Georgia’s long, warm summers allow sweet potatoes to be planted as early as mid-April. Knowing the best time to plant sweet potato in Georgia is the first step to a big harvest. This guide gives you exact dates, soil tips, and care steps for sweet potatoes in the Peach State.
Sweet potatoes need heat. They are not like regular potatoes. They come from tropical areas and hate cold soil. Plant them too early and they rot. Plant them too late and they won’t grow big before frost.
Best Time To Plant Sweet Potato In Georgia
The best time to plant sweet potato in Georgia is from mid-April to early June. The exact date depends on your part of the state. The key factor is soil temperature. You need the soil to be at least 60°F (15°C) at 4 inches deep. Air temperature should stay above 50°F at night.
Here is a simple breakdown by region:
- South Georgia (Valdosta, Savannah, Albany): Mid-April to early May. Soil warms up first here.
- Middle Georgia (Macon, Augusta, Columbus): Late April to mid-May. Safe window starts later.
- North Georgia (Atlanta, Athens, Gainesville): Early May to early June. Wait for consistent warmth.
- Mountain areas (Blue Ridge, Dahlonega): Mid-May to early June. Shortest growing season.
Do not rush. Cold soil kills slips (young plants). A late frost in April can damage or kill them. Wait until the danger of frost has passed. In Georgia, the last frost date varies. South Georgia sees last frost around March 20. North Georgia can have frost until April 15 or later.
Checking Soil Temperature
Use a soil thermometer. Insert it 4 inches deep. Check at 10 AM. Do this for three days in a row. If the average is 60°F or higher, you are safe. If it is below 55°F, wait another week.
You can also use this trick: Plant sweet potatoes about two weeks after you plant corn or tomatoes. Those crops need similar warmth. If your corn is up and growing, the soil is warm enough.
What Happens If You Plant Too Early
Planting too early is a common mistake. The slips sit in cold, wet soil. They do not grow roots. Instead, they rot or get diseases. You lose money and time. You might need to buy new slips and replant. That pushes your harvest back.
Planting too late is also a problem. Sweet potatoes need 90 to 120 days to mature. If you plant in late June, the first frost might hit before they are full size. In north Georgia, first frost can come as early as mid-October. That gives you only 120 days from June 1. It is tight.
Preparing Your Garden For Sweet Potatoes
Before you plant, get the soil ready. Sweet potatoes like loose, sandy loam. Heavy clay soil makes them grow long and skinny. They also need full sun. At least 8 hours of direct sunlight each day.
Soil Preparation Steps
- Choose a sunny spot. Avoid shade from trees or buildings.
- Remove weeds and rocks. Sweet potatoes need room to swell underground.
- Loosen the soil. Dig down 10 to 12 inches. Break up clumps.
- Add organic matter. Mix in 2 to 3 inches of compost or aged manure. Do not use fresh manure. It burns roots.
- Check pH. Sweet potatoes like pH between 5.5 and 6.5. Test your soil. Add lime if pH is too low. Add sulfur if it is too high.
- Do not add too much nitrogen. Too much nitrogen makes big leaves but small roots. Use a low-nitrogen fertilizer like 5-10-10.
Raised beds work great for sweet potatoes. They warm up faster in spring. They also drain better. In Georgia’s humid summers, good drainage prevents rot.
Choosing The Right Variety
Georgia growers have many options. Some varieties do better in the state’s climate. Here are popular choices:
- Beauregard: The most common. Matures in 90-100 days. Good for south and middle Georgia.
- Georgia Jet: Bred for cooler areas. Matures in 90 days. Good for north Georgia.
- Covington: Sweet and uniform. Matures in 100-110 days. Popular in the Southeast.
- Centennial: Old variety. Matures in 100-110 days. Good flavor.
- Purple sweet potatoes: Take longer (120 days). Only for south Georgia with a long season.
Buy slips from a trusted nursery. Do not use grocery store sweet potatoes. They might carry diseases. They are also often treated to prevent sprouting.
How To Plant Sweet Potato Slips
Slips are small plants grown from a mature sweet potato. You can buy them or grow your own. Planting them correctly gives them a strong start.
Planting Steps
- Harden off slips. If you bought them by mail, they need to adjust. Keep them in a shady spot for 2-3 days. Then give them morning sun for a few days.
- Water slips well. Before planting, soak the roots in water for 1 hour.
- Make holes. Space holes 12 to 18 inches apart. Rows should be 3 to 4 feet apart. This gives vines room to spread.
- Plant deep. Bury the slip up to the top leaves. Remove the bottom leaves. The stem will grow roots along its length.
- Water in. Give each slip a good drink of water. This settles the soil around the roots.
- Mulch lightly. Use straw or pine straw. Mulch keeps soil warm and stops weeds. Do not pile mulch against the stem.
Some gardeners plant slips on ridges or hills. This helps the soil warm up faster. It also improves drainage. In heavy clay soil, ridges are a good idea.
Spacing For Bigger Roots
Closer spacing gives more roots but smaller ones. Wider spacing gives fewer but larger roots. For home gardens, 12 inches apart is a good balance. If you want huge baking potatoes, space them 18 inches apart.
Caring For Sweet Potatoes After Planting
Sweet potatoes need consistent care. They are not fussy, but they do need water and weed control. Here is what to do after planting.
Watering
Water deeply once a week if there is no rain. Sweet potatoes need about 1 inch of water per week. Do not overwater. Wet soil causes rot. In Georgia’s summer heat, check soil moisture often. Stick your finger in the soil. If it is dry 2 inches down, water.
Stop watering 2-3 weeks before harvest. This helps the roots cure and store better. Dry soil also makes digging easier.
Weeding
Weeds steal water and nutrients. They also shade the young plants. Keep the bed weed-free for the first 4-6 weeks. After that, the sweet potato vines cover the ground. They shade out most weeds.
Use a hoe carefully. Sweet potato roots grow close to the surface. Do not cut them with a hoe. Hand pull weeds near the plants.
Fertilizing
Sweet potatoes are light feeders. Too much fertilizer makes leafy vines and small roots. If you prepared the soil well, you might not need more fertilizer.
If leaves look pale, side-dress with a low-nitrogen fertilizer. Use 5-10-10 or 8-24-24. Apply it 4-6 weeks after planting. Sprinkle it along the row, not right against the plants. Water it in.
Do not use high-nitrogen fertilizers like 10-10-10. They cause lush vines and poor roots.
Pest And Disease Control
Sweet potatoes have few pests in Georgia. The main ones are:
- Sweet potato weevil: Small beetle that lays eggs in roots. Use certified disease-free slips. Rotate crops. Do not plant sweet potatoes in the same spot for 3 years.
- Wireworms: They make small holes in roots. Control by tilling soil in fall. This exposes larvae to birds.
- Fungal diseases: Fusarium rot and scurf. Use resistant varieties. Rotate crops. Do not plant in wet soil.
Deer and rabbits might eat the vines. Use fencing if they are a problem in your area.
When To Harvest Sweet Potatoes In Georgia
Harvest time depends on when you planted. Count 90 to 120 days from planting. For a mid-April planting in south Georgia, harvest starts in mid-July. For a May planting in north Georgia, harvest is in September or October.
Look for signs of maturity. The leaves start to yellow. The vines thin out. The soil cracks near the base of the plant. You can dig up one root to check size. If it is big enough, harvest the whole row.
Do not wait too long. A frost kills the vines. If the vines die, the roots stop growing. They also get damaged by cold soil. Harvest before the first frost. In north Georgia, that means late September or early October. In south Georgia, you can wait until November.
How To Harvest
- Cut the vines. Use shears or a machete. Leave 4-6 inches of stem on each root. This helps with curing.
- Dig carefully. Use a garden fork. Start 12 inches away from the plant. Lift the soil gently. Do not stab the roots.
- Brush off soil. Do not wash them. Wet roots rot during curing.
- Sort roots. Keep undamaged roots for storage. Eat damaged ones first.
Handle sweet potatoes gently. They bruise easily. Bruised spots rot during storage.
Curing And Storing Sweet Potatoes
Curing is a critical step. It heals small cuts and bruises. It also turns starches into sugars. This gives sweet potatoes their sweet taste. Uncured sweet potatoes are bland and watery.
Curing Process
- Keep them warm and humid. Ideal temperature is 80-85°F. Humidity should be 80-90%. This is hard in Georgia’s fall. Use a warm room or a greenhouse.
- Let them cure for 7-10 days. Do not stack them more than 2 deep. Air needs to circulate.
- Check for rot. Remove any soft or smelly roots.
If you cannot get high humidity, put the roots in a plastic bag with holes. Or put a pan of water in the room. Do not let them get wet.
Long-Term Storage
After curing, move them to a cool, dark place. Ideal storage temperature is 55-60°F. Do not refrigerate. Cold temperatures below 50°F damage the roots. They get a hard core and lose flavor.
Store them in a cardboard box or wooden crate. Do not use plastic bags. They trap moisture and cause rot. Check them every few weeks. Remove any that start to rot.
Properly cured and stored sweet potatoes last 6-8 months. In Georgia, you can enjoy them through winter and into spring.
Common Mistakes And How To Avoid Them
Even experienced gardeners make mistakes. Here are the most common ones with sweet potatoes in Georgia.
- Planting too early. Wait for soil to reach 60°F. Use a thermometer.
- Overwatering. Sweet potatoes need water, but not soggy soil. Let the soil dry between waterings.
- Too much nitrogen. Use low-nitrogen fertilizer. Do not use fresh manure.
- Planting in shade. Sweet potatoes need full sun. Partial shade gives small roots.
- Harvesting too late. Frost kills vines and damages roots. Watch the weather.
- Skipping curing. Uncured roots do not store well. They also lack sweetness.
Learn from these mistakes. Your next crop will be better.
Frequently Asked Questions
Can I plant sweet potatoes in July in Georgia?
July is too late for most of Georgia. The growing season is too short. Only south Georgia might get a harvest if you plant early July and have a late frost. But roots will be small. Stick to April-June.
What is the best time to plant sweet potato in Georgia for a fall harvest?
For a fall harvest, plant in late May to early June. This gives 90-120 days before the first frost. In north Georgia, plant by June 1. In south Georgia, you can plant until June 15.
Do sweet potatoes need full sun in Georgia?
Yes. Full sun is essential. At least 8 hours of direct sunlight daily. Less sun means smaller roots and more vine growth.
How deep should I plant sweet potato slips?
Plant them deep enough to cover the roots and lower stem. Remove the bottom leaves. Bury the stem up to the top leaves. This encourages root growth along the stem.
Can I grow sweet potatoes in containers in Georgia?
Yes. Use a large container, at least 20 inches deep and wide. Use loose potting soil. Water more often because containers dry out fast. Harvest time is the same as in-ground planting.
Final Tips For Georgia Growers
Sweet potatoes are one of the easiest crops for Georgia gardens. They love heat. They resist pests. They store for months. The key is timing. Plant at the right time and you get a big harvest.
Start with good slips. Prepare the soil well. Water wisely. Harvest before frost. Cure them properly. Follow these steps and you will have sweet potatoes from your own garden.
Georgia’s climate is perfect for sweet potatoes. Use the long, warm summer to your advantage. Plant in late April or May. Enjoy fresh sweet potatoes in fall. Store them for winter meals. It is that simple.
Remember the best time to plant sweet potato in Georgia is when the soil is warm and frost is gone. Check your local frost dates. Use a soil thermometer. Do not rush. Your patience will be rewarded with sweet, tasty roots.
Happy gardening. Your sweet potatoes are waiting.