Possible blueberry trouble?
Last October I planted 4 dozen highbush blueberry bushes of 6 varieties. Natural turally moist acidic soil. A bit wet, so planted in hills with a thick layer of pine needle mulch.
all spring they've been a bit yellow/orange which I decided was basic transplanting adjustment. A few weeks back I gave them a little rhodo/azalea food and pinch each of micronutrients and this peaty-clay soil is not rich and figured it wouldn't hurt.
Yesterday was the first day of heat of the season (really) and about 75% (30 or so) ended up with slightly upturned leaves. Were fine in the morning.
They looked drought stressed. Which i have seen previously when still potted. Yet the soil below mulch was moist. plenty of rain lately.