Posted: 12/12/2013 at 08:33
Everlasting sweet peas Lathyrus latifolius are different from the more usual sweet peas - they are cottage garden plants and very hardy and perennial. You cut them down in the autumn and they will grow again next year. Sadly they don't have the marvellous scent of Lathyrus odoratus.
They are too warm and aren't getting enough light - they will do much better outside, but as they've been indoors so far they will need a bit of shelter out there until they harden off. Have you got a cold greenhouse or cold frame they can go in?
Pinching out the tips is a good idea.