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Name: Cindy
Hobart, IN zone 5
aka CindyMzone5
Celebrating Gardening: 2015 Plant Identifier
Shadegardener
Jul 15, 2015 9:19 AM CST
I'd like to try broccoli raab as a fall crop. Have never grown it before. I'm getting ready to sow some seed for transplants in Aug. I've read that if it can be wintered over, it develops a sweeter flavor. What's the lowest temp the plants can take? I'm not adverse to freezing it if I get lucky with a nice little harvest.
Name: Dillard Haley
Augusta Georgia (Zone 8a)
Garden Ideas: Master Level Avid Green Pages Reviewer Celebrating Gardening: 2015
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farmerdill
Jul 16, 2015 11:38 AM CST
Since no one else has tried, I will attempt. Broccoli raab is basicly a non bulbing turnips with an extra large flower stalk. I have not attempted to test the cold temp of raab limits but both turnips and regular broccoli succumb at about 22 degrees Fahrenheit.
Name: Rita
North Shore, Long Island, NY
Zone 6B
Charter ATP Member Seed Starter Tomato Heads I was one of the first 300 contributors to the plant database! Vegetable Grower Lover of wildlife (Raccoon badge)
Birds Garden Ideas: Master Level Butterflies Celebrating Gardening: 2015 Roses Hummingbirder
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Newyorkrita
Jul 16, 2015 11:55 AM CST
Yes I was thinking myself that in zone 5 nothing annual is going to overwinter.
Name: Cindy
Hobart, IN zone 5
aka CindyMzone5
Celebrating Gardening: 2015 Plant Identifier
Shadegardener
Jul 16, 2015 4:57 PM CST
Thanks for your input! I knew it wouldn't survive my winter out in the open but was wondering what its limits were. I do have a tall cold frame that DH constructed last year. It's pretty air tight and has twin wall poly panels in it. I put rigid styrofoam along the sides and put large rocks in it to hold some heat. He also found a handy plug with a built-in thermostat that will turn on the power to a 60-watt light bulb when a preset low temp is reached (22 degrees). It will turn off the power when an high temp of approx 34 degrees is reached. A little computer fan keeps the air circulating. I can also pile on rigid styrofoam on the top covered with a blanket to trap more heat. It did keep potted kale viable (although not growing) all winter. Since I grow most of my produce in pots, I was thinking of stashing some of the more cold-tolerant stuff in the cold frame. Growing through to New Year's might be doable.
Name: Cindy
Hobart, IN zone 5
aka CindyMzone5
Celebrating Gardening: 2015 Plant Identifier
Shadegardener
Jul 17, 2015 4:01 PM CST
Ach! Sowed the seed and left the cell packs in the little GH. Of course, they've already sprouted (in 2 days) but felt that they shouldn't remain in a 100+ degree GH (with 2 fans running, shade cloth, open door and 3 open vents). I've moved them indoors into a partially sunny window to keep them cool until next week when the daytime temps will only be in the 80's. Next will be some kale.
Name: Cindy
Hobart, IN zone 5
aka CindyMzone5
Celebrating Gardening: 2015 Plant Identifier
Shadegardener
Jul 27, 2015 8:23 AM CST
My seedlings are pretty leggy. Between trying to keep them cool and getting them enough sunlight, they've gotten pretty lanky. Can the seedlings be planted deeper than they grew in the cell packs? I know some things can and some things can't. TIA
Name: Rita
North Shore, Long Island, NY
Zone 6B
Charter ATP Member Seed Starter Tomato Heads I was one of the first 300 contributors to the plant database! Vegetable Grower Lover of wildlife (Raccoon badge)
Birds Garden Ideas: Master Level Butterflies Celebrating Gardening: 2015 Roses Hummingbirder
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Newyorkrita
Jul 27, 2015 1:47 PM CST
I think they can as I have done that with leggy Broccoli seedlings.
Name: Cindy
Hobart, IN zone 5
aka CindyMzone5
Celebrating Gardening: 2015 Plant Identifier
Shadegardener
Jul 27, 2015 1:54 PM CST
Thanks, Rita. They're getting their true leaves and I need to thin them in the cell packs but I want to make sure I leave the shorter ones for planting. They sprouted in two days and left me totally surprised and unprepared. This past week, either they bake in the sun where it's hot or they come indoors where it's cool. No happy medium this time of year.

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