|What is cause/remedy for yellowing on the edges of leaves on fig trees -- also noted on maples?|
|There are several possible causes for the problem on your fig and maple, and they may not be related. |
Figs are susceptible to nematode attack, especially on sandy soils. These pests stunt the root system and create a number of stress related problems on above ground plant parts. If you dig up a root near the surface and see swollen areas, nematodes are the probable cause. There is no practical control for nematodes. The best way to help the tree is to apply a deep mulch (about 4 inches is good) of compost and keep the tree well watered. Add 2 or 3 inches of composted material each spring.
Another possible cause on both trees is lack of water or poor nutrition. Apply 1 cup of balanced fertilizer in the area beneath the branches and give your tree a good, deep soaking once or twice a week.
A final possibility for both trees is damage from a broadleaf weed killer. Treating the area around the tree with a weed and feed can result in such damage. There is no remedy for herbicide injury. If it is a minor case, the tree will recover in time.
Good luck with your trees!