Garnet

Family: Convolvulaceae Root Vegetable

Velvety, garnet-orange flesh with a luminous, honeyed sweetness—Garnet sweet potato delivers a rich, creamy texture that feels almost custard-smooth when roasted.

Its deep orange color holds beautifully, making it a standout for mashing, puréeing, and hearty casseroles, while its naturally sweet character shines in savory-sweet sauces and pickled preparations. Grow Garnet for a dependable 90-day harvest and a harvest basket that looks as vibrant as it tastes.

Light: Full SunMaturity: 90 DaysHabit: Vine

Planting schedules and alerts are optimized for Columbus (Zone 6b).

Crop Dates

Milestone	Date
Start Indoors	Direct Sow
Last Frost	Apr 25th
Transplant / Sow Outdoors	Apr 25th
Harvest Begins	Jul 24th
Harvest Ends	Oct 16th

Crop Details

Trait	Value
Days to Maturity	90
Sun Requirements	Full Sun
Growth Habit	Vine
Support Needed	Trellis
Planting Depth	Normal
Germination Temp (°F)	75
Min Soil Temp (°F)	65
Min Night Temp (°F)	55
Harden Off (days)	Not Required

Culinary Notes

Chef's Note

Garnet sweet potato roasts into that custard-smooth center, so it wants heat and fat—think butter-browned and salted hard—rather than watery treatments. The honeyed sweetness takes beautifully to acid (lime) and sharp spice (black pepper/ginger) to keep it from going dessert-cloying.

Best Uses

roast-and-mash with a quick butter-salt finish
purée for silky soups or pasta sauces
hearty gratins/casseroles where it holds shape but turns tender
savory-sweet glazes or quick pickled preparations

Flavor Profile

luminous honeyed sweetness creamy, custard-smooth roast texture velvety, slightly earthy finish subtle vanilla-like warmth

Kitchen Pairings

brown butter lime cinnamon ginger maple syrup black pepper

Frequently Asked Questions

What’s a common problem for Ipomoea batatas (sweet potato) and how do I control it at home?

A frequent issue is sweet potato weevil (larvae bore into storage roots) or stem/root damage from soil-borne insects and rot. Inspect slips and crowns before planting, avoid injuring roots during weeding or digging, and remove any plants showing wilting with blackened stems—discard them rather than composting. Keep planting beds well-drained and practice crop rotation (don’t grow sweet potatoes or related morning glories in the same spot the next season).

How often should I water sweet potato during the main growing phase?

During active vine growth, water deeply about once per week to keep the top 2–4 inches of soil lightly moist, not soggy. If your area gets no rain and you see wilt during the hottest part of the day, water sooner but then let the soil surface dry slightly before the next watering. From about 2–3 weeks before harvest, reduce watering to help prevent root cracking and storage rot.

How can I tell when my sweet potatoes are ready to harvest?

Harvest when vines start yellowing and dying back, typically around 90 days after planting slips (sometimes a bit longer if grown in cooler weather). Check a tuber by gently digging at the edge of the mound—mature roots should be well-sized with firm skins. Avoid harvesting after prolonged wet weather; cure freshly dug roots immediately to improve flavor and storage life.