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Sweet potato slip - Time between start and putting them in the ground  RSS feed

 
Mike Jay
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Location: Northern WI (zone 4)
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Hello permies!  I'm going to grow sweet potato slips this year.  Yay!   

I'm going to do the "toothpick and tater in a jar method" or the "tater on its side in a pan of water method".  How much time should I plan on from when I put them in the water until I plant the rooted slips in the ground?  I've heard a month to let the slips form on the potatoes and then a few weeks to let the roots develop on the slips in a jar of water.  So I'm guessing 7 weeks but I haven't seen is explicitly stated anywhere.

Also, if you put them in a jar, which end goes down?  I'd assume the side that was closest to the mother plant goes up but I saw one youtube video where they said to do it the opposite way.

Thanks!
 
Judith Browning
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Location: Arkansas Ozarks zone 7 alluvial,black,deep loam/clay with few rocks, wonderful creek bottom!
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I was just getting ready to post that I'd started my slips too early (mid february) and have to figure out some way to pot them until planting time...here it is still a few weeks off.  I don't want them sitting in water to root for that long.

I've always laid  them lengthwise in water (halfway up the sw. potato) in my odds and ends of old crockery with good success.  For some reason this year I also did some in wide mouth quarts with toothpicks and they are sprouting about the same as the others but only from one end, of course.

I've never worried about which end was up...usually my potatoes from last years crop start sprouting from one end or the other and that's when I get them out to start slips.

This year was early though, I think because our house is warmer and the sweet potatoes in storage began to sprout too soon.

I think six weeks is about right.  I am pretty sure that rooting the slips doesn't take more than a week or so...much quicker than growing out the sprout itself.

Do you know what variety you have?  Mine are a cut leaf kind that was given to me more than 15 years ago.  I keep thinking they will play out and not produce as good but so far they have made wonderful large roots...and delicious

EDIT to add....there might be something helpful in my sweet potato thread here

good luck!
 
Mike Jay
Posts: 534
Location: Northern WI (zone 4)
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Thanks Judith!  I am a bit too early then.  My average frost free date is May 21 so it looks like I should start getting the roots wet about Apr 1.  If it takes them a bit longer it's fine since we don't get really warm here in early June anyways.

I don't know the variety but if I had to guess I'd say Beauregard. 
 
Jason Bijl
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Location: Kamloops, BC - Zone 6
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this year I started mine in a regular seed tray half filled with soil.  the Potatoes are all resting on their side and the soil is now a mat of roots.  I then took the slips and placed them in 6 pack cells.  I hope to keep them happy for the next month, because I started these things super early.
 
Mike Jay
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Did you keep the soil in the tray really wet?  Or just "normal"?  I saw a youtube video by imstillworkin where she put the roots on their sides in a pan and once the slips were ready she pulled them off and used the same tray of water to set them in to root.  So she'd just pick more slips off every few days and get them going in the corner of the same pan. 
 
Jason Bijl
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Location: Kamloops, BC - Zone 6
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I just picked them off as they grew.
They had 300w MH light and bottom heat, with regular watering.
14895958065872098298167.jpg
[Thumbnail for 14895958065872098298167.jpg]
 
Mike Jay
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Location: Northern WI (zone 4)
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Thanks!  Nice photo
 
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