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I saw a post on here recently about onions grown from seed bolting if they get too warm, and I'd like to avoid that if possible! Thanks in advance for any advice - this is my first attempt at onions from seed (grown sets in the past) and I'm a bit nervous of getting it wrong!
My first lot were sown two weeks ago and have been on open shelving (no propagator lid) in my conservatory, which is south-facing, double-glazed and frost-free but only partially heated - there's a small radiator in the corner nearest the house, which is on during the day and evening, plus whatever warm air leaks in from the living room (we keep the inner door shut in cold weather to keep the heating bills down!).
My plan was to put them out as soon as they have germinated and are showing above the vermiculite, but if we have a mild spell it could get quite warm in the conservatory - would it be better to harden them off now and grow them in a fleece-covered mini-greenhouse on the patio?
My first lot were sown two weeks ago and have been on open shelving (no propagator lid) in my conservatory, which is south-facing, double-glazed and frost-free but only partially heated - there's a small radiator in the corner nearest the house, which is on during the day and evening, plus whatever warm air leaks in from the living room (we keep the inner door shut in cold weather to keep the heating bills down!).
My plan was to put them out as soon as they have germinated and are showing above the vermiculite, but if we have a mild spell it could get quite warm in the conservatory - would it be better to harden them off now and grow them in a fleece-covered mini-greenhouse on the patio?
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