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How to Care for Sweet Potato Plant

Updated: July 17, 2023

Sweet potatoes are not only a tasty and versatile vegetable, but they can also be a beautiful addition to your garden. Whether you are growing them for their delicious tubers or their attractive vines, taking proper care of your sweet potato plant is essential for a successful harvest. In this article, we will guide you through the steps of caring for your sweet potato plant, from planting to harvest.

Planting Sweet Potato Slips

To start off, you will need sweet potato slips, which are small rooted sections of the sweet potato vine. You can either purchase these slips from a local nursery or grow your own by sprouting a sweet potato in water. Once you have your slips, it’s time to plant them in a well-prepared garden bed.

  1. Choose the right location: Sweet potatoes require full sun, so select a spot in your garden that receives at least 6-8 hours of direct sunlight each day. Additionally, ensure that the soil is loose, well-draining, and rich in organic matter.

  2. Prepare the soil: Before planting, loosen the soil with a garden fork or tiller to a depth of 8-10 inches. Remove any rocks, weeds, or roots that may impede root growth. Mix in compost or well-rotted manure to improve soil fertility.

  3. Plant the slips: Dig holes in the prepared bed that are deep enough to accommodate the entire length of the sweet potato slip. Space the slips around 12-18 inches apart in rows that are 3-4 feet apart. Gently place each slip into its hole and cover it with soil, leaving only the top leaves above ground.

  4. Water thoroughly: After planting, water the newly planted slips thoroughly to settle the soil around their roots. Keep the soil moist but not overly saturated throughout the growing season.

Nurturing the Growing Plants

Once your sweet potato slips are in the ground, it’s important to provide them with the care they need to thrive and produce a bountiful harvest. Here are some key steps to follow:

  1. Watering: Sweet potatoes prefer consistent moisture, so it’s essential to water them regularly, especially during dry spells. Aim to keep the soil consistently moist but not waterlogged. Mulching around the plants can help retain moisture and suppress weeds.

  2. Fertilizing: Sweet potatoes are heavy feeders and benefit from regular fertilization. Apply a balanced organic fertilizer at planting time, following the package instructions. Additionally, side-dress the plants with compost or a nitrogen-rich fertilizer every four weeks during the growing season.

  3. Weed control: Keeping the area around your sweet potato plants free from weeds is crucial, as weeds can compete for nutrients and water. Regularly remove weeds by hand or use mulch to suppress their growth.

  4. Training and support: Sweet potato vines can grow quite long and may require some support to prevent them from sprawling on the ground. You can use stakes or trellises to train the vines upward, allowing for better airflow and easier harvesting.

  5. Pest and disease management: While sweet potatoes are generally resistant to pests and diseases, they can still be susceptible to certain issues such as sweet potato weevils, aphids, or fungal diseases like black rot or powdery mildew. Monitor your plants regularly and take appropriate action if you notice any signs of infestation or disease.

Harvesting Sweet Potatoes

The time to harvest sweet potatoes typically varies depending on the variety and growing conditions. Most varieties take around 90-120 days to mature from planting time. Here’s how you can tell when your sweet potatoes are ready for harvest:

  1. Vine maturity: Sweet potatoes are usually harvested after the vines have started to yellow and wither. This is a sign that the tubers have reached their full size.

  2. Loosen the soil: Before harvesting, gently loosen the soil around the plants with a garden fork or shovel. Take care not to damage the tubers while doing so.

  3. Digging up the tubers: Using your hands or a garden fork, carefully lift the sweet potato tubers out of the ground. Be gentle to avoid bruising or breaking them.

  4. Curing and storage: After harvesting, sweet potatoes should be cured for about a week in a warm and humid environment (around 80-85°F and 85-90% humidity). This process helps to toughen the skin and heal any minor cuts or bruises. Once cured, store the sweet potatoes in a cool, dry place with good ventilation.

By following these guidelines, you can successfully care for your sweet potato plant from planting to harvest. With a little effort and attention, you’ll soon be enjoying the delicious rewards of your labor. Happy gardening!