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temperature for starting seeds

Posted by zackey GA 8b (My Page) on
Mon, Jan 16, 12 at 16:26

I want to start my tomato and my marigold seeds now. I have very little room anywhere to start them. I have an 8 foot x 8 foot greenhouse crammed full of plants and cuttings. I might be able to squeak some in somewhere. We only run the heat in there to keep it from freezing. We have had an exceptionally mild winter here. Or I could squeeze some in the house somewhere, but the window with the most room in front of it is north facing. We keep our house cool. It can be anywhere from 50 degrees for a low to about an average of 68 in the day.


Follow-Up Postings:

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RE: temperature for starting seeds

Germination: soil temp - 75 which is why a heat mat works best and air temp isn't relevant.

Growing on: air temp 60-65 and no soil heat.

Dave


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RE: temperature for starting seeds

You emailed me about heat mats. I linked lots of discussions about them for you below. Walmart sells them here. So does Lowes and Home Depot once they have their seed starting supplies out. Otherwise many models are available online in a wide range of prices. Most all the seed companies sell one as do any of the sites that sell seed starting supplies. But shop around because the prices vary widely.

Dave

Here is a link that might be useful: Propagation heat mat discussions


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RE: temperature for starting seeds

That sound ideal. I kinda doubt anyone around here does that. I guess I will have to try some inside the house and some in the GH and see what happens.


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RE: temperature for starting seeds

Thanks digdirt for that link which should answer any questions about heat mats. I did an experiment recently with my pots on a heat mat. With overnight air temperatures dropping into the mid 40 degree range, I took the soil temperature of four inch and one gallon pots to see the soil temperature with the heat mat at 70 degrees. In every test the soil temperature was within 2 or 3 degrees of 70 degrees. Al


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RE: temperature for starting seeds

Thanks Al. Yeah even in the GH we have to use heat mats for germination.

Dave


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