Nutrient Deficiency Or Pest
I have several beautiful citrus trees at home, yet the leaves are turning yellow; and on some of them, the point of the leaves are yellow with brown on the very edge--like if it were dry. I have used fertilizer for “citrus and avocado, ” but it seems that it's not working. Does it need more, or are my trees sick?
Certified GKH Gardening Expert
I would have the soil tested. It does sound like a nutrient problem, but there are several it could be and the only way to know which nutrient is lacking is to do a soil test.