Posted: 23/06/2016 at 15:00
Hesperis live two to three years. They produce lots of seed which you can scatter around if you can recognise seedlings and are not a hoe fiend. Perfectly hardy.
I usually sow a few in a tray, prick out into small pots then put in gaps in September. I have never tried eating either, although I believe you can eat wallflower flowers.