Posted: 28/03/2015 at 19:55
Yes, 5 litre pots is sensible if you don't want to plant into the open ground.
soil? John Innes number 3. I would not add any additional draInage.....the warmer weather is almost here and compost is unlikely to get over wet now.
why can't you plant out into the open ground now JH? 60 cm plus is good height to plant out.