Sweet Potato Plants

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  1. How Do I Know When to Harvest a Sweet Potato?
  2. Sweet Potato Planting
  3. Raising Sweet Potato Plants
  4. Best Companion Plant for Sweet Potatoes
  5. Sweet Potato Yield
  6. Growing Sweet Potatoes (Northern)
  7. How Much Water?
Asked by Turnpike30 on November 19, 2010
How Do I Know When to Harvest a Sweet Potato?

The plant has green and white leaves. I don’t know whether I should just pull on it or what?

ANSWERS
Nikki
Certified GKH Gardening Expert

Tubers normally do not form until later in the season when the plant begins to prepare for winter. Allow them to keep growing. On average, it takes about 95 to 120 days after transplanting the slips to have mature sweet potatoes. The leaves on the plants will begin turning yellow and dying off when they are ready for harvesting.

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Asked by Anonymous on April 25, 2011
Sweet Potato Planting

We have slipsĀ and are in Zone 5. Are slips planted separately in hills, when should they be planted, and how long to harvest? What about storage? Are there any companion plants or plants that should not be close by them? How about special fertilizer?

ANSWERS
Nikki
Certified GKH Gardening Expert

This article should help you: https://www.gardeningknowhow.com/edible/vegetables/sweet-potato/grow-sweet-potatoes.htm

Sweet potatoes do not require any fertilizer to grow vigorously. Adding some compost or rotted manure to the soil when planting should be enough to jump start these plants.

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Asked by carolynb on April 28, 2011
Raising Sweet Potato Plants

After putting potatoes under sand and sawdust, our potatoes are rotting in the ground in just a few weeks. We have been raising and selling plants for over 40 years and have not had any problems until the last 4 years. We switched from Centenials to Bolegards a few years back and wondered if that had made the difference, or do we need of a fungicide?

ANSWERS
Heather
Certified GKH Gardening Expert

It does sound like it is a fungus or disease, but which would be hard to tell which without knowing more about the symptoms. This article lists some possible diseases it could be and how to correct them:
http://www.clemson.edu/extension/hgic/pests/plant_pests/veg_fruit/hgic2214.html

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carolynb

The patatoes are looking like they had been baked and left out to rot. It seems that the whole patatoe rots at once. You hit the skin and punch through and its all rotten. They rot almost in 2 to 3 weeks. We do use horse manure, but we have used it too for many many years

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Asked by Anonymous on May 6, 2011
Best Companion Plant for Sweet Potatoes

I’m just simply wanting to know if there are specific companion vegetables for sweet potatoes. I’ll be planting about the first of June.

ANSWERS
Nikki
Certified GKH Gardening Expert

Grow sweet potatoes with other root crops like beets as well as beans, corn, cabbage, horseradish and eggplant. Marigolds make good companions too.

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Asked by Anonymous on May 23, 2011
Sweet Potato Yield

I live in Zone 5 and am thinking of planting sweet potatoes. Can you give me an estimate of how much each plant will produce?

ANSWERS
Nikki
Certified GKH Gardening Expert

This varies widely but is approximately 125 to 250 pounds per acre. In the home garden, this will be significantly less. These articles will help:
https://www.gardeningknowhow.com/edible/vegetables/sweet-potato/grow-sweet-potatoes.htm
https://www.gardeningknowhow.com/edible/vegetables/sweet-potato/grow-sweet-potato-plant.htm

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Asked by Anonymous on May 31, 2011
Growing Sweet Potatoes (Northern)

I planted sweet potatoes in hilled, fertilized soil. I put black plastic over the hills for 2 weeks before planting the sweet potatoes. The average temp. here is between 57 at night and usually in the mid 60’s to 70’s during the day. Do I need to do more? Can I expect at least some potatoes? Do I need to put row covers over them? We have frosts in mid Sept.

ANSWERS
Nikki
Certified GKH Gardening Expert
Asked by Anonymous on July 1, 2011
How Much Water?

HELP!! I have a sweet potato plant that has grown nicely, but not sure about how often to water. I transplanted it into a bigger pot and bottom leaves turned brown.

ANSWERS
Nikki
Certified GKH Gardening Expert

Plants in containers must be watered daily, even twice a day if temperatures rise above 85 F. Water the pot for several minutes to make sure it is thoroughly soaked. This article should also help: https://www.gardeningknowhow.com/houseplants/hpgen/how-to-water-a-plant.htm

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