Even though the recommended sowing time on most herbaceous perrenial seeds is Feb-July would it still be safe to sow these seeds in a heated greenhouse as late as October.
The reason I ask is because i run 2 perennial nurserys both at different locations which are linked together. Unfortunately we are having to sell the nursery where all the propagation is done which means I will not have a greenhouse for quite a while and therefore nothing to sell. So I am hoping to sow the seeds in October (giving me at least 7 months plant supplies) and then when they developp a few true leaves I will move them to the other nursery and sell them from there, at the same time cleaning the other greenhouse out ready to move. I cant purchase them now as we currently dont have a budget!!! If I cant sow them in October what do I do?

Any help mostly appreciated. Many thanks in advance.

If you want nice looking perennials for the start of next spring you really need to be sowing now at the very latest. How much seed do you need? You can get seed of most common varietes from professional suppliers for a couple of euros a packet to do between 50-200 plants. Don't buy seed destined for private individuals unless it is rare - these packets usually don't contain much seed and are quite a bit more expensive!

Jelitto in germany have quite a good range and reasonable prices for professionals.