Daylilies forum: Zone 5b Iowa...Seedlings growing so fast...what to do til fall?

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(Zone 5b)
Jun 20, 2018 3:21 PM CST
I started seeds that are now plants 6 inches tall in my living room in biodomes and I would love feedback on how to keep them growing well until fall. It sounds like planting them in Iowa summer isn't ideal so now I'm trying to figure out what I'm going to do with them for another 3 months. They are in 8 oz cups with holes in the bottom for watering. Growing like crazy in a north facing window.

Am I going to have to put them in bigger cups/pots before planting them outside in early September? Do they need grow lights if they are doing well now?

Thumb of 2018-06-20/dragonflyvalley/860bbf

Name: Ken
East S.F. Bay Area (Zone 9a)
Region: California
Jun 20, 2018 10:05 PM CST
I can't imagine planting small, indoor-grown seedlings in the fall in Iowa,

What did you hear that makes you not want to plant them outside now?
Name: Rob Laffin
Mariaville, Maine (Zone 4b)
Jun 21, 2018 10:42 AM CST
In my experience, there is a limited amount of time that sdlgs will tolerate being in cups before they start to lose vigor. Once they're up and running, they need to be in the ground. I would plant them and provide some sort of .light temp shade if your heat/sun are too intense right now, so they don't roast, and plenty of water. You want them to be well-established in place before their first Iowa winter. I have had to move first year seedlings in Sept and the winter was much harder on them than on those that had been growing in place all summer.
Name: Diana
Lincoln, NE (Zone 5b)
Daylilies Region: Nebraska Organic Gardener Dog Lover Bookworm
Jun 21, 2018 10:48 AM CST
dragonflyvalley, welcome : )
And go ahead and put them outside in some kind of partial shade so they can get used to actual sunshine. Move them into full sun gradually, and then get them into the ground. Water well, mulch and they should be okay.
I kept seedlings outside in pots till fall and then put them in the ground about 6 weeks before frost. I transplanted the whole rootball so the roots were undisturbed. They came back this year and one bloomed (still trying to find time to post pictures...)

I am in the same zone as you...
Bravery is not being unafraid. Bravery is being afraid and living life anyways.

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