Posted: 26/09/2014 at 09:44
I would just like to add a little about those SP seed sowing pots.
The cost and types can vary quite widely. Those known as 'Root-Trainers' (the hinged opening type) can cost around £15 for 2 x 32 cells, although they can be used for several years if taken care of....the only problem I've had with these is to be able to keep them watered; they have such a small surface area.
Then there are 'Grow Tubes', these normally cost around £9 for 20 (although I happened to spot this today www.amazon.co.uk/Elixir-TUBES-EXTRA-SWEET-ONIONS/dp/B00IRCM2A4/ref=sr_1_3?s=outdoors&ie=UTF8&qid=1411720036&sr=1-3&keywords=grow+tubes) .....these are biodegradable and quite satisfactory.
The ones I use are the black polythene bag type sold by Eagle. These cost £6 per 100 and are generally intended to be used once.
Some will say that you can grow 6 or so seeds in a 5" pot, I've tried this and it to be less satisfactory because of root congestion.