Posted: 06/07/2014 at 15:00
Get them outside now electricjo, in a semi shaded position, give it 2 weeks they will be twice as big by then and then give them a weak feed every 2 weeks. Compost will only support a new plant for about a month, by then they have used up any added nutrients. You'll need to repot to a 9cm pot to carry them through till planting out. Best time to plant all of them is September in their flowering position. By that time they will have a good strong root system and next year you'll have a good show. I wouldn't let them flower this year, cut off any flowering stems, it may seem harsh, but the root system will be better for it. When planting in September add Fish blood and bone to the planting hole. Be patient with them, it's worth the wait.