This is a situation that has long irritated me. Be aware that the same applies to seedlings and plugs you can buy at garden centres or online. They will die if exposed to low temperatures because they are tender, not hardy. I have never observed a warning about this and it really should be given.
I 'knew' they were tender, I suppose, but just didn't realise how little protection the bubble wrap would give them inside a greenhouse. I've seen lots of advice written in the magazine and on TV shows about putting things in a greenhouse for protection, suggesting that would be enough. I guess the people that write that probably have a heated greenhouse and don't realise us plebs are slumming it with a knackered, unheated, old aluminium thing they got for free when an old lady wanted shot of it!
@Posy we must be lucky round here then, I know of 2 or 3 gc that put up warning signs saying " these plants are tender, and must be protected until the danger of frost is past." or words to that effect. @Thankthecat don't be too hard on yourself, most of us have done a similar thing at one time or another.
@Thankthecat don't be too hard on yourself, most of us have done a similar thing at one time or another.
Thank you, I'm getting over it! And will be buying some more seeds to sow again. I do still wonder why whoever put that bit in the magazine didn't say, "Don't sow them now unless you've got somewhere heated to keep them." But I'll know better in future!
I usually sow my cosmos seeds in pots outside in late spring. I did them earlier inside last year. It didn't make any noticeable difference. If anything, the outside ones have a better root structure.
Cosmos grow so fast when it's warm that I too findno noticeable difference to ones planted early. It is disappointing that a magazine wouldn't go into more detail about timings.
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@Thankthecat don't be too hard on yourself, most of us have done a similar thing at one time or another.