Got the tomato plants growing really well - 4 varieties. Got the buckets from Morrisons. NOW, what's the best medium to plant them in? ordinary MPC, MPC mixed with something else (what?), maybe take out the contents of a growbag or even soil mixed with manure. I need billions of tomatoes for chilli dipping sauce, soups, passata etc and only have a small(ish) greenhouse. Over to you guys for the definitive recipe for success.

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