On 28 Feb, 17:45, Janet Galpin wrote:
I start Peer Gynt or any other early sprout in about the second week of
March and late sprouts in early April. I'm in South Lincs; in Manchester
you might need to go a week or so later.

I had indeed thought to do this around the new moon (19th March). I
didn't know there was 'late sprouts' too. Thanks Janet.