Squash (Grandprize) Plant

The Grandprize F1 squash plant is a high-yielding hybrid that cranks out vibrant, glossy yellow fruit with unbeatable consistency and flavor. With an upright, semi-open habit and fewer spines, harvesting is quick and painless—no gloves needed. This variety matures early and produces loads of straight, smooth 6–7 inch squash, perfect for grilling, sautéing, or slicing fresh. Strong resistance to powdery mildew, watermelon mosaic virus, and zucchini yellow mosaic virus means healthier plants and more dependable harvests. Whether you're growing for market or home meals, Grandprize F1 brings big flavor and performance from the very first pick.

$14⁹⁵

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Plant Quantity

Product variants

Healthy Arrival Guarantee: If your seedlings arrive damaged, we’ll replace them. No questions asked!

Days to Harvest

Approximately 40-44 days (from transplant) for mature squash.

Plant height

18–24 inches (upright, semi-open habit)

Squash Size

6–7 inches long, glossy deep yellow, straightneck fruits

Hybrid or Heirloom: Hybrid

Disease Resistance: Strong resistance to Powdery Mildew (Px), Watermelon Mosaic Virus (WMV), Papaya Ringspot Virus (PRSV), and Zucchini Yellow Mosaic Virus (ZYMV)

Cold or Heat Tolerance: Thrives in warm conditions; not frost-tolerant but performs well in moderate heat

Height at the Time of Purchase: 4-6 inches

Non-GMO: Yes, these seedlings are non-GMO.

Growth Habit: Bush habit (strong, upright, open plant structure; NOT indeterminate like tomatoes)

Estimated Quantity of Fruits: Very productive; typically 20–25 fruits per plant under good conditions