Yes, "regular" Limelight can get around 8' by 8' (and more) so, if growing a hedge, be ready to prune to control and shape often in Spring. It produces blooms on new wood so prune now and post pictures later, in June-ish? I do not have the space for it or a hedge but, I admit, I once considered a hedge of Little Limes a few years ago. Ha!

I use 2 limelights as part of focal points for a perennial garden. So I prune hard for the last couple years to keep the size reasonable.(under 4-5 ft). They are very hardy and reliable. I typically hard prune them to ~ 18-24 inch tall sometime late March or early April. They will grow back in no time;

Wow I'm jealous! Hope mine in Texas grows nice and big ðÂÂÂ

Any paniculata bought in a pot smaller than 3-gallon will take quite a while to get that large. So buy big or replace with big.

But it's quite acceptable to shape and hard prune them in early Spring. No harm done.

Once established, Limelights can grow 5' branches in a single season. I've double-pruned in the spring, especially when trying to promote branching...pruned normally the first time, then pinched back new growth once it got to a couple sets of side shoots.