Summer Tree Tips From World-renowned Tree Care Expert

International Tree Climbing Champion Mark Chisholm and STIHL Make Tree Care Easy
Release Date: 6/9/2011

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Anita Gambill (757) 486-9151 

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VIRGINIA BEACH, Va. – Trees are an integral part of any landscape. Keeping them green and healthy requires a proactive approach that reaches into every season, but especially the summer. Here are a few tips from third-generation tree care expert Mark Chisholm and STIHL on what to look for during the summer and moving in to the fall.


When the heat is on, water is crucial to a plant’s survival. Yellowing leaves on hardwoods and ornamentals and yellowing or browning of evergreens can indicate a need for supplemental watering. Monitoring the amount of rainfall during the summer months and providing the trees with a cool drink can help a tree to stay healthy and help fight off any other afflictions it may have.


Some diseases are easiest to identify in the late summer or early fall. For example, Elm trees may show flagging (wilting or yellowing) or larger dying sections due to Dutch Elm Disease. Oak trees may be struggling with Bacterial Leaf Scorch, and testing is best done in the late summer. Sycamore trees and Dogwoods may get a leaf infection known as Anthracnose that could cause health complications over time. Insects such as spider mites tend to increase in populations when the temperatures rise and rainfall dwindles off.

Tree care professionals, especially certified arborists, can help you identify these problems and provide a great starting point to learn more about your own trees. To find a reputable professional, visit the International Society of Arboriculture at or the Tree Care Industry Association at


One way to gauge how vigorous your trees are is to visually assess their leaf size and color in peak season. A very light-green leaf or extremely large leaf could tell a tale of a serious stress. Leaf drop ahead of similar trees in the same general area could mean trouble as well. Comparing your trees with the same species in your neighborhood is a great way to stay on top of their preservation.


Summer storms can spell serious trouble both for you and your trees. Pruning out structural flaws and hazardous deadwood before a storm hits can help reduce damage. After a storm rolls through take great care to inspect your surroundings by looking up into the canopy and trying to identify any broken or damaged tree sections. If you find anything dangerous above the ground, call in a professional arborist to take a look and provide an expert opinion on the proper action to take. For more storm cleanup tips visit

About STIHL Inc.
STIHL Inc. manufactures the number one selling brand of gasoline-powered handheld outdoor power equipment in America for homeowners and professional landscapers*, as well as the number one selling brand of chainsaws in the world. STIHL products are sold through servicing power equipment retailers from coast to coast – not mass merchants. STIHL products sold through U.S. STIHL dealers are for distribution in the United States only. For more information or for the name of a local STIHL retailer, call toll free 1-800-GO STIHL (1-800-467-8445) or visit the dealer locator on the STIHL website at
*"Number one selling brand" is based on syndicated Irwin Broh Research (commercial landscapers) as well as independent consumer research of 2010 U.S. sales and market share data for the gasoline-powered handheld outdoor power equipment category combined sales to consumers and commercial landscapers.
STIHL is pleased to support the work of
Independent We Stand , the Tree Research and Education Endowment Fund (TREE Fund) , International Society of Arboriculture (ISA ), the Tree Care Industry Association (TCIA) , National FFA , Professional Landcare Network (PLANET) , the American Tree Farm System (ATFS) , and the National Association of State Park Directors .

About Mark Chisholm

One part acrobat, one part expert rope climber, one part tree physiologist, and several parts competitor and thrill seeker, Mark Chisholm is a third-generation, certified arborist with his family-owned Aspen Tree Expert Company in New Jersey. His expertise in tree care has made him a sought after consultant and industry spokesperson for the world of arboriculture, and he regularly travels the globe to consult with international arborist organizations.

Sponsored by STIHL, Chisholm has won every International Society of Arboriculture (ISA) New Jersey Chapter Tree Climbing Championship for the last 18 years and has conquered the wider tree-climbing world on three occasions, most recently in 2010, when he won his third ISA International Tree Climbing Championship. He will compete for the 2011 New Jersey Tree Climbing Champion title in June. Chisholm currently holds the world record in the 50-foot secured footlock climbing event, with a time of 13.8 seconds.




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