Tropicals & Tender Perennials: A couple of unusual problems, 1 by Calalily

Calalily wrote:
I had not worked on this side of the yard for a week or so and went out this morning to see if anything needed watered. I noticed some white stuff on the leaves of a brug and when I looked close I noticed that it is powdery mildew. We have heavy dew at night and the mornings are always foggy plus the nights are in the mid 70's, perfect conditions for mildew!
This plant is also in the hottest corner of the garden, gets stressed for water quite often and is in a far corner so I don't go there as often.