Welcome
@Plumeria_Newbie to the plumeria forum. Usually I have less issues with pests or spider mites when my plumerias are dormant. Since you are in SWFL even winter time you might still get warm weather so you can just spray the tips with water to blast the spider mites but don't let the pots get soggy wet.
I am in zone 9b so I keep my plumerias outdoor and the only time I get them covered is when we have below 40s forecast. You can check your zip code here for your zone:
purpleinopp said: If so, you can use that to look up your gardening zone on this site. You might already know that and just aren't interested in changing your display. Clicking this will take you right to your zone, if interested:
https://garden.org/nga/zipzone...