Daylilies forum→When is it safe to harden off seedlings?

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Name: Pat
McLean, VA (Zone 7a)
Feb 24, 2018 7:54 AM CST
I've gone and planted far too many seeds and a large percentage of them germinated so I'm running out of room to keep them under lights inside.

I'm in zone 6b and the weather forecast calls for as low as 32 degrees in 8 days then as low as 27 two nights in the following week. Otherwise the temps will be above freezing.

I have a glassed in back porch where I usually begin hardening them off, but never this early. Does any know for sure if these young seedlings will survive putting out right now? I'm not on the AHS Robin because I kept getting kicked off when my e-mail server gave me problems and kept rejecting their mail so if anyone is on there, would you be kind enough to ask this question for me?

Thanks - Pat
Name: Ken
East S.F. Bay Area (Zone 9a)
Region: California
Feb 24, 2018 8:56 AM CST
I can't think of any reason those temperatures would be a problem for a daylily seedling, especially since they'll be inside the porch. Think of it as a large cold frame. If anything, they'll miss being under the lights. If it's on a concrete slab, all the better, since the concrete is a huge heat sink. There are a lot of succulents which would survive those conditions.
Name: Larry
Enterprise, Al. 36330 (Zone 8b)
Composter Daylilies Garden Photography Million Pollinator Garden Challenge Garden Ideas: Master Level Plant Identifier
Celebrating Gardening: 2015 Region: Alabama
Feb 24, 2018 11:28 AM CST
I agree with Ken!

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