The Garden Community for Garden Lovers

Florida, United States Us

Why are the nuts on my pecan trees turning black and falling off

Answers Try this web site - it might be helpful.

24 Aug, 2012


The web sit will probably have more info, but around here, black pecans mean zinc deficiency. We do three things to combat this:
First, apply compost, compost tea, and/or humic acid regularly over the next year, to release the zinc already in the soil.
If that doesn't work, apply zinc sulphate in the following amount: 10 lbs., plus 1 lb. per inch of tunk diameter. That should be applied in foot deep holes, about 2 feet apart, around the drip line of the tree.
If that doesn't work, spray the emerging foliage 2-3 times with a 1 tsp. per gal. solution of zinc sulphate, possibly mixed with Yucca extract, every spring. Considering the size that pecan trees grow to, that is a last resort, since it involves renting major power equipment to reach the top of the tree.

27 Aug, 2012


Blimey, I didn't realise they needed so much attention.

27 Aug, 2012


Only in alkaline soil, Cammomile. Most parts of the southern 2/3 of the U.S., they grow like weeds.

29 Aug, 2012

How do I say thanks?

Answer question


Not found an answer?