My experience has been the same. My Tiger bark's are low/no maintenance and root so easily. My one Willow leaf makes me crazy. It drops all it's leaves around November and plays dead until April. I've never tried cuttings because I don't want any more of them.Willow leaf ficus are finicky about everything to say the least. Tiger bark, microcarpa, and the elusive retusa are far stronger than willow leaf.