how often do you water sweet potatoes?

michelelcJuly 16, 2012

We haven't had rain in about 2 wks. We aren't in a drought like many others, but it is dry. I am growing sweet potatoes for the second year. Last year we had more rain and I rarely watered. This year I am growing with black plastic for the first time. I am wondering how often I should be watering? Right now, I pour about half a watering can of water through the slit of each plant about once a week.

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wayne_5 zone 6a Central Indiana

While it is extra dry, they need more water. Also the temperature figures into things here. Plastic holds in moisture...for a while. Then it is drier under nonirrigated plastic...very dry. I hold the hose under the plastic hole where the plants are for about 10 seconds on each hole every 3 days or less.

Later when the roots are sizing up and nearer harvest, lighten up on water so as to not encourage fungal disease on the roots.

    Bookmark   July 16, 2012 at 7:21PM
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michelelc

Thanks Wayne! I will be out there tomorrow watering. I like your way of sticking the hose under the plastic instead of my way of filling a watering can 10 times, very tedious.

    Bookmark   July 16, 2012 at 9:13PM
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lonmower(zone8 Western Oregon)

I am growing sweet potatoes for the first time. Our weather, which features cool nights, makes this difficult. I am growing them under a small plastic tunnel which I close at night to preserve heat.

I have read the SP should be watered with warm water. The shock of cold water, even in a climate such as yours, will set them back. I am accomplishing this by watering from a long hose left in the sun.

My plants are well behind yours. They are just beginning to take off. Good luck to you...it looks like you have a fine patch!

    Bookmark   July 17, 2012 at 10:48AM
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wayne_5 zone 6a Central Indiana

My sweetpotatoes generally need set back then as they tend to get too big.

    Bookmark   July 17, 2012 at 3:14PM
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caosesvida(zone 7 del.)

I have not found much on the amount of water needed. like 1" every two weeks or 1" a week. Is there any guidelines , not finding it on the web. should you wait till they get a littly wilty looking? thanks for any help. They started looking a little limp but we did get some rain this week and now they look Ok. I want to put soaker hose down the row and give controlled watering. Thanks for any help

    Bookmark   July 22, 2012 at 11:04AM
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jolj(7b/8a)

I like wayne_5, watering plan.
But I watered my ST twice a week with the tomatoes.

    Bookmark   July 22, 2012 at 3:04PM
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edweather(Zone 5a/b Central NY)

I tend to think they don't need much water. I've grown them twice. This year I have a small patch, and they're growing under black landscape fabric. It's been hot and dry here too, but I haven't watered them much at all, and they haven't wilted and seem to be growing well as ever. Since I read this thread a few days ago, I gave them more water.....the warm water from the hose sitting in the sun. What's nice about the fabric is that the water soaks right through.

    Bookmark   July 22, 2012 at 10:15PM
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