Has this been growing in the house? These plants can slowly go in decline if they stay indoors and don't get enough light and heat.

Outdoors they are much more resistant to mites. I'd move the plant outdoors if your weather is warm enough, and spray off the leaves ocassionally. Keep it in a dappled sun spot though, no full sun or you will lose all the leaves. Where do you live, by the way?

Paradise, CA, I basically live in a forest. We've got deer and things which made me reluctant to put outside, more than that though is Oak Worms. They eat EVERYTHING. And grasshoppers. We have a lot of leaf-eating pests.

Anyone have any idea what the lows are for plumeria? Our temps can suddenly dip to the 40s at night, even if it's 90 degrees during the prior day

Try a nice jet stream from a garden hose. It works wonders. So far, none of the leaves on the plumeria were chopped off by the water. Worth giving it a try....

Hi, I'm far from being a pro at this but I live in the Bay Area and have the same temp drops sometimes. I was told to pull the plants in when temps drop to the low 40s but the nursery in Hawaii where I shipped one home from said to pull them in below the 50s! So far they have withstood a few low 40s nights but I don't have any flowers yet. Three of mine are rooted and 5 are cuttings I started in late June. I do have buds on one of the rooted plants, but because of the fog layer in the morning and not a whole lot of heat this summer (I'm assuming here) they are yet to bloom.

And the two I bought at a local nursery here have spider mites too. Wrinkled leaves and little webs, etc. I have sprayed them once and will spray them again a week later with a mild insecticidal soap (made for all kinds of plants including veggies). I have also been spraying them with water under the leaves, but it's no jet spray, just set on shower.

Hope this helps, someone more knowledgeable may come along and say something completely opposite, but this seems to be working so far anyway.

Good luck, Leslie