How To Plant Sweet Potatoes That Have Sprouted


Selecting the Right Time and Place to Plant

Planting sweet potatoes at the right time and in the right location is crucial for a successful harvest. Sweet potatoes are warm-season crops, so it’s important to choose a time when the soil temperature is consistently above 50°F (10°C) and all danger of frost has passed.

The ideal planting time for sweet potatoes is typically in late spring or early summer, once the soil has warmed up. This allows the roots to establish and grow before the cooler fall temperatures arrive.

When selecting a planting site, look for a location that receives full sun for at least 6 hours a day. Sweet potatoes thrive in well-draining soil with a pH between 5.8 and 6.2. They require loose, sandy soil that allows the roots to easily grow and expand.

It’s important to choose a site that is free from competing weeds and invasive plants. Clear the area of any grass, weeds, or debris, and ensure that there is enough space for the sweet potato vines to spread out as they grow.

Consider the available space in your garden, as sweet potatoes can take up quite a bit of room. If you have limited space, you can grow sweet potatoes in containers or raised beds, as long as they have adequate drainage. This allows for easier soil management and can be a good option for small gardens.

Additionally, it’s recommended to rotate your sweet potato crop every few years to prevent the buildup of pests and diseases in the soil. Avoid planting sweet potatoes in areas where other root crops, such as potatoes or carrots, were grown in the previous year.

Preparing the Soil for Planting

Preparing the soil properly is vital to ensure optimal growth and yield for your sweet potato plants. Follow these steps to get your soil ready for planting:

1. Remove any weeds and debris: Start by clearing the area of any weeds, grass, or debris. This will help prevent competition for nutrients and space once the sweet potatoes are planted.

2. Test and amend the soil: Conduct a soil test to determine the pH level and nutrient content of your soil. Sweet potatoes prefer slightly acidic soil with a pH of 5.8 to 6.2. If the pH is too high, you can lower it by adding elemental sulfur or iron sulfate. If the pH is too low, you can raise it by incorporating agricultural lime. Additionally, amend the soil with organic matter, such as compost or well-rotted manure, to improve nutrient retention and drainage.

3. Loosen the soil: Sweet potatoes thrive in loose, well-draining soil. Use a garden fork or tiller to loosen the soil to a depth of at least 12 inches. This will help the roots penetrate the soil easily and promote healthy growth.

4. Create raised beds or ridges: If you have heavy clay or poorly-drained soil, consider creating raised beds or ridges. This will help improve drainage and prevent waterlogged roots. Mound the soil into ridges or create raised beds about 8-10 inches high.

5. Apply organic fertilizers: Prior to planting, apply organic fertilizers that are high in potassium and phosphorous, such as bone meal or compost. Avoid using nitrogen-rich fertilizers, as they can promote excessive foliage growth at the expense of tuber development.

6. Water the soil: Before planting, water the soil thoroughly to ensure the moisture reaches the root zone. This will create a favorable environment for the sweet potato roots to establish and grow.

7. Allow the soil to settle: After preparing the soil, allow it to settle for a few days before planting. This will help minimize the risk of soil compaction and ensure better root development.

By properly preparing your soil, you can provide the ideal growing conditions for your sweet potato plants and increase your chances of a successful harvest.

Preparing the Sweet Potato Sprouts for Planting

Before planting the sweet potato sprouts, it’s important to properly prepare them to ensure successful growth and establishment. Here’s how to prepare your sweet potato sprouts:

1. Cure the sprouts: If you have stored sweet potatoes that have already sprouted, let the sprouts cure before planting. This process involves placing the sweet potatoes in a warm, dark, and well-ventilated area for about 1-2 weeks. Curing helps the sprouts to develop stronger roots and increases their chances of survival when transplanted.

2. Select healthy sprouts: Choose sweet potato sprouts that are healthy and vigorous. Look for sprouts that are about 6-8 inches long with well-developed leaves. Avoid using sprouts that have signs of disease, damage, or rot.

3. Prepare the sprouts for planting: Trim the sprouts by removing any excess leaves or side shoots, leaving about 2-3 leaves on each sprout. This helps reduce the strain on the sprout during planting and promotes better growth.

4. Allow the sprouts to heal: After trimming, allow the sweet potato sprouts to “heal” or dry out for a day or two. This allows any cut surfaces to callus and minimizes the risk of infection.

5. Create planting slips: Sweet potato sprouts are often referred to as “slips.” To create slips, fill a container, such as a jar or cup, with water. Place the sprouts in the container with the bottom ends submerged in water and the leaves out of the water. Leave them in a warm and well-lit area for about a week or until roots start to develop.

6. Harden off the slips: Before transplanting the slips into the garden, it’s important to harden them off. Gradually acclimate the slips to outdoor conditions by placing them in a sheltered spot for a few hours each day, gradually increasing the time over the course of a week. This helps the slips adjust to temperature and light fluctuations.

7. Transplant the slips: Once the slips are hardened off and roots have developed, they are ready to be transplanted. Plant the slips in the prepared soil, burying the stems up to the bottom set of leaves. Space the slips about 12-18 inches apart, allowing enough room for the vines to spread as they grow.

By properly preparing the sweet potato sprouts before planting, you can maximize their chances of survival and ensure healthy growth and development of your sweet potato plants.

Planting the Sweet Potato Sprouts

Once the sweet potato sprouts are prepared and ready for planting, it’s time to carefully transplant them into the garden. Follow these steps to ensure successful planting of your sweet potato sprouts:

1. Choose the right planting location: Select a planting site that receives full sun for at least 6 hours a day. Ensure the soil is well-draining and has been prepared with organic matter to promote the growth of sweet potatoes.

2. Dig planting holes: Dig holes that are wide and deep enough to accommodate the roots of the sweet potato sprouts. Make the holes about 4-6 inches deep and space them approximately 12-18 inches apart, allowing for proper vine spread.

3. Add compost or fertilizer: Before placing the sweet potato sprouts in the holes, add a small amount of well-rotted compost or organic fertilizer at the bottom of each hole. This provides additional nutrients for the growing plants.

4. Plant the sprouts: Carefully place each sweet potato sprout in a planting hole, making sure to position it with the leaves above the soil surface and the bottom set of leaves just above or slightly at the soil level. Gently backfill the holes with soil, firming it around the sprouts to secure them in place.

5. Water the newly planted sprouts: After planting, water the sweet potato sprouts thoroughly. This helps settle the soil and ensures good root-to-soil contact. Keep the soil consistently moist but not waterlogged throughout the growing season.

6. Provide support (optional): If you have limited space in your garden, you can provide support for the sweet potato vines to climb. Install trellises, stakes, or cages near the planting area and gently train the vines to grow vertically, keeping them off the ground.

7. Mulch the soil: Apply a layer of organic mulch, such as straw or shredded leaves, around the base of the plants. Mulching helps conserve moisture, suppresses weed growth, and maintains a more stable soil temperature.

By following these steps, you can ensure that your sweet potato sprouts are properly planted and have the best chance of thriving in the garden. With proper care and maintenance, you’ll soon be on your way to a bountiful harvest of delicious sweet potatoes.

Caring for Newly Planted Sweet Potatoes

After planting the sweet potato sprouts, it’s important to provide proper care to ensure their healthy growth and development. Follow these essential tips for caring for newly planted sweet potatoes:

1. Water regularly: Sweet potatoes require consistent moisture, particularly during the first few weeks after planting. Ensure that the soil is kept evenly moist, but not overly saturated. Aim to water deeply, allowing the water to penetrate the soil and reach the root zone.

2. Mulch the soil: Apply a layer of organic mulch around the base of the sweet potato plants to help conserve moisture and suppress weed growth. Mulching also helps regulate soil temperature and minimizes fluctuations that could stress the plants.

3. Fertilize regularly: Sweet potatoes are heavy feeders and require regular fertilization to promote healthy growth and maximize yields. Apply a balanced organic fertilizer, such as a 5-5-5 or 10-10-10 formulation, every 4-6 weeks during the growing season. Be careful not to over-fertilize, as this can lead to excessive foliage growth with limited tuber development.

4. Provide support for vining varieties: If you’re growing vining sweet potato varieties or have limited space, providing support for the vines can help keep them off the ground and prevent them from sprawling. Install trellises, stakes, or cages and gently train the vines as they grow.

5. Monitor for pests and diseases: Regularly inspect your sweet potato plants for any signs of pests or diseases. Common pests that can affect sweet potatoes include sweet potato weevils, aphids, and flea beetles. If you notice any issues, take appropriate measures such as handpicking pests or using organic insecticides to protect your plants. Rotating your sweet potato crop each year can help prevent the buildup of pests and diseases in the soil.

6. Weed diligently: Keep the planting area free from weeds, as they compete with the sweet potato plants for nutrients, water, and sunlight. Regularly remove any weeds that appear around the plants, taking care to avoid disturbing the delicate roots.

7. Monitor soil moisture and temperature: Sweet potatoes prefer warm and well-drained soil. Ensure that the soil temperature remains consistently above 50°F (10°C) as cooler temperatures can hinder their growth. Also, be mindful of excessive moisture, as waterlogged soil can lead to root rot. Regularly check the soil moisture level and adjust watering accordingly.

By providing proper care and attention to your newly planted sweet potatoes, you’ll encourage healthy growth, vigorous vines, and a bountiful harvest of delicious tubers.

Monitoring and Managing Pests and Diseases

As your sweet potato plants grow, it’s essential to monitor them for any signs of pests or diseases that can potentially harm your crop. Early detection and proper management are key to minimizing damage and ensuring a healthy harvest. Here are some tips for monitoring and managing common pests and diseases that affect sweet potatoes:

1. Regularly inspect your plants: Take the time to inspect your sweet potato plants regularly, paying close attention to both the foliage and the tubers. Look for any signs of pest activity, such as chewed leaves, holes, or clusters of insects, as well as any signs of disease, such as wilting, discoloration, or abnormal growth.

2. Identify common pests: Familiarize yourself with the common pests that can affect sweet potatoes, including sweet potato weevils, aphids, flea beetles, and nematodes. Learning to identify these pests will help you take appropriate action when necessary.

3. Use organic pest control methods: Whenever possible, use organic pest control methods to manage pests. This includes techniques such as handpicking insects off the plants, introducing beneficial insects, using insecticidal soaps or neem oil sprays, or employing physical barriers such as row covers.

4. Practice crop rotation: Rotating your sweet potato crop each year can help prevent the buildup of pests and diseases in the soil. Avoid planting sweet potatoes in the same area where you grew them or other related crops (such as potatoes or tomatoes) in the previous year.

5. Implement cultural control methods: Cultural practices can help minimize the risk of pest and disease issues. This includes practices such as maintaining proper spacing between plants, practicing good sanitation by removing plant debris and fallen leaves, and providing adequate ventilation to prevent the buildup of moisture.

6. Monitor for diseases: Sweet potatoes can be prone to certain diseases, such as fungal rots, viruses, and bacterial infections. Look out for symptoms like leaf spots, rotting tubers, yellowing, or stunting. Promptly remove and destroy any infected plants to prevent the spread of the disease.

7. Seek professional advice: If you’re encountering persistent or severe pest or disease issues, consider seeking advice from local agricultural extension services or gardening experts. They can provide guidance on specific pest and disease management strategies tailored to your region.

By closely monitoring your sweet potato plants and taking appropriate action at the first sign of trouble, you can effectively manage pests and diseases, ensuring the health and productivity of your crop.

Harvesting Sweet Potatoes

Harvesting sweet potatoes at the right time is crucial to ensure optimal flavor and texture. When the growing season is complete and the foliage begins to die back, it’s time to harvest your sweet potatoes. Follow these steps to harvest your sweet potatoes:

1. Timing: Sweet potatoes are typically ready to harvest around 90 to 120 days after planting, depending on the variety. In most cases, you can start harvesting once the vines have turned yellow or brown and the leaves have withered.

2. Loosen the soil: Before harvesting, carefully loosen the soil around the base of the sweet potato plants using a garden fork or shovel. Take care to avoid damaging the tubers, as they are delicate and can bruise easily.

3. Gently lift the tubers: Use your hands or a garden fork to gently lift the sweet potatoes from the soil. Start digging a few inches away from the base of the plant to avoid damaging the tubers. Lift the tubers out of the ground, taking care not to break or bruise them.

4. Cure the sweet potatoes: After harvesting, it’s important to cure the sweet potatoes before storing them. Place the harvested sweet potatoes in a warm and well-ventilated area with a temperature of around 85-90°F (29-32°C) and a humidity of 85-90%. Leave them to cure for about 10 days. Curing allows the sweet potatoes to develop a sweeter flavor and improves their storage quality.

5. Store properly: Once the sweet potatoes have cured, store them in a cool, dry, and dark location with a temperature of around 50-60°F (10-15°C). Avoid exposure to direct sunlight, moisture, or extreme temperature fluctuations, as this can cause them to spoil or sprout prematurely. Properly stored sweet potatoes can last for several months.

6. Handle with care: Sweet potatoes are delicate and can easily bruise or be damaged during harvesting and handling. Be gentle when lifting them from the ground and avoid dropping or mishandling the tubers to ensure their quality and longevity.

7. Enjoy your harvest: Once the sweet potatoes have been cured and properly stored, they are ready to be enjoyed! Use them in a variety of recipes, from roasted sweet potato fries to sweet potato casserole, and savor the delicious flavors of your homegrown harvest.

By following these steps and harvesting at the right time, you can enjoy the fruitful rewards of your sweet potato plants and experience the satisfaction of growing and enjoying your own homegrown produce.