Reported requirements
According to the earliest complete community guide, the greenhouse becomes available after reaching about 80% museum completion, then paying Ridge 50,000 to build it.
- Museum progress: donate crops, fish, critters, and artifacts steadily from your first week.
- Savings: 50,000 is a large sum early on — high-value crops like Pumpkin, Drikker, and Sweet Wicca help.
Verification status
These numbers come from a single detailed community source and have not yet been cross-confirmed by the official wiki. Treat the exact percentage and price as provisional; the direction (museum progress + a Ridge construction fee) is consistently reported.