Posted: 09/04/2016 at 16:01
Circus, we've all done exactly the same at some point. Too much sown or too much purchased, an every day occurrence. You've potted from plugs into 9 cm pots, it'll take a good while before the plugs roots fill a 9 cm pot, it's then you might think about panicking. There's no rush to pot on, do it when the plants need it, not on a scheduled basis. Pots are relatively cheap and you can get them almost anywhere, and although it's a bit cool right now in a few weeks it'll be warmer and many can go outside. You may find some of the plugs will be big enough to plant, but others won't.
As sergeant Wilson used to say 'Don't panic'. You may not make the same mistake again, on the other hand, your enthusiasm may.