How-To Features Tree Registry Register your trees for customized advice. Prepare your trees for winter with this unique and beneficial kit. Appropriate for most trees and shrubs. An easy and consistent way to water your trees, flowers and indoor plants. A common problem with urban trees and shrubs is yellowing foliage as a result of iron deficiency.
Iron synthesizes chlorophyll and contributes to the lush, green color of a tree's leaves.
When there is not enough iron, or when the soil environment is such that a tree cannot access the available iron, not enough chlorophyll is synthesized and the leaves begin to turn a sickly yellow. Learn how you can fix this problem and bring back the green. A vital and often overlooked factor affecting the health of your trees and shrubs is soil. Many trees show signs of wilt and general lack of vitality. In fact, improving your tree's soil is very often the best possible thing you can do to help it stay healthy.