Foxglove illumination advice please!
Hi all, advice needed again I'm afraid! Ive got 6 foxglove illumination 'super plugs' that arrived about ten days ago. I've followed the instructions, planted them immediately in 9cm pots using John nines no 2. So I watered them a bit and left them on a sunny window ledge. They looked great at first but have proceeded to get really crispy leaves, with some blackening! I'm worried I'm killing them before I'm even get them in the garden. I was thinking of putting them outside, but the instructions say I shouldn't plant them until risk of frost has gone, so a wee while off yet. I've now put them in my porch, it's less sunny, and cooler. Any advice would be much appreciated. I don't have a greenhouse or cold frame unfortunately, so it's either inside the house, or out in the cold. Thanks!