I think that dreaming about something -literally- is an indication that something is preying on your mind a bit too much. Dreaming about 450 Anemone de Caen bulbs would be an indication that you need to stop procrastinating and plant the poor buggers.
I love anemones of all kinds (oceanic varieties included), seriously love them. I bought these bulbs around 18 months ago. I had a vision of sweeps of blue and white beauties in and around the roses. And then, not long after my bulbs arrived in the post, I lost them. Like, proper lost, turned the house upside down, couldn't imagine where they could have possibly gone. I started to wonder if I'd actually accidentally thrown them out. Then, about two months ago they miraculously turned up in the study. Bingo! Now I could plant them. Except where were they to go? The rose garden vision has changed, or rather, has filled up in the intervening year with other plants (mostly native, which these anemones are not). What to do, what to do? So, the bulbs have been sitting on the kitchen bench for weeks and weeks now, getting pushed aside, while I've been trying to decide what to do (short of listing them on eBay!). In my dream, some of them had flowers already...
So, in they go, and this afternoon at the latest. It's a bit late to be planting them to be honest, but better in the ground than stashed at the back of the laundry cupboard for another year. The plan now goes: whack them in, in random clumps, wherever there happens to be a space.