celery

Looking at the size of my plants (from seeds sown late Feb and following my usual method) sowing now will give plants almost as big as they are going to end up! The only 'decent' sized plants I've seen on my site are ones that were either bought as plugs or are being grown in a polytunnel.

I think they'll struggle to get to any decent size now as they grow pretty slowly. They recommend sowing under glass to give them a long season to get going.