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Trees Category

  • Don’t prune mid-March through June

    MO Tree Health News: March 9, 2016It's time to stop pruning oak trees! Remember the rule for oaks, “Don’t prune mid-March through June”. Oaks become more susceptible to oak wilt a couple weeks before budbreak occurs in the spring. Fresh wounds...

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  • Bring Spring Inside

    Late winter is a great time to bring some color into your home with branches from your spring-flowering trees and shrubs.  Forcing branches into bloom is easy and this is the perfect time of year to do this simple project. ...

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  • Pruning Fruit Trees

    Fruit trees can be pruned from now through March as long as the wood isn’t frozen. Following are some general recommendations on pruning mature fruit trees followed by more specific instructions on each species. If you have young fruit trees, see the accompanying...

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  • Tree Leaves and Turf

    It's that time of year again. Leaves are rapidly falling from deciduous trees so it's a good time to stop and think about options for handling the litter. Although a scattering of leaves won’t harm the lawn, excessive cover prevents...

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  • Trees Losing Bark and Dying

    Some trees such as sycamore, silver maple and redbuds naturally lose the outer layer of bark, especially during years of good growth. This is a natural process and is not a cause for concern.However, this year, we are seeing a...

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  • When are Apples Ready to Pick?

    Apples mature over a long period of time depending on variety.  Some varieties such as Lodi can mature in July and others as late as October. Here are some guides to help you decide when to pick your apples. Color...

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  • Are You A Tree “Volcano Mulcher”? Hope Not

    Crestwood, KY (May 29, 2015) — Thanks to tree friend Paul Cappiello at Yew Dell Botanical Gardens for calling out the practice of “volcano mulching” and demanding an end to it. His article created a firestorm on social media this...

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  • Emerald Ash Borer Adults Emerging Soon

    Adults of the emerald ash borer (EAB) will start emerging about the time that black locust blooms and then be around through July. Black locust flowers are just starting to open in Columbia as of April 28. EAB adults are...

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  • April Gardening Calendar

     Category     Week Activity       1 2 3 4    Ornamentals x x x x Study your landscape for gaps that could be nicely filled with bulbs. Mark these spots carefully and make a note to order bulbs next August.  ...

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  • EAB found in White Fringe Trees in Ohio with high pest populations

    White fringetree (Chionanthus virginicus) has been found attacked by emerald ash borer (Agrilus planipennis Fairmaire) by Don Cipollini, a professor at Wright State University in Ohio Details A larval specimen and a partial adult specimen extracted from this tree have...

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University of Missouri Extension Master Gardener Program