Posted: 27/02/2014 at 23:09
Yes. A wee bit too soon to sow. Nevertheless, all is not lost. Remove the lid or not, is up to you. From germination to more than half an inch high, causes me to worry.
Cosmos are among the fasted to germinate. Try and apply the basic principle with seedlings. 'As soon as they are large enough to handle' To me, that means. As soon as I can gently get hold of them, or better still. Soon after they develop their second pair of leaves, prick them out.
Now then. One might assume that simply moving a seedling fro A-B would have little or no effect. Sorry, I can't answer that one, but actually. The pricking out and transplanting does have a great effect. A simple test you can do. OK. Take a pot or tray of seedlings. Now then. Prick out a few. Keep them alomgside the basic seedlings. You will see that the seedlings continue to shoot up, and sadly as so many have learned. The seedlings soon become so leggy that, even when pricked out, many will wilt and die, others will not really come to anything. Now look at the pricked out seedling. For a while, it will appear to have come to a standstill. Then it picks up. If you are scientifically minded. Take a closer look at it's structure. The stem has thickened. The leaves are so much more thicker and stronger. I rest my case.