Meyer lemon and lime tree leaves are curling.
My trees are in ground. soil is heavy clay which I have added sand to help with drainage but neither are looking good.
Merced County California citrus
Thank you for your question. Unfortunately, adding sand to clay creates cement. The better remedy is to add organic matter to improve drainage. Here is an Extension article from the closest county I could find, that may have ideas: http://sacmg.ucanr.edu/files/72239.pdf Good luck!