Answer: If all the cultural and environmental conditions are the same for both palms and one has off-color foliage, I'd fertilize the one that is struggling. Don't prune the fronds off - as long as it is green, it is helping the plant by converting energy from sunlight into carbohydrates for the roots. Wait until the fronds are completely yellow or brown before removing them. When you feed, use a fertilizer formulated especially for palms and feed in quantities and the frequency as recommended on the label. It may take several weeks for you to see a change in your palm so continue to give it excellent care and it should perk up for you. Best wishes with your garden.
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