I think the Phoenix is about 65 days, but DTM is relative - to weather (temps), growing conditions (soil) and moisture (no rain - ha ha). I think the cooler spring we had just kept the plants in neutral until it got warmer. Then we go from cool to hot with no happy medium. The Phoenix and any cherry varieties should set fruit into the heat, but unless the nights stay cool what we have on the others will be what we get.
The tough skins may be the variety or a watering issue - ie: not enough water. My new watering schedule so far seems to be working, but I'm afraid I may have to step it up in the heat and deal with more cracked 'maters.
