The 5 to 6 ft persimmon trees I planted in march leafed out starting mid april, but only at the tips. Now it's mid June and they're still practically the same, with only a bit of leafing at the tips. Some of the frunit buds seem to be turning black even though they haven't even flowered and sometime in May, there were these spider thread like things all over the leaf buds. The threads only appeared on the the two persimmon trees, and not on the jujube in between them. Is there a problem with the persimmons? We had an early hot spell in early April for 2 or 3 weeks then a damp cold spell foe 2 or 3 week which wreaked havoc on a lot of plants here as they bloomed too early for bees to pollinate. Is that a possible reason and I just have to wait it out?

here are some pics of the threads from back then