Tagged: Trees

Quick Notes: Mysteries of the Micorrhizae

What is a mycorrhiza? (my-kor-rise’-uh) A mycorrhiza is a symbiotic relationship between a plant and a network of mycelium in the soil.  Over 90% of plant species depend on mycorrhizal fungi to assist their roots in accessing water and minerals from the environment.  Mycelium extend the reach of a plants’ roots.   Why are mycorrhizae important? Fungi share in the abundance of sugars and other carbon-based phytochemicals produced by a growing plant each day.  They use carbohydrates absorbed from a...

How to Cultivate a Fairy Garden

  “And therefore, as a stranger give it welcome. There are more things in Heaven and Earth, Horatio, than are dreamt of in our philosophy.” William Shakespeare, from Hamlet, First Folio   Perhaps you have already made a fairy garden.  It is an endearing activity for parents and grandparents to enjoy with the children in their lives.  Full of whimsy and fun, we enter the world of ‘make-believe’ once again and see the world from a different perspective.  Everything is...

The Beauty and Promise of Trees in Winter

  There is a special beauty in the form and structure of a bare tree after it has dropped its annual crop of leaves.  Like the beauty of a classical statue, one can see the truth of its bones.  Leaves, for all of their movement and color, veil the beauty of branches and buds. Looking at a bare tree is a study in pure potential.     All of the tree’s life  draws inwards to the wood and roots as...

Tales From the Help Desk: Crape Myrtle Bark

Q.  My crape myrtles have splits on the bark.  What is going on? A.  Your crape myrtles appear to have sun scald.  Crape myrtles, Lagerstroemia indica, are considered a relatively problem-free tree. The Clemson Cooperative Extension website cites the most common problems as powdery mildew, Cercospora leaf spot, aphids, Japanese beetles, sooty mold, and the recently recognized crape myrtle bark scale. Clearly, the photo of your tree shows no indications of any of these diseases and insects. Your tree likely...

Tales from the Help Desk, Strange Markings

Q. What are the strange marks on my holly tree?  A. Those strange, rectangular shaped bare spots in the bark were made by sapsuckers, a type of woodpecker. While these birds eat insects, fruits, and nuts, they also enjoy tree sap. Here in eastern North America, the most common and destructive of these birds is the American yellow-bellied sapsucker, Sphyrapicus varius. These are migratory birds that feed in Virginia when the sap begins to run in March, and then again...

Tales from the Help Desk, Mysterious Spots

Q. What is going on with my weeping redbud? Most of the leaves are covered in spots and many have black areas.  A. The spots and blackening areas on your weeping redbud appear to be fungal infections that probably include anthracnose. It is not unusual to see redbud trees (and almost any deciduous tree) in the fall with fungal infections showing up as spots and blackened areas on the leaves. This seems to be especially common on redbud trees. The...

Building a ‘Carbon Garden’

  You may be ahead of me on this one, but the picture that came to mind when I first saw the term ‘Carbon Garden’ in the January 2021 issue of Horticulture Magazine wasn’t very pretty.   In practice, a carbon garden is not only beautiful, but this garden style proves easier to maintain than many others. A Quick Summary of the Science Like other elements, carbon is an atom that can manifest as a solid, in a liquid, or...