My plants have developed brown spots andyellowing on the lower leaves that arecurling up, this is spreading to the higher leaves. Do you know what this is andhow I can cure it andprevent itfrom happening in the future?
This is a classic description of nitrogen (N) deficiency. 1t can be cured by feeding the plants adequate amounts of a high N fertilizer. 1n the future, make sure to fertilize with awell-balanced mix.
You will notice three numbers listed on the label of all fertilizer packages. They represent the percentages of respectively nitrogen (N), phosphorous (P) and potassium (K), often called N-P-K. Choose asoluble or liquid fertilizer that has a higher listing for N than P or K.