At what temperature should I cover them, and with what? I've heard you can kill them with plastic, or letting sheets touch them?
I saayyy, go to a doctorYou might also consider going back to your old diet and see if it's diet change that caused itIf it is, then go to a nutritionist and they'll help you diet without these kinds of things happeningMy friend also has this problem, but it's because she doesn't hydrate enoughSo you might also want to start drinking a lot of water.
You should definitely see the doctor if this has been going on for weeks, but first you need to empty your bowels of doodooOnly one way to accomplish that.take an enema! A Fleet is ok but I really recommend a proper one (e.g a about a litre of water-tinged-with-glycerine, injected with the nozzle-and-bulb).
drink eight glasses of water a day get plenty of exercise and eat some all bran, brown breadkeep up the good work and try to take it easy.
Both plants are very hardy to average spring temperature fluctuationsUnless you have had an unseaonably warm spell this winter, which tricked the plants into setting buds early, you should be fineJust a few side notes: Remember snow is an insulator, yes very odd I know, but it is If you are expecting a hard frost and you have plants that have already bloomed, the best thing to do is to to water heavilyIn the morning water again to remove the frostIt takes longer for water to freeze and thereby protecting the plantsIF you really want to cover the plants, you need to purchase frost blankets, specifically designed to insulate plants GOOD LUCK!!