|When to fertilize lawn? How about orange & apple trees?|
|Lawns will grow lush and thick if you fertilize them 4 times a year with a 3-1-2 ratio of NPK (three numbers on the fertilizer package). Use one pound of actual nitrogen per 1,000 square feet of lawn, in 4 applications: April, June, September and late November or early December.
As a general rule of thumb, bearing trees should be fertilized 3 times per year with an 8-8-8 (or similar) fertilizer. The amount applied is gradually increased about one pound per year up to a maximum of 8 pounds. This would mean that a fully grown tree would be receiving approximately 24 pounds of fertilizer in 3 separate 8 pound applications. Tree condition should be used as a guide to rates of applied material with noticeably deficient trees receiving more material and luxuriant, vegetative trees receiving less. The recommended applications can be made in January - February, May - June and October - November, although timing is not especially critical.