Stunted growth and the crispy leaves tell me that you have ph issues and prolly burned them too. Thats not normal wilt death from flower.

the leaves look like that from 1 or more of these:\

needing flush and have ammonia/salt toxicnessessess.

Too much N in your fert leading to the downfall of K.

PH way out of zone causing lockout.

too hot of a medium.



Personally, I would just flush those till the bitter end and say lesson learned.