
The leaves on my plumeria keep turning yellow and falling off.
It’s been pretty hot and humid. I’ve been watering it every day that it doesn’t rain. A month ago I gave it 2 tbsp of epsom salt in 1 gallon of water and did that again a couple of days ago. I also gave it Excalibur fertilizer at the beginning of the season. The soil is all cactus soil with some lava rock at the bottom of the pot for drainage and a thin layer of pine bark mulch on top. It’s getting a lot of sun where it’s sitting. Any idea what’s going on?