SouthEast Wisconsin Master Gardeners Milwaukee County UW-Extension Office 414-256-4600 http://milwaukee.uwex.edu 9501 W Watertown Plank Rd., Building A Wauwatosa, WI 53226-3552 Waukesha County UW-Extension Office 262-548-7770 http://www.uwex.edu/ces/cty/waukesha 515 W Moreland Blvd., AC-G22 Waukesha, WI 53188 Become a Master Gardener Volunteer UW-Extension Horticulture Websites http://hort.uwex.edu • 1-877-WIS-PUBS http://learningstore.uwex.edu UW Extension Publications: Chlorosis (XHT1002) Conifer Diseases Quick Reference (XHT1025) Deciduous Tree Leaf Disease Reference (XHT1190) Homeowner Guide to Emerald Ash Borer Treatments (XHT1181) Prune Deciduous Shrubs (XHT1015) Prune Deciduous Trees (XXT1014) Prune Evergreens (XHT1013) Salt Injury to Landscape Plants (A2970) UW-Extension Horticulture Help Lines Milwaukee County 414-256-4664 Waukesha County 262-548-7779 UW-Extension Horticulture Center at Boerner Botanical Gardens in Whitnall Park, Hales Corners, WI For More Information Graphic Design by Connie Reeves, SEWMG Milwaukee/Waukesha Counties Smaller, paler, and fewer Smaller, paler, and fewer Smaller, paler, and fewer Emerald Ash Borer may be Emerald Ash Borer may be Emerald Ash Borer may be insects or disease. serious rootzone problems, in a tree’s canopy indicate leaves and dieback of branches Smaller, paler, and fewer insects or disease. serious rootzone problems, in a tree’s canopy indicate leaves and dieback of branches Smaller, paler, and fewer serious rootzone problems, in a tree’s canopy indicate leaves and dieback of branches Smaller, paler, and fewer ash trees should be treated. larvae. Find out if your valuable S-shaped tunnels made by holes and loose bark covering the cause. Look for D-shaped Emerald Ash Borer may be ash trees should be treated. larvae. Find out if your valuable S-shaped tunnels made by holes and loose bark covering the cause. Look for D-shaped Emerald Ash Borer may be ash trees should be treated. larvae. Find out if your valuable S-shaped tunnels made by holes and loose bark covering the cause. Look for D-shaped Emerald Ash Borer may be winds can break branches ice, heavy snow and strong In both winter and summer, winds can break branches ice, heavy snow and strong In both winter and summer, winds can break branches ice, heavy snow and strong In both winter and summer, attaches to the next branch, at pruned back to where it A broken branch should be attaches to the next branch, at pruned back to where it A broken branch should be attaches to the next branch, at pruned back to where it A broken branch should be structure or neglect. weak due to poor tree especially if they are already winds can break branches structure or neglect. weak due to poor tree especially if they are already winds can break branches structure or neglect. weak due to poor tree especially if they are already winds can break branches soon after it happens. leaving a stub. Repair damage the proper angle and without attaches to the next branch, at soon after it happens. leaving a stub. Repair damage the proper angle and without attaches to the next branch, at soon after it happens. leaving a stub. Repair damage the proper angle and without attaches to the next branch, at depth show a gradual Trees planted at the proper DO depth show a gradual Trees planted at the proper circling roots hide the root Planting too deeply and depth show a gradual Trees planted at the proper DON’T circling roots hide the root Planting too deeply and DON’T circling roots hide the root Planting too deeply and roots called the “root flare”. transition from trunk to depth show a gradual roots called the “root flare”. transition from trunk to depth show a gradual telephone poles at the base. flare making trees look like circling roots hide the root roots called the “root flare”. transition from trunk to depth show a gradual telephone poles at the base. flare making trees look like circling roots hide the root telephone poles at the base. flare making trees look like circling roots hide the root heal even large wounds. Any restrict internal decay and Trees posses the ability to DO heal even large wounds. Any restrict internal decay and Trees posses the ability to heal even large wounds. Any restrict internal decay and Trees posses the ability to remove dangling wood and or fill trunk wounds. Just DO NOT paint, cut, scrape, remove dangling wood and or fill trunk wounds. Just DO NOT paint, cut, scrape, remove dangling wood and or fill trunk wounds. Just DO NOT paint, cut, scrape, tree’s natural defenses. serve to breakdown the treatments we make only heal even large wounds. Any tree’s natural defenses. serve to breakdown the treatments we make only heal even large wounds. Any tree’s natural defenses. serve to breakdown the treatments we make only heal even large wounds. Any wound requires no treatment. bark – nothing more. This remove dangling wood and wound requires no treatment. bark – nothing more. This remove dangling wood and wound requires no treatment. bark – nothing more. This remove dangling wood and against it!) will keep grass near the trunk (but NOT up Even a narrow band of mulch DO against it!) will keep grass near the trunk (but NOT up Even a narrow band of mulch DO and weed whips causes wounds of the tree with lawn mowers Hitting the bark at the base against it!) will keep grass near the trunk (but NOT up Even a narrow band of mulch DON’T and weed whips causes wounds of the tree with lawn mowers Hitting the bark at the base DON’T and weed whips causes wounds of the tree with lawn mowers Hitting the bark at the base mow close to the trunk. making it unnecessary to and weeds from growing, against it!) will keep grass mow close to the trunk. making it unnecessary to and weeds from growing, against it!) will keep grass that lead to trunk decay, root and weed whips causes wounds mow close to the trunk. making it unnecessary to and weeds from growing, against it!) will keep grass rot and death. that lead to trunk decay, root and weed whips causes wounds rot and death. that lead to trunk decay, root and weed whips causes wounds DO DON’T DON’T Wound treatments are angle without leaving a stub. another branch, at the proper cuts where the branch meets When needed, make pruning Wound treatments are angle without leaving a stub. another branch, at the proper cuts where the branch meets When needed, make pruning Wound treatments are angle without leaving a stub. another branch, at the proper cuts where the branch meets When needed, make pruning decay. Professional arborists It causes weak branches and order to lower a tree’s height. DO NOT allow “topping” in never top trees. decay. Professional arborists It causes weak branches and order to lower a tree’s height. DO NOT allow “topping” in never top trees. decay. Professional arborists It causes weak branches and order to lower a tree’s height. DO NOT allow “topping” in not recommended. not recommended. CANOPY THINNING & DIEBACK LAWN MOWER DAMAGE GIRDLING ROOTS TRUNK WOUND TREATMENT PROPER PRUNING DAMAGED BRANCHES the tree’s shade. away when the grass dies in thicken and the soil washes Roots become exposed as they the tree’s shade. away when the grass dies in thicken and the soil washes Roots become exposed as they away when the grass dies in thicken and the soil washes Roots become exposed as they trunk will cause decay. the tree. The soil on the Added soil will gradually kill except 3” of organic mulch. or cover them with anything DO NOT cut exposed roots trunk will cause decay. the tree. The soil on the Added soil will gradually kill except 3” of organic mulch. or cover them with anything DO NOT cut exposed roots trunk will cause decay. the tree. The soil on the Added soil will gradually kill except 3” of organic mulch. or cover them with anything DO NOT cut exposed roots trunk will cause decay. EXPOSED ROOTS from 3” of organic mulch to The entire rootzone benefits DO from 3” of organic mulch to The entire rootzone benefits from 3” of organic mulch to The entire rootzone benefits trunk - it will rot the bark. DO NOT put mulch on the trunk - it will rot the bark. DO NOT put mulch on the trunk - it will rot the bark. DO NOT put mulch on the keep roots cool and moist. from 3” of organic mulch to keep roots cool and moist. from 3” of organic mulch to keep roots cool and moist. from 3” of organic mulch to away from the trunk. Start the mulch several inches trunk - it will rot the bark. away from the trunk. Start the mulch several inches trunk - it will rot the bark. away from the trunk. Start the mulch several inches trunk - it will rot the bark. MULCH THE ROOTZONE DON’T DON’T DON’T DON’T