A couple of days ago, I planted out my sweetcorn. I had sown half of them in toilet roll tubes and the other half in a seed tray. (see here and here) It's been 3 weeks from sowing to planting out.
The ones in the toilet rolls have done much better, and their roots were coming out of the bottom. It was also much easier to plant these ones, so I definitely need to remember to do that again next year. I have ended up with 14 plants, so I've put them in a 3 x 5 block (with a corner missing)