Heya boys and girls! Just some quick info: I have a grapefruit tree growing in my bedroom. It's all thorny and nasty...but the thing, I grew from a seed. So it's got a special place in my heart! Recently I've been hunting on how to make it bloom, because I'm all about blooms! They are soooo smelly like perfume I feel like I've died and entered a grapefruit bloom dreamworld in my sleep. Finding info, is really hard. I mean, impossible? So! I did my own studies. facts: 1) you only need one tree to make a fruit, but it has to be at least 7 years old. 2) it takes 12 months for said fruit to ripen and reach full size. 3) you can force it to bloom, whenever you want, after it is at least 7 years old. 4) clones impress your friends. I just found out all this info by growing a grapefruit in my house in zone 5.