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Supplies to Start growing Sweet Potatoes Indoors |
Unless you are dealing with the Okinawan purple sweet potato, most sweet potatoes are pretty easy to start. One very good step to starting sweet potatoes is to find a potato variety that grows in your area. Georgia Jet seems to be one of the most popular varieties as it can be grown throughout most of the United States.
I prefer to find a Farmer’s market or a local farmer who is able to provide me with potatoes from my climate. I find sweet potatoes do very well here in the southwest, though regular potatoes do not.
I purchased my “seed sweet potato” from a local Whole Foods market in a section where they stated that it was grown locally and they produced a good number of potatoes. I am assuming the variety is Georgia Jet, though I can’t be certain. Previous to growing out the local variety I grew out two varieties I had bought from the grocery store that were from another state. The out-of-state potaoto grew large but produced very few potatoes.
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Sweet Potato Halves now in water for Growing |
To start sweet potatoes, you will need a location to keep the seed potatoes very warm (80-90 degrees F). I use a reptile heat mat with a rhetrostat to keep the temperature consistent. You can choose to sprout them suspended in a jar with toothpicks or you can choose to start them in some kind of pit filled with sand or some other substrate. The important thing is lots of moisture and warmth. I prefer to start mine inside to grow out small sweet potato plants or “slips” from the potato.
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Beginning Root Formation on Sweet Potato |
Why not just plant the whole potato in the ground? There is always a chance that the potatoes might rot underground, causing disease in the soil and which can be spread to your new sweet potato crop. In the sweet potato industry they will grow out new plants out of the potato in growing beds and harvest the young plants (called slips) from the soil when they grow large enough to continue growing without the mother tuber. These slips are then transported to the fields where they are transplanted and grow into the sweet potato crop. There is another method (that I outline in another post) to starting sweet potatoes in the garden that allows them to get started quickly as long as you are using known healthy sweet potato stock.
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Sweet Potato Slip (plant) forming on mother potato. |
Growing out Sweet Potato Slips: For my jar and toothpick method I cut the sweet potato in half and suspend 1/2 to 2/3 of the potato below the rim of the jar using toothpicks. Then I fill up the jar with water, put it in a warm place and make sure to change the water often. It can take 1-2 months to get sweet potato slips started so make sure to plan that much time in advance.
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Full Grown Slip on Sweet Potato |
Care: Compared to many other vegetable varieties sweet potatoes are relatively maintenance-free and do not require an excessive amount of fertilizer or pest control to grow strong healthy plants. They do perform better in areas where the dirt has at least had the large rocks sifted out. Once they have established themselves I just keep them well watered and occasionally make sure no large creature is chewing on the vines. Some bugs will chew at the vines but usually the vines grow faster than the bugs can reproduce.
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Sweet Potato Slip |
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The Sweet Potato Slip now a Sweet Potato Plant in my Garden |
Harvest: I usually harvest right after the first slight frost. Sweet potatoes tend to die at the slightest frost, which around here can often be in November or December. Though some use pitch forks to harvest their sweet potatoes, I choose to harvest by hand, following the roots from one tuber to another. Once I harvest my sweet potatoes I keep them moist and warm in my water heater closet to cure them. Curing the sweet potatoes allows them to store longer, which is essential I would like to plant sweet potato vines out again next summer.