Seedlings in greenhouse.

sunshine
New Member

Posts: 17

Seedlings in greenhouse. Feb 21, 2015 14:48:32 GMT

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Post by sunshine on Feb 21, 2015 14:48:32 GMT

Hello,
I have flower seedlings growing in my greenhouse in a heated dome. Marigolds, pansies, petunias, lobelia and alysum. The Alysum seedlings are tall, weak, falling over and dying while the lobelia seems to be on pause. I wonder do I need to install lights over them even though the greenhouse gets daylight on all sides. Also when can I take them off the heat, My greenhouse read 3.5oC last night. I would really appreciate all the advice I can get.

daitheplant Top Member Posts: 6,385	Seedlings in greenhouse. Feb 21, 2015 19:57:47 GMT Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by daitheplant on Feb 21, 2015 19:57:47 GMT Turn the heat off and remove the dome, in the evening replace the dome but leave the heat off. Welcome to the site, by the way.

sunshine New Member Posts: 17	Seedlings in greenhouse. Feb 22, 2015 16:08:10 GMT Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by sunshine on Feb 22, 2015 16:08:10 GMT Hello I just see you reply. This morning I removed the dome and reduced the bottom heat. Thank you for the welcome.
	Last Edit: Feb 22, 2015 16:08:49 GMT by sunshine

Rosie Global Moderator Rambling Rosie. Posts: 9,407	Seedlings in greenhouse. Feb 22, 2015 19:39:52 GMT Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Rosie on Feb 22, 2015 19:39:52 GMT Too much heat will make the seedlings grow too fast, also not enough like can make them grow lanky. Welcome from me too sunshine
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roofgardener
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PLanting Chillis

Posts: 2,378

Seedlings in greenhouse. Feb 23, 2015 9:05:26 GMT Moonlight likes this

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Post by roofgardener on Feb 23, 2015 9:05:26 GMT

Hi there Sunshine, and welcome. I'm a greenhouse gardener as well. I think I've suffered in the past from what you are experiencing (though with different plant types).

I suspect that SOME plant types get 'overcooked' in a greenhouse, even without electric heating, and "bolt". Others seem to need it. Why is gardening so complicated ?

I just stuff soil in a pot, plonk the seed in, water it, then hit it with a stick.
If it doesn't germinate, or if it bolts, try using a bigger stick ?

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Post by sunshine on Feb 21, 2015 14:48:32 GMT

Post by daitheplant on Feb 21, 2015 19:57:47 GMT

Post by sunshine on Feb 22, 2015 16:08:10 GMT

Post by Rosie on Feb 22, 2015 19:39:52 GMT

Post by roofgardener on Feb 23, 2015 9:05:26 GMT

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