Ask a Question forum: Cold tolerance of sweet peas (Lathyrus odoratus)

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Name: Helen
State College Pennsylvania (Zone 6b)
habusaru
Mar 16, 2018 11:16 AM CST
Hi,

I have a new gardener question. I'm growing sweet peas in the USA for the first time and was wondering about the cold tolerance of seedlings. I'm in State College, PA zone 6b.

My sweet peas have germinated well and they now have about 2 sets of full leaves each (see attached). However, the light in my house isn't great and they're a little leggy. The forecast for the next week is about 35F/5C during the day and about 23-28F/-7to-3C at night and there's a little snow on the ground (Last frost date is ~April 20th). I also have a mini 2x1x6ft unheated greenhouse.

I would love your advice on when to plant them out. I know that in the UK sweet-peas overwinter well and can deal with the odd frost, but as this is the first year I have good germination, I don't want to kill my seedlings by accident. Do I plant them now? Put them outside in the greenhouse now? Wait a few more weeks? Am I caring too much? ;)

Separately, many of my other seeds say to plant "as soon as the ground can be worked". Does that mean now, or is it closer to last frost date? [We haven't had much rain or snow this year so everything is reasonably dry, but pretty cold. I can fork the soil, but the daffodils have only just started to sprout]

Many thanks
Helen


Thumb of 2018-03-16/habusaru/b3f018
Thumb of 2018-03-16/habusaru/2e8852

Name: Philip Becker
Fresno California (Zone 8a)
Image
Philipwonel
Mar 16, 2018 7:09 PM CST
Yikes !!! Helen 😮 !!! Very, leggy !!!
I'm not sure if they'll make it ?
Give em as much lite as possible, outside in greenhouse, but !!! , introduce them slowly to direct sunlite.

You can winter sow everything. By, planting seeds now ! The seeds have there own built in clock ! They will sprout, when the time is right for them, to sprout !👍😀 You just, 😟 ! have to remember !!! ERR ?🤔??? Where you planted them.?🤔???😮😮😮 That's, the Scarry part.

Best, to ya 👍.
😎😎😎


Anything i say, could be misrepresented, or wrong.

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