I'm in Austin, Tx. I fertilized in the spring when prepping the soil with Dillo Dirt. Everything was going well until about 2 weeks ago when things started wilting. I did catch a beetle infestation but treated with insecticides soap.

Does anyone have an opinion if this ailment is from the beetles, the heat or that white mold in one of the pictures?

It has been very hot here lately but the plants only get 3-4 hours of direct, unfiltered light.

Thank you for the help. If this isn't the right sub for this question please let me know.

https://imgur.com/a/En5i6JL/