I did too, but that was last year, and now mine are a lot bigger, and suffering a bit, as I discussed in this blog post.
So if you are wondering when is the right time to plant them, I think the answer might be now.
Normally I'd have said wait a bit. Still lots of the summer to go, and it can be hot and dry for a good couple of months more.
But this year? It's not looking at all like being consistently hot and dry. If it does stay cool-ish and moist-ish the trees will love it - so much time to put down roots before next summer.
And the bees have packed up shop mostly, and I'd say they know a thing or 2 about the weather. Just don't quote me to the weather department.
If you haven't started on your seeds yet, and would like to know how, check out this free Pictorial Guide to Growing Manuka from Seeds.
And if you'd like to know where to plant your trees, Module 3: Choosing your Forestry Spot will tell you what you need to know.