Sweet potatoes are more than just a delicious and versatile addition to your table; they’re also a joy to grow in your garden. Whether roasted, mashed, or turned into fries, these nutrient-packed veggies are a staple in kitchens worldwide. But what makes sweet potatoes even more rewarding is the satisfaction of growing them yourself. With their beautiful vining leaves they’re as visually appealing in the garden as they are delicious (and nutritious) on your plate.
If you’ve ever wondered how to cultivate your own crop of sweet, earthy goodness, you’re in the right place. Growing sweet potatoes might seem intimidating at first, but with a little preparation and the right tips, you’ll be well on your way to a plentiful harvest. From selecting the perfect variety to ensuring optimal growing conditions, this guide will walk you through everything you need to know to grow sweet potatoes that are as delicious as they are nutritious.
Let’s dig in and get to growing your sweet potatoes!
How To Grow Delicious Sweet Potatoes In Your Garden
Tips for growing sweet potatoes:
Tip 1: Choose the Right Variety
Selecting the right variety of sweet potatoes is super crucial for a successful harvest!
Different varieties thrive in different climates, so research the options best suited to your area. Varieties like Beauregard, Jewel, and Covington are popular choices for their ability to adapt to different weather and still yield a lot of sweet potatoes.
If you live in a cooler region, look for fast-maturing varieties to make the most of your shorter growing season. Choosing disease-resistant varieties can also help minimize common issues like fungal infections or weevil damage. Knowing what diseases your climate and region is prone to will really help you choose the best possible variety for you.
When picking sweet potatoes, consider what you’ll use them for. Some varieties have sweeter flavors or creamier textures, ideal for baking or roasting, while others are better for savory dishes.
Tip 2: Start with Healthy Slips
Healthy slips are young sprouts grown from sweet potatoes and are essential for a strong harvest. To grow your own slips, start with a clean, disease-free sweet potato. Place it in a jar of water or shallow soil, leaving half of it exposed. Over a few weeks, it will sprout roots and shoots. Once the shoots reach 6-9 inches long, gently separate them from the tuber, ensuring each slip has roots attached.
If buying slips, look for ones with firm stems and green leaves. Avoid wilted or yellowing slips, as they may struggle to establish themselves in the soil. Plant your slips promptly after purchase or keep them moist until you’re ready to transplant. Healthy slips grow into vigorous plants, setting the stage for a plentiful harvest.
Tip 3: Prepare the Soil
Sweet potatoes thrive in loose, well-drained soil, as compacted or clay-heavy soils can stunt root development. Before planting, prepare your garden bed by loosening the soil to a depth of at least 12 inches. Incorporate organic matter such as compost or well-rotted manure to enrich the soil and promote better aeration. Sweet potatoes prefer slightly acidic to neutral soil with a pH between 5.8 and 6.2, so test and adjust your soil if necessary.
Raised beds or mounds are excellent options for sweet potatoes, as they improve drainage and warmth. Avoid using overly rich nitrogen fertilizers, as they can encourage leafy growth at the expense of root development. With well-prepared soil, your plants will have the foundation to produce large, healthy potatoes.
Tip 4: Choose the Right Location
A sunny location is vital for sweet potatoes to grow successfully!
These plants need at least 6-8 hours of direct sunlight each day to thrive. Ensure the planting site is free from shade cast by trees or buildings. Since sweet potatoes are vining plants, they also need space to sprawl. Plant them in rows or give them a trellis to climb if space is limited.
In addition to sunlight, the site should have good drainage. Sweet potatoes are susceptible to root rot in overly wet conditions, so avoid planting in low-lying areas prone to waterlogging. Choosing a location with the right amount of warmth and sun exposure will support strong plant growth and maximize your harvest.
Tip 5: Water Wisely
Proper watering is essential for sweet potatoes to establish and produce well-formed tubers. During the first few weeks after planting, keep the soil consistently moist but not soggy to help the slips establish their roots. Water deeply and less frequently to encourage the roots to grow deeper into the soil. Once the plants are established, they become more drought-tolerant, but occasional watering during dry periods will ensure steady growth.
Be cautious not to overwater, especially as the harvest time approaches. Too much water can lead to splitting tubers or promote fungal diseases. Mulching around the plants helps retain soil moisture and reduces the frequency of watering. Well-watered sweet potatoes are healthier and more likely to yield sweet, well-formed tubers.
If you aren’t new around here you have probably heard me yell a million times about the gangers of overwatering but hey here is another warning- there is too much of a good thing!
Tip 6: Fertilize Sparingly
Sweet potatoes are light feeders, so over-fertilizing can be counterproductive. Using a fertilizer high in nitrogen encourages lush foliage but reduces tuber production. Instead, choose a balanced or low-nitrogen fertilizer to support root growth. A fertilizer labeled with a ratio like 5-10-10 (low nitrogen, higher phosphorus and potassium) is ideal.
Apply fertilizer sparingly and incorporate it into the soil before planting or as a side dressing during the growing season. Organic options like bone meal or fish emulsion are also excellent for supporting sweet potato development. Proper fertilization ensures the plants focus their energy on forming delicious tubers rather than excessive vine growth.
Tip 7: Harvest and Cure Properly
Harvest sweet potatoes when the leaves start to yellow, typically 90-120 days after planting, depending on the variety. Use a garden fork to dig carefully around the base of the plants, taking care not to damage the tubers.
Damaged tubers spoil quickly and can’t be stored for long!
Once harvested, sweet potatoes need to cure to develop their sweetness fully. Curing involves storing the tubers in a warm, humid environment (80-85°F and 85-90% humidity) for about 7-10 days. This process converts starches into sugars and thickens the skin for better storage. After curing, store the tubers in a cool, dark place to enjoy sweet, flavorful potatoes for months to come.
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