The Q&A Archives: Oleander Leaves Turning Yellow

Question: About 6-7 weeks ago (early April) I planted a potted hardy red oleander. It has done pretty well, with green growth, red flowers, etc. In the last several days, I've noticed some yellow leaves mostly near the bottom of the plant. What gives? Is it still adjusting to transplant shock
or what?

Answer: Yellow leaves at the bottom of a plant (older leaves) usually are a sign of nitrogen deficiency. (If newer leaves are yellow with green veins, it's usually an iron deficiency.) Try applying a balanced landscape plant fertilizer and see if that doesn't clear it up.

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