The Mammoth Improved Onions are the first to show (after 8 days) and germination rate was 80%. Mammoth Red Onions are a little later (after 11 days) and germination rate was slightly lower, 75%. I think the fast germination and lower germination rates are caused by my seeds being on the bedroom windowsill rather than the constant, controlled 12 C recommended. Robinsons recommend potting off the seedlings into a slightly stronger JI compost at the crook stage. Since my seedlings are already in quite roomy 9 berth modules, I decide to leave them alone.

Onion seedlings