When to plant Lilly of the Valley

I have just bought some Lilly of the Valley there were five in the pack.I have now put them in separate pots and they are in a unheated greenhouse.When is right to plant them out.

 

Hiya Paul
Plant them out in May or after.
(Lily of the Valley is worth a fortune down here....or at least it was a couple of years back. The famous Flora Day in Helston Cornwall relies on lots of these but two years back, for some reason, there was a shortage for the occasion)

 

Hi there @Verdun, how are you?

Please can you tell me if now is the time to move them.....my Dad has loads so I want to add some to bulk up my dismal collection.

 

Hello Upsy.....I'm fine. Hope you are too . Keeping out of mischief I hope!!
I would wait a while longer......until soil is a little warmer and they should settle well.

 

OK that's great thanks @Verdun

Doing my best to keep out of trouble