The harvest time for the pummelo is about the same as for grapefruit, ie December and January. If you live in a colder part of the valley the dryness could be caused by frost damage. Excellent information is available on citrus care in U. of A. Cooperative Extension bulletin # 8464, Citrus Trees In The Home Garden at 4341 E. Broadway, Phoenix 85040 for only $1.00. Good luck. Rod McKusick Master Gardener