In order to harvest BUDS, your plant will need be watered with the HKWATER token which obtained in two different ways:
WATER TOWERS are an NFT with limited supply and initially 19000 towers were minted. Water Tower NFTs produce HKWATER daily which can be used on your own farms or sold to other players.
Water Towers are now sold out and cannot be purchased from Hashkings directly. Instead, users can purchase them on NFTMART from other players. Each initial water tower began at level 1 and can be leveled up to level 10 with each upgrade requiring a certain amount of XP as described above and a cost of 1 dollar.
After watering your plant using HKWATER and signing the transaction in Hive Keychain if you have waited for the sprouting time to pass the HARVEST button will appear.