South Anna Butternut Squash Seeds, Open-Pollinated Variety for Humid Summers

A rare Virginia open-pollinated butternut with outstanding disease resistance and the vine-borer resistant moschata stems we build our catalog around.

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South Anna Butternut is a modern Virginia open-pollinated variety with serious resistance genetics, developed specifically to hold up against the diseases and pests that plague butternut in the humid Mid-Atlantic. It's not in many U.S. catalogs, and that's a shame because it's one of the toughest butternuts you can plant on Kansas soil.

The fruit is a classic butternut shape with deeper orange flesh, richer flavor, and noticeably better storage than the Waltham standard. If you've grown butternut before and been disappointed by bland flesh or disease losses, South Anna is the upgrade.

Like everything in our catalog, it's Cucurbita moschata , which means vine borer resistance is built into the genetics . The thick fibrous stems block SVB larvae. In Kansas, where vine borer pressure peaks June through July, moschata is the difference between harvest and heartbreak. Vine borer resistance is kind of our thing at Autumn Prairie Pumpkins, and South Anna fits right in.

Variety Details

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Species: Cucurbita moschata , modern open-pollinated variety

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Origin: Virginia (modern open-pollinated variety)

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Fruit size: Classic butternut, 4–6 lbs

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Flesh: Deep orange, dense, sweet, rich flavor

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Days to maturity: 100 to 110 days

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Storage: 4–6 months cured

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Vine borer resistance: High, thick-stemmed moschata genetics

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Disease resistance: Excellent, bred for Mid-Atlantic pressure

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Rarity: Uncommon in U.S. seed catalogs

In the Kansas Garden

Full sun, well-draining soil, 6–10 feet of space per plant. Direct sow after soil hits 65°F or transplant 3–4 weeks before last frost in Zone 6b. South Anna handles humidity and heat well and keeps producing late into the season. Mulch heavy and rotate cucurbits yearly.

Read the full for planting dates, spacing, and curing tips.

Why Autumn Prairie Pumpkins

We're a small Kansas seed operation that built its whole catalog around vine borer resistance . Every variety we sell is hand-selected, hand-packed, and shipped from Newton, Kansas. Strong soil builds strong plants, and the right variety makes the whole job easier.