Xiye Butternut Seeds, Heat Tolerant Storage Variety

A modern open-pollinated butternut bred for tough, unpredictable summers, vine borer resistant, heat tolerant, and still uncommon in U.S. catalogs.

🛡️ Vine borer resistance: Excellent, the solid stems of Cucurbita moschata resist the squash vine borer that kills most common pumpkins.

🌱 Free Shipping on Orders $25+, ships from Newton, Kansas.

✅ Germination Promise: if your seeds fail to germinate under proper growing conditions, contact us within one year and we will replace them or refund your purchase. See the details.

📖 Read our complete growing guide for this variety →

Xiye Butternut is a modern open-pollinated moschata, not an heirloom. It came out of a deliberate U.S. breeding project that crossed a Central American highland squash with Waltham Butternut, then selected the result over several generations for downy mildew resistance and for the ability to keep setting fruit through weather that swings hard. That is exactly the problem a Kansas summer hands you, which is why it earned a spot in this catalog. The variety is named in honor of climate activist Xiye Bastida, and it carries the Open Source Seed Initiative pledge, meaning it stays free for anyone to grow, save, and breed from.

The fruit is a classic butternut silhouette with tan skin and rich, deep orange flesh that gets sweeter in storage. It handles the brutal mid-summer stretch without losing fruit set, and cured squash will hold in a cool dry room for months.

Like every variety in our catalog, Xiye is Cucurbita moschata, which means vine borer resistance is built into the genetics. Thick fibrous stems shut out SVB larvae. In Kansas, where vine borer pressure peaks June through July and takes down pepo squash planting after planting, moschata is the difference between a real harvest and a wasted summer. Vine borer resistance is kind of our thing at Autumn Prairie Pumpkins, and Xiye earns its place on that list.