That's the reason I only grow one plant, lack of space, think the inside of my cab is around 1.2m (w) x 1.0 (d) x 1.75 (h), gets a bit tight just before harvest time as I usually have one that's just started flowering and a seedling on the go. Like now, Widowbomb has 3 weeks or so left, Bubblegummer has been in flower a week and I popped a Bubba 76 last night.........freebie from Attitude.
I dream of converting the loft but it took me 5 years to convince the Mrs to let me grow in the shed! Damn women lol
Once Im more confident with growing I'm planning on lollipopping around 6 at a time, I only started out in June of last year so Im still a newbie