I hope my colocasia get that big! I bought a root of Borneo Giant and it's growing in a pot in the office...just a tiny thing now, but fingers crossed.
RE: Pruning holly. I wouldn't dare...they grow so slowly up here...I've got one that's probably 15 years old and it has only just now reached about shoulder height. Pruning isn't something to be afraid of...it's been my experience that with shrubs, you can't really kill them unless you prune them really drastically in the heat of summer. In that case, the best thing would be to cut them right down to the ground instead and let them "regenerate". A shrub that's dying you can kill, but it would have gone on to join the choir invisible anyways *grin*.
