What Causes Yellow Needles in the Spring?

Originally posted on Michael Hagedorn:
This is Part II of last month’s post, Rain and Needle Size… …as rain is again the likely culprit. Or possibly, overwatering with the hose. This Black Pine’s needles are yellower than they should be, the result of an overly wet Midwest spring. In the post about rain and needle size, a correlation was drawn between unseasonably wet springs and long… Continue reading What Causes Yellow Needles in the Spring?