How to Grow Sweet Potatoes: A Comprehensive Guide for Gardeners


Are you a gardener struggling to grow sweet potatoes in your garden? If you find yourself asking, "Why are my vegetables not growing?" or "Why is my garden not producing vegetables?", you’ve come to the right place.

In this blog post, we will provide you with a comprehensive guide on how to grow sweet potatoes successfully.

Whether you are a beginner or an experienced gardener, these tips and techniques will help you cultivate healthy and abundant sweet potato plants.

Understanding Sweet Potatoes

Before we dive into the process of growing sweet potatoes, let’s take a moment to understand these delicious and nutritious tubers.

Sweet potatoes are warm-season crops that thrive in tropical and subtropical regions. They belong to the Convolvulaceae family and are known for their vibrant orange flesh and sweet taste.

Selecting the Right Variety

When it comes to growing sweet potatoes, choosing the right variety is crucial. There are numerous sweet potato varieties available, each with its own unique characteristics.

Some popular varieties include Beauregard, Covington, Jewel, and Garnet.

Consider factors such as taste, yield, and disease resistance when selecting a variety that suits your preferences and growing conditions.

Preparing the Soil

Sweet potatoes prefer well-drained, loose, and fertile soil. Start by preparing the soil a few weeks before planting. Remove any weeds, rocks, or debris from the planting area.

Incorporate organic matter, such as compost or well-rotted manure, to improve soil fertility and structure. Aim for a pH level between 5. 8 and 6. 2, which is slightly acidic.

Planting Sweet Potatoes

Sweet potatoes can be grown from slips, which are young plants that develop from sprouted sweet potato tubers.

You can purchase slips from a local nursery or start your own by sprouting sweet potatoes indoors. To sprout your own slips, follow these steps:

  1. Select healthy sweet potatoes and place them in a warm and humid location, such as a windowsill or greenhouse.
  2. Cut the sweet potatoes in half and suspend them in a jar of water, ensuring that the bottom half is submerged.
  3. Change the water every few days and wait for the slips to develop roots and leaves, which usually takes around 4-6 weeks.
  4. Once the slips are around 6-8 inches long, gently twist them off the sweet potato and plant them in the garden.

When planting the slips in the garden, make sure to space them about 12-18 inches apart, with rows spaced 3-4 feet apart.

Plant the slips deep enough so that only the top leaves are above the soil surface.

Providing Optimal Growing Conditions

To ensure the successful growth of sweet potatoes, it’s essential to provide them with optimal growing conditions. Here are some key factors to consider:


Sweet potatoes thrive in full sun, so choose a location in your garden that receives at least 6-8 hours of direct sunlight per day.

Lack of sunlight can result in stunted growth and poor tuber development.


Sweet potatoes require consistent moisture, especially during the first few weeks after planting. Water the plants deeply, ensuring that the soil is evenly moist.

However, avoid overwatering, as it can lead to rotting of the tubers. Mulching the soil can help retain moisture and suppress weed growth.


Sweet potatoes are heavy feeders and benefit from regular fertilization. Before planting, incorporate a balanced organic fertilizer into the soil.

Additionally, side-dress the plants with compost or a nitrogen-rich fertilizer every few weeks to promote healthy growth.


Sweet potatoes thrive in warm temperatures between 75-90°F (24-32°C). They are sensitive to frost, so make sure to plant them after the danger of frost has passed.

If you live in a cooler climate, consider using black plastic mulch to warm the soil and extend the growing season.

Maintaining Sweet Potato Plants

Once your sweet potato plants are established, it’s important to provide them with proper care and maintenance. Here are some tips to keep your plants healthy and productive:

Weed Control

Weeds can compete with sweet potato plants for nutrients, water, and sunlight. Regularly remove weeds from the planting area to prevent them from overtaking your sweet potatoes.

Mulching the soil can also help suppress weed growth.

Pest and Disease Management

Sweet potatoes are generally resistant to pests and diseases. However, some common pests that may affect sweet potato plants include sweet potato weevils, wireworms, and whiteflies.

Monitor your plants regularly and take appropriate measures, such as using organic insecticides or employing beneficial insects, to control pest infestations.

Harvesting Sweet Potatoes

Sweet potatoes are typically ready for harvest 90-120 days after planting, depending on the variety.

Look for signs such as yellowing foliage and withering vines to determine if your sweet potatoes are ready to be harvested.

Carefully dig around the plants and gently lift the tubers from the soil. Allow them to cure in a warm and dry location for about 1-2 weeks before storing them in a cool and dark place.


Growing sweet potatoes can be a rewarding experience for gardeners.

By following the steps outlined in this comprehensive guide, you can cultivate healthy sweet potato plants and enjoy a bountiful harvest.

Remember to select the right variety, prepare the soil adequately, provide optimal growing conditions, and maintain your plants with care.

With patience and dedication, you’ll be able to grow delicious sweet potatoes in your own garden.

Frequently Asked Questions

Q: Why are my sweet potato plants not growing?

A: Several factors can contribute to slow or stunted growth in sweet potato plants.

Inadequate sunlight, poor soil conditions, overwatering, or lack of proper fertilization can all hinder plant growth.

Ensure that you are providing optimal growing conditions and addressing any potential issues.

Q: Why are the leaves of my sweet potato plants turning yellow?

A: Yellowing leaves in sweet potato plants can be a sign of nutrient deficiency, overwatering, or pest infestation.

Check the soil moisture levels, adjust your watering practices, and inspect the plants for any signs of pests.

Consider fertilizing the plants with a balanced organic fertilizer to address nutrient deficiencies.

Q: My sweet potato plants are flowering, but they are not producing any tubers. What could be the problem?

A: Sweet potato plants produce tubers in response to shortening day length. If your plants are flowering but not producing tubers, it could be due to insufficient daylight hours.

Ensure that your plants are receiving at least 12-14 hours of darkness per day to trigger tuber formation.

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