When is the accepted age/size to harden off seedlings? I have a few Nepenthes seedlings that are over an inch and about a year old (some 8 months old, still an inch) and I'm worried that the high humidity and standing water in the terrarium combined with the crud growing in there will give them root rot.
Are there steps to hardening off seedlings? Are there things I should avoid, like repotting during the process? Or should I repot? Is there a big risk of death during this process?