How to Grow Sweet Potatoes

Growing sweet potatoes can be a rewarding and nutritious addition to your garden. Their rich taste and numerous health benefits make them an excellent choice for any gardener looking to expand their repertoire.

How to Grow Sweet Potatoes
Growing Sweet Potatoes

Sweet potatoes are tropical plants and need a warm growing season to mature, which makes them a popular choice in Southern regions.

To successfully grow sweet potatoes, you'll need to start with slips, which are tiny sprouts grown from pre-existing sweet potato plants.

Unlike other vegetables, sweet potatoes don't grow from seeds.

You can obtain slips from a garden center or online, or even grow them yourself from a mature, healthy sweet potato.

Remember to provide the right soil conditions and ample spacing for the plants to thrive.

About Sweet Potato Plant

Sweet potatoes, scientifically known as Ipomoea batatas, belong to the morning glory family and are characterized by their vine-like growth and vibrant green leaves.

Unlike regular potatoes, sweet potatoes are not part of the nightshade family and are instead related to tropical plants, making them an excellent choice for warm climates.

These tuberous roots have an annual lifecycle and, when properly grown, provide a healthy, nutrient-rich food source.

Growing sweet potatoes involves planting slips, specially prepared sprouts that emerge from sections of mature sweet potatoes, rather than planting the whole tuber.

Growing Sweet Potatoes

To begin planting your sweet potatoes, decide whether you want to grow them in the ground or containers.

Sweet potato plants can be grown from slips, which are tiny sprouts, or cuttings that grow from mature sweet potatoes.

Prepare the ground or choose a large container, ensuring the soil is well-drained with a pH between 5.5 and 6.5.

If planting in the ground, create raised beds or incorporate sand into the soil to improve drainage. Add compost to enrich the soil.

Select a sweet potato variety that suits your climate, such as Beauregard, Centennial, or Georgia Jet.

White or lighter-fleshed varieties are more suitable for growing in containers.

After the last frost, plant the slips approximately 6 inches apart in rows, ensuring the soil temperature is at least 55°F (13°C).

Mulch the area around the plants to retain soil moisture and warmth, aiding their growth.

Throughout the summer, provide adequate water and watch your sweet potatoes thrive in their well-prepared environment.

Sweet Potato Plants
Sweet Potato Plants - Photo by CC BY 2.0

Caring for Sweet Potato Plant

Sun and Temperature

Sweet potatoes thrive in warm, full-sun environments with temperatures above 65°F.

Ensure your sweet potatoes receive at least six hours of direct sunlight daily after the last frost.

Water and Humidity

Maintaining a balance between hydration and preventing waterlogging is essential.

Proper watering is essential for healthy plant growth. Water your sweet potatoes regularly, keeping the soil consistently moist without overwatering.


Sweet potatoes grow best in well-drained, nutrient-rich soil.

Ensure your planting area has adequate drainage, and mix in organic compost for added nutrients. Ideally, the soil temperature should be around 65°F.


Fertilizers play a crucial role in promoting plant growth and soil fertility.

Apply a balanced, slow-release fertilizer, such as 5-10-10, to the soil when planting the sprouts.


Choose a large container with proper drainage holes if you're growing sweet potatoes in containers.

Monitor the growth and repot your plants in larger containers as needed when they outgrow their current space.

Pruning and Propagation

To propagate sweet potatoes, take sprouts from healthy plants and root them in water or soil.

Prune the vines to encourage bushier growth, but avoid cutting too much, as the foliage aids in energy production for the developing root.

Troubleshooting Plant Problems

Growing Problems

Sweet potatoes require well-draining soil with a pH between 5.5 and 6.5. Ensure your plants are in sandy or clay loam for optimal growth.

The growing season should have consistent temperatures above 65°F, as sweet potatoes are sensitive to cold and frost.

Water is essential for sweet potato growth, so provide ample water, especially during the early stages of development.

However, be careful not to overwater, as it can lead to root rot and other diseases. Pay attention to your plant's drainage to avoid waterlogged conditions.

Pests and Diseases

Common pests for sweet potatoes include root-knot nematodes, white grubs, and wireworms.

Inspect your plants regularly for signs of damage and take appropriate measures, such as introducing beneficial insects or applying organic insecticides.

Diseases like scurf and black rot can also affect sweet potatoes, so be vigilant for signs of disease on both foliage and tubers.

Ensure proper ventilation and humidity control to minimize the likelihood of diseases.

Properly balancing nutrients and avoiding over-fertilization can also mitigate disease and pest issues.

Companion Planting

When planting sweet potatoes, consider integrating companion plants, which can help deter pests and diseases.

Good companions include bush beans, summer savory, and marigolds.

Be cautious with planting other vines or aggressive weeds near sweet potatoes, as they might compete for nutrients and space, hindering the growth of your tubers.

Implementing these companion plants in your sweet potato garden will not only help with pest and disease control.

It can also improve soil health and create a more diverse ecosystem.


Growing sweet potatoes can be a rewarding addition to your garden.

You can ensure a successful crop by following the proper steps, such as choosing the right location with full sun exposure and planting in loose soil mounds.

Remember to keep an eye on your sweet potatoes as they grow, providing adequate water and care.

You can harvest and enjoy this versatile vegetable's delicious and nutritious benefits with patience and proper technique.

Frequently Asked Questions

What is the ideal spacing for planting sweet potatoes?

Plant sweet potato slips about 12 to 18 inches apart for optimal growth. Make sure rows are spaced 3 to 4 feet apart to allow the plants to spread.

Which companion plants are beneficial for sweet potatoes?

Some good companion plants for sweet potatoes include bush beans, sunflowers, and marigolds. These plants help deter pests and improve soil nutrients, promoting sweet potato growth.

What are the best methods to grow sweet potatoes in different climates?

In warmer climates, plant sweet potatoes directly in the ground. Consider using raised beds or containers in cooler climates to control the soil temperature better and ensure a successful harvest.

How do you prepare sweet potato slips for planting?

Cut a clean sweet potato in half or large sections to prepare sweet potato slips. Place each part in a jar or glass of water, half submerged and half above water. Use toothpicks to hold it in place.

Do sweet potatoes grow underground or above ground?

Sweet potatoes grow underground as tuberous roots. However, the plant's green vines grow above ground and can spread extensively.

What is the typical growth duration for sweet potatoes?

Sweet potatoes typically have a growth duration of about 90 to 170 days, depending on the variety. They require a long, warm growing season to mature properly.