Issue description
When you mouse over either of the greenhouses in the menu, you are given a preview of all the recipes they provide. While I don't own the supporter edition, I can still view that the greenhouses can grow flowers in that preview UI. If I build the greenhouse, the flowers are not available.
Reproduction steps
View menu recipe preview for greenhouses.
Game version and build number
v0.6.3 b333
Operating system
Windows
