Seed to Supper Database

Sweet Potato

Grower's Guide

"From slip to supper to soil — the whole plant feeds you."

Sweet potatoes might be the most generous thing you can grow — the roots feed you all winter, the leaves feed you all summer, and one potato can start a dozen new plants for free. At 79 cents a pound, they're already a bargain. Grow your own and they're practically free.

Parts Mapped

Every piece accounted for

Total Uses

Nothing wasted

Preservation Methods

Year-round supply

Culinary Pierce with a fork and bake at 400°F for 45-60 minutes until soft and caramelized — split open and top with butter and cinnamon

Culinary Peel, cube, and roast at 425°F with olive oil, salt, and smoked paprika for crispy-edged sheet pan sweet potatoes

Culinary Boil and mash with butter, brown sugar, and a pinch of nutmeg for the creamiest holiday side dish

Culinary Slice into ½-inch rounds, brush with oil, and air fry at 400°F for 12 minutes for sweet potato chips

Culinary Cube and simmer in coconut milk with curry paste, chickpeas, and spinach for a one-pot curry under $5

Culinary Mash cooked sweet potato into pancake batter, muffins, or bread dough for natural sweetness and moisture

Culinary Puree roasted sweet potato with broth and a splash of cream for a silky soup that freezes beautifully

Culinary Stuff baked sweet potatoes with black beans, cheese, salsa, and sour cream for a $1.50 complete meal

Culinary Spiralize raw sweet potato into noodles and sauté 5 minutes in olive oil for a low-carb pasta swap

Garden Compost any cooked scraps, peels, or spoiled portions — sweet potato breaks down fast and enriches the pile

Household Mash cooked sweet potato with honey and yogurt for a moisturizing face mask — the beta-carotene is a bonus

Culinary Leave the skin ON when roasting or baking — it crisps up beautifully and holds the most fiber and vitamins

Culinary Save peels, toss with olive oil and salt, and bake at 400°F for 10-12 minutes for free crispy sweet potato skins

Culinary Fry peels in a little oil until crispy, then sprinkle with cinnamon sugar for a sweet snack from scraps

Culinary Simmer a handful of peels into broth or stock for extra body and a touch of natural sweetness

Garden Add peels directly to compost — they're rich in nutrients and decompose in days

Garden Bury peels 2 inches deep near plants as a direct soil amendment — worms love them

Household Rub the moist inside of a fresh sweet potato peel on minor skin irritation — folk remedy for soothing dry, itchy patches

Culinary Sauté sweet potato leaves with garlic and olive oil just like spinach — they cook down in 3 minutes and taste mild and earthy

Culinary Add young, tender leaves to soups and stews in the last 5 minutes of cooking for free, nutritious greens

Culinary Chop leaves and stir into scrambled eggs, omelets, or frittatas for a garden-fresh breakfast

Culinary Blanch leaves for 30 seconds, then add to stir-fries with soy sauce and sesame oil — common in Asian and African cooking

Culinary Use large leaves as wraps for rice and seasoned meat — steam or eat fresh like lettuce wraps

Garden Chop spent vines and leaves and lay them on beds as green mulch — they decompose fast and feed the soil

Garden Turn vines into the soil after harvest as a green manure — they add organic matter and nitrogen

Garden Compost any extra vines and leaves — they're a nitrogen-rich green addition to the pile

Culinary Very young slips (under 4 inches) are edible — snip and add to salads or stir-fries like microgreens

Garden Suspend a sweet potato halfway in a jar of water — in 2-3 weeks it'll sprout slips you can twist off and plant for free

Garden Root slips in water for 5-7 days until roots appear, then transplant into warm garden soil 12-18 inches apart

Garden One sweet potato produces 8-12 slips — that's a whole garden bed from a single 79-cent potato

Garden Share extra slips with neighbors or trade at community garden swaps — they're better than money in gardening circles

Household Sweet potato in a jar with sprouting slips makes a beautiful, living kitchen windowsill decoration

Culinary Cut away any bad spots — the rest is perfectly fine. Roast or boil as normal.

Culinary Soft sweet potatoes are actually BETTER for baking — mash into sweet potato pie, casserole, or bread

Culinary Puree overripe sweet potato and freeze in ice cube trays for smoothie boosters, baby food, or quick soup starters

Culinary Mix mashed overripe sweet potato with oats, egg, and cinnamon for naturally sweet dog treats — bake at 350°F for 20 minutes

Garden A sprouting sweet potato is a gift, not garbage — plant it and grow a whole new crop

Garden Chop up any truly spoiled portions and bury in the compost pile or directly in a garden trench

Difficulty

Easy — very forgiving and low maintenance

Sun

Full sun (6-8 hours minimum)

Water

1 inch per week, less once established

Time to Harvest

90-120 days from transplanting slips

Zones

5-11 (needs warm soil, at least 60°F)

Spacing

12-18 inches apart in rows 3-4 feet wide

🪴 Where You Can Grow It

Garden bed Raised bed (at least 12 inches deep) Large grow bag (15-20 gallon) 5-gallon bucket (smaller yield) Straw bale Compost pile (they love the heat)

🌱 Best Varieties

Beauregard

Most popular — high yield, great flavor, stores well. The standard backyard variety.

Jewel

Deep orange, moist flesh — excellent for baking and pies

Covington

Sweet, consistent, disease-resistant — the grocery store standard you can grow at home

Japanese/Murasaki

Purple skin, white flesh — drier and nuttier, amazing roasted with butter

Georgia Jet

Fast-maturing (90 days) — perfect for shorter growing seasons up north

✅ Good Companions

Beans

Peas

Thyme

Oregano

Dill

Nasturtiums

Marigolds

⛔ Keep Away From

Squash (competes for space)

Tomatoes (share pests)

💡 Grandmaw's Tips

🌱 Don't start from seed — start from slips. Stick a sweet potato halfway into a jar of water on a sunny windowsill in early spring and it'll grow its own transplants for free.

🌱 Sweet potatoes need WARM soil — don't rush them into the ground. Wait until soil is at least 60°F or they'll just sit there and sulk.

🌱 Build mounded rows or hills 8-10 inches high — the loose, warm soil gives roots room to swell and makes harvest easier.

🌱 Stop watering 2-3 weeks before harvest. This toughens the skin and prevents cracking, which means they'll store longer.

🌱 Harvest before the first frost — cold soil damages sweet potatoes fast. Use a garden fork and start digging a foot away from the base to avoid stabbing your crop.

🌱 After harvest, cure them in a warm (80-85°F), humid spot for 7-10 days. This heals skin nicks, converts starch to sugar, and they'll keep for 6 months or more in a cool pantry.

🌱 Don't wash sweet potatoes until you're ready to use them — dirt is their natural storage coat.

Every item below works beautifully with sweet potato.

🥩 Proteins

Black beans Chicken thighs Ground turkey Eggs Bacon Pork chops Chickpeas Lentils Italian sausage Ground beef

🥬 Vegetables

Onion Bell pepper Kale Spinach Corn Broccoli Brussels sprouts Cauliflower Carrots Zucchini Tomato Green beans

🌿 Herbs

Cilantro Rosemary Thyme Sage Parsley Chives Oregano

🧂 Spices

Cinnamon Cumin Smoked paprika Garlic Chili powder Nutmeg Cayenne Curry powder Ginger Black pepper

🧀 Dairy

Butter Sour cream Cheddar Cream cheese Parmesan Goat cheese Plain yogurt

🫙 Pantry

Brown sugar Maple syrup Olive oil Coconut milk Rice Canned black beans Chicken broth Pecans Tortillas Breadcrumbs Honey Oats

🔗 Explore more foods in Grandmaw's Pantry

Here's how to keep sweet potato all year long.

🏠 Root Cellaring / Cool Storage

4-6 months

Best for: Fresh eating all winter — baked, mashed, roasted, fried

💡 After curing, store in a cool (55-60°F), dark, dry spot. A basement, unheated closet, or garage shelf works. Don't refrigerate them — cold turns the starch and ruins the texture.

❄️ Freezing (Cooked/Mashed)

10-12 months

Best for: Casseroles, pies, soup base, baby food, smoothie cubes

💡 Bake or boil until soft, mash or puree, and freeze flat in quart bags. Having pre-mashed sweet potato in the freezer means sweet potato casserole is always 20 minutes away.

❄️ Freezing (Cubed/Roasted)

6-8 months

Best for: Sheet pan dinners, bowls, hash, stir-fry

💡 Peel, cube, blanch 3 minutes, cool, and freeze on a sheet pan before bagging. Or roast them first and freeze — they reheat in the oven in 10 minutes.

🥫 Pressure Canning (Cubed)

12-18 months

Best for: Ready-to-eat side dish, soup starter, mashing in minutes

💡 Sweet potatoes are low-acid, so pressure canning is the only safe method. Can in cubes with a light syrup or plain water. Worth the effort — pop a jar and dinner is half done.

🌬️ Dehydrating (Chips or Dice)

1-2 years

Best for: Snacking, trail mix, backpacking meals, dog treats, soup mixes

💡 Slice thin for chips or dice small, blanch first, then dehydrate at 135°F for 8-12 hours. Sweet potato chips are addictive and store in a mason jar for months.

🫧 Fermenting (Sweet Potato Fly)

1-2 weeks (refrigerated)

Best for: Traditional fermented beverage, a fun project

💡 Grate raw sweet potato into water with sugar and ginger, let it ferment 2-4 days at room temperature. It's fizzy, tangy, and slightly sweet — an old-time probiotic drink from the Caribbean and Africa.

🔗 Learn preservation methods in Grandmaw's Kitchen

Seed to Supper to Seed

Nothing leaves the cycle. Everything comes back around.

🍠

Save one sweet potato from your harvest or buy one for 79 cents

💧

Suspend it in a jar of water on a sunny windowsill in late winter

🌱

Twist off 8-12 slips once they're 6 inches tall — root them in water for a week

🌿

Transplant slips into warm, mounded garden soil after last frost

🥬

Harvest leaves and vine tips all summer for free greens — sauté like spinach

🍠

Dig sweet potatoes before first frost — use a fork, start wide, go gentle

☀️

Cure in a warm, humid spot for 7-10 days to sweeten and toughen skin

🏠

Store cured potatoes in a cool, dark place — they'll last until spring

🍳

Eat fresh all winter — baked, mashed, roasted, fried, in pies and soups

❄️

Freeze or can any surplus for year-round sweet potato at your fingertips

🔄

Set aside one beautiful potato to start next year's slips — the cycle never stops