soils. Proper mulching is one of the best things we can do for our trees. Keep mulch about two inches away from the trunks and stems, mulch the soil and root system – not the trunk! By Bill Reichenbach Wachtel Tree Science Certified Arborist WI-0188

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Viburnum borer

Almost all types of viburnums have become susceptible to viburnum borer. This insect tunnels into the stems at, or slightly below ground level. Look for damage in this area. Stressed plants are more likely to become infested. Water properly to avoid drought stress and renewal prune if appropriate to keep plants vigorous.  Symptoms may be a curling and stunting of leaves and premature fall color, as well as dieback of some portions of the plant. Insecticide treatments require multiple applications are warranted only on high value plants. By Jean Ferdinandsen Wachtel Tree Science Certified Arborist # WI0149A

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Japanese beetles are back in town

 Because these obnoxious, metallic green and brown beetles feed on over 250 different species of plants (roses, lindens and maples are favored), high expectations are given to traps to help save the day. Japanese beetle traps are very effective in attracting and trapping adult Japanese beetles, but they are ineffective in protecting your susceptible trees and shrubs from Japanese beetle feeding damage. This seemingly contradictory answer requires an explanation. Japanese beetle traps, sold at most garden center outlets, usually contain two separate, chemical lures. One lure is a feeding attractant that attracts both male and female beetles. The second lure is a pheromone that attracts male beetles. These lures work very well in attracting hundreds, even thousands of adult beetles toward the trap.  Therein lies the problem. Many adult beetles are attracted into the area around the trap, but they do not necessarily get caught inside the trap. Susceptible plant species loc...

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Don't Wait...Winter's Great For Pruning!

Winter is an excellent time for……   Pruning Analyzing storm damage Identifying defects in structure which may need cabling or bracing Inspecting for gypsy moth egg masses Inspecting for sphaeropsis twig blight on pines Inspecting for cytospora canker on spruce Inspecting for spruce gall adelgids Inspecting for stem and trunk cankers Inspecting for many other insect and disease problems Identifying and remedying crown conflicts between trees For more information the services Wachtel Tree Science provides, see our website at: HealthyTrees.com. So certainly do not hesitate to contact Wachtel Tree Science in winter – and if we are on your list for spring maintenance or treatments, give us a call now so we can assess your needs and schedule you for the most advantageous time. Disease and damage do not wait until the weather warms up, and at Wachtel Tree Science, neither do we!

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Emerald Ash Borer in Wisconsin

Emerald ash borer (EAB) is a very serious problem that threatens all ash trees in the Midwest. As of 8/5/08 it has been found in Wisconsin and is extensive in northern Illinois. The million dollar question seems to be, "When should I start treatment if I want to protect an ash tree?" One consistent fact is that whenever they have found EAB, they always say it has been there for 3 to 6 years. It is important to keep this in mind as you make your decisions. Another important point to remember - you have time to deal with this! Read the Fact Sheet on Emerald Ash Borer (EAB) for more information on the threat to ash trees in Wisconsin. A Certified or Board Certified Master Arborist can give you advice before you take removal, planting or treatment action. Contact Wachtel's experienced staff for help dealing with the emerald ash borer threat to your ash trees.

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