Palms and cycads are often thought of as low maintenance plants; however, most palms require regular pruning to keep them attractive and safe. Many palms maintain a set number of live fronds. A regular turnover of foliage occurs as dying lower fronds are replaced by new ones at the apex. These dead fronds are not detrimental to the health of the tree.
If there is an excessive number of older yellow fronds determine the cause before pruning. There could be a severe nutrient problem caused by a potassium or magnesium deficiency that could worsen if the palm is pruned or fertilized with high nitrogen or the wrong type of fertilizer.