Twilkes writes:

Hi there,

I've been doing some googling and not really come across what I'm
looking for, so hoping some folk here can point me in the right
direction. I've grown a tomato plant before, and a couple of catci, but
that's about it.

I'm looking for a houseplant I can grow from seed, that is fairly quick
growing, and will also grow fairly big over the years. I've read that
cultivating from seed can be difficult, so also any plant that I could
buy when it is young and look after in the same way.

I was in a shared flat a few years ago, and there was a mini-jungle in
the corner of one of the rooms, probably a number of plants of the same
kind, reaching around 6ft, all in the same big pot. I have no idea what
it was, or how old it might have been, but that's the kind of effect I'm
going for - big and green.

Lots of people save the seed from Avocado and grow it.
It can be started in a glass of water.