Brugmansia Leaf Spots: Oil & Copper Fungicide Protocol

Sick Brug Original: Brug growing nicely (no flowers yet), bottom leaves develop light brown stuff. Tampa, warming weather—all plants have issues. Horticultural oil on plumeria worked—thanks!

Follow-up 1: Hard to tell if scale or fungal—hit with oil, then copper fungicide a week later. No harm either way.

Follow-up 2: Wash oil off next morning?

Expert Advice

Yes, apply late afternoon, work overnight, wash residual oil next morning with dead insects. Prevents heat magnification damage from sun on oil.