Except for a few apono's and some, not all mosses, moist olants are fine at 84-85F, you do not need higher than this.
My tanks go over times every year, since I do not use AC and it's CA. 100F plus day after day sometimes.
All plants do fine.
The real issue is that at higher temps, there's less CO2, less O2 and all dissolved gas.
So make sure to add a bit more circulation when it gets warmer, and more CO2 to account for the high circulation rates.
Also, plants, bacteria etc all grow faster at warmer temps, say 25C t 35C, you will get nearly 2x faster growth, which also drains the already lower O2 levels.
Discus do fine at 82-84F. I keep and suggest most folks target those levels for planted tanks where breeding is not the primary goal/focus.
The list of plants that do well, better at low temp is much smaller, most plants do pretty well at the higher temps though, better than most fish.