Alexis

Looks like S.x mitchelliana to me

Probably just a bit of sooty mold growing on the nectar. Nothing to worry about

Just looks like stress from being repotted and then being put back in the sun. The seller's idea of full sun might not be 10 full hours like you. The next pitchers will be fine. I wouldn't worry

Seems a shame considering they'll be in a greenhouse maybe next year. You'll be rewarded with bigger plants!

Looks tissue cultured. It'll be a bit difficult to divide yet because it'll be a mass of pitchers on a small piece of rhizome.

Rain, just because it's free.

Deionised water is perfect. Don't know where anyone has read anything otherwise.

All my plants are living outside while I prepare the ground for their new greenhouse. They're in the shade all morning just to try and keep transpiration low, so this year is a write off for colour (and storm Hugo flattened a few pitchers).

Looks pretty unhappy. What did you repot it in? Where is it growing?

Clover and Klassman are decent peats. Melcourt Growbark Pine if you want to go peat free (or try a peat/bark mix).

I didn't know that. Supermarkets fall over themselves to recall a product that doesn't have milk properly labelled, but companies can sell peat with hidden fertiliser in it and don't care.

Where is it living?

Darlingtonia needing cold roots is massively overhyped in my experience. Mine just live with my sarracenia in the greenhouse and do fine. Same with purp ssp. purp. Either will be about 5 weeks behind their greenhouse brethren if they live outside.

I think you've got your stratification and sowing instructions confused. 5 weeks wrapped in wet paper towel in the fridge, then sow on moss peat and keep warm and sunny.