Sowing more flower seeds

With my propagators working well, the tomatoes, chillis and peppers were ready to get moved onto the heated bench in the large poly tunnel. The freed up some space so naturally I had to sow some more seeds. These things just have to be done. I am in the planning stage for building a bee friendly garden this year to give the hives some extra forage which naturally means I will need more plants. So today I sowed: Nepeta Cataria (True Catmint), Centaurea Scabiosa black top, Aster alpinus albus (white beauty), Perivskia atriplicfolia Blue Steal (Russian Sage) and Dahlia (showpiece double mix). I have also popped some Eryngium Caeruleum (Sea holly) in the fridge to cold stratify. I am pretty sure that last time I grew Eryngiums, which still give me a lovely show every year, I didn’t cold stratify them but that’s what the packet says so who am I to argue. And I still have a whole load of seeds stashed away for my next propagator free space. I wonder how long it will take me to fill up the small tunnel as my little babies grow.