Sweet Potato
Ipomoea batatas
📖 About this plant
Sweet potato (Ipomoea batatas) is a sprawling vine member of the Convolvulaceae (morning glory) family, cultivated for its starchy sweet tuberous roots that are a staple food across the tropics and subtropics. Native to Central and South America, where it has been grown for over 5,000 years, sweet potato reached India via Portuguese traders in the 16th century and is now widely cultivated across the country — especially in Bihar, Odisha, Uttar Pradesh, and West Bengal. The plant produces long trailing vines with heart-shaped leaves (often tinged purple) and large edible storage roots that come in colors ranging from the classic orange-flesh to white, yellow, purple, and red. Sweet potatoes are nutritional powerhouses — exceptionally rich in beta-carotene (vitamin A precursor, especially in orange varieties), vitamin C, vitamin B6, potassium, dietary fiber, and antioxidants. They have a lower glycemic index than regular potatoes, making them a preferred choice for people managing blood sugar. In Indian cuisine, sweet potatoes (called shakarkand in Hindi, ratala in Marathi, and chilakada dumpa in Telugu) are eaten boiled, roasted, fried as chips, made into curries, and especially popular as a fasting food during Hindu vrat (fasts) like Navratri — roasted and served with rock salt and lemon. The young leaves are also edible and used as a leafy vegetable in many Asian cuisines. The plant is drought-tolerant, low-maintenance, and produces abundantly in poor soils, making it a food-security crop.
🧑🌾 Care requirements
Full sun
Moderate; drought-tolerant once established
Moderate to high (50-80%)
22-30°C
Sandy well-draining loam; pH 5.0-6.5
Low-N; potash and phosphorus feed
🌐 Common Names
📋 Plant facts
- 🌍 Origin
- Central and South America
- 📏 Max height
- Vines 1-3 m long
- 📐 Spread
- 1-2 m spreading
- 🕰️ Bloom time
- Rarely flowers in cultivation; funnel-shaped when it does
- 🎨 Bloom color
- Pale pink or purple (rare)
- 🍃 Foliage color
- Green or purple heart-shaped leaves
- ⏳ Lifespan
- Annual (grown as annual)
- 📈 Growth rate
- Fast — harvest in 90-150 days
- ☠️ Toxicity
- Non-toxic; leaves and tubers edible
- 🌱 Propagation
- Vine cuttings or slips (sprouted tubers)
🛡️ Health & Safety
Non-toxic; leaves and tubers edible
Common issues
- Sweet potato weevil (most serious pest)
- black rot
- scurf
- fusarium wilt
- root knot nematodes
- aphids
- flea beetles
- vine borer
- storage rot
💡 Care tips
- Grow from "slips" — sprouts grown from a mature sweet potato suspended in water, or from vine cuttings.
- Plant slips 30 cm apart in raised mounds or ridges 20-30 cm high, spacing rows 90-100 cm apart.
- Use sandy well-draining soil
- heavy clay produces misshapen tubers.
- Avoid high-nitrogen fertilizer — it produces lush vines at the expense of tubers
- use phosphorus/potassium-rich feed.
- Water regularly until vines establish, then reduce
- stop watering 2-3 weeks before harvest.
- Mulch to suppress weeds and retain moisture.
- Do not rotate with other root crops.
- Harvest 90-150 days after planting when leaves start yellowing — dig carefully to avoid damaging tubers.
- Cure harvested tubers in a warm (30°C), humid place for 7-10 days to heal skins and convert starches to sugars for sweetness.
- Store cured tubers in a cool (13-15°C), dry, ventilated place for months.
- Sweet potato leaves are also edible — harvest young leaves for stir-fries and salads throughout the growing season.
