How do I know which citrus fertilizer is best for our 15+ year old orange and lemon trees? The greenery is plentiful and healthy looking on all trees except our mandarin orange, which is losing leaves like crazy. Do I choose a food with low nitrogen to improve the flavor and juiciness or high nitrogen? Low phosphorus or high?
Fertilizing Mature Citrus Trees
Certified GKH Gardening Expert
You want lower nitrogen and higher phosphorus. These articles will be of interest to you: