Yellow Summer Squash (Early Prolific Straightneck)
Cucurbita pepo 'Early Prolific Straightneck'

A classic summer squash that's been a garden staple for generations, prized for its reliability and continuous production. This variety produces smooth, bright yellow fruits with tender skin and mild, buttery flesh that's perfect for everything from grilling to baking. Its compact bush habit and early maturity make it ideal for gardeners who want fresh squash all season long.
Harvest
50-55d
Days to harvest
Sun
White-Tailed Deer
Zones
3β11
USDA hardiness
Height
1-3 feet
Planting Timeline
Showing dates for Yellow Summer Squash (Early Prolific Straightneck) in USDA Zone 7
All Zone 7 squash βZone Map
Click a state to update dates
Yellow Summer Squash (Early Prolific Straightneck) Β· Zones 3β11
Growing Details
Zone-by-Zone Planting Calendar
| Zone | Indoor Start | Transplant | Direct Sow | Harvest |
|---|---|---|---|---|
| Zone 3 | β | β | June β July | August β October |
| Zone 4 | β | β | June β July | August β October |
| Zone 5 | β | β | May β June | August β September |
| Zone 6 | β | β | May β June | July β September |
| Zone 7 | β | β | April β June | July β August |
| Zone 8 | β | β | April β May | June β August |
| Zone 9 | β | β | March β April | May β July |
| Zone 10 | β | β | February β April | May β June |
Complete Growing Guide
Light: White-Tailed Deer. Soil: High Organic Matter, Loam (Silt). Soil pH: Neutral (6.0-8.0). Drainage: Good Drainage, Moist. Height: 1 ft. 0 in. - 3 ft. 0 in.. Spread: 2 ft. 0 in. - 25 ft. 0 in.. Spacing: 12 inches-3 feet. Growth rate: Rapid. Maintenance: var. CylindricaZucchini Squash, var. Cylindrica. Propagation: Seed. Regions: Coastal, Mountains, Piedmont.
Harvesting
A type of berry called a pepo that has a hard rind. Fruits may be long or round, large or small, smooth or wartyβ some have edible flesh and some are too hard or insipid to eat, though the seeds of all are edible. Has a harder, thicker stem compared to other species.
Color: Black, Cream/Tan, Gold/Yellow, Green, Orange, Pink, Red/Burgundy, Variegated, White. Type: Berry. Length: > 3 inches. Width: > 3 inches.
Garden value: Edible, Showy
Harvest time: Fall
Bloom time: Summer
Storage & Preservation
Fresh Early Prolific Straightneck keeps best stored unwashed in the refrigerator crisper drawer for 4-7 days. For counter storage, use within 2-3 days and keep in a cool, dry location away from direct sunlight. Don't store in plastic bags, as trapped moisture promotes rot.
For longer-term preservation, slice into rounds or chunks and blanch for 3 minutes before freezing in airtight containers β this maintains texture better than freezing raw. Grated raw squash freezes well for use in baked goods like muffins or bread. You can also pickle sliced yellow squash using standard cucumber pickling recipes, or dehydrate thin slices at 125Β°F until crisp for healthy chips. Pressure canning cubed squash is another option, though the texture becomes softer and works best in soups or casseroles.
History & Origin
Origin: North America
Advantages
- +Fast-growing
Companion Plants
Plant Together
Radishes
Deter squash vine borers and cucumber beetles, mature before squash spreads
Corn
Provides vertical structure and shade, part of traditional Three Sisters planting
Beans
Fix nitrogen in soil for heavy-feeding squash, complete Three Sisters guild
Catnip
Strongly repels squash bugs, cucumber beetles, and flea beetles
Dill
Attracts beneficial insects like parasitic wasps that control squash pests
Oregano
Repels cucumber beetles and provides ground cover to retain soil moisture
Nasturtiums
Trap crop for squash bugs and cucumber beetles, repels aphids
Marigolds
Repel cucumber beetles, squash bugs, and nematodes with natural compounds
Keep Apart
Potatoes
Compete for space and nutrients, both are heavy feeders with similar root zones
Fennel
Allelopathic compounds inhibit growth of squash and most vegetables
Aromatic herbs (strong)
Sage and rosemary can stunt squash growth through chemical interactions
Nutrition Facts
Per 100g serving. % Daily Value based on 2,000 calorie diet. Source: USDA FoodData Central (FDC #168040)
Pests & Disease Resistance
Resistance
Good resistance to powdery mildew and mosaic virus
Common Pests
Squash bugs, cucumber beetles, vine borers, aphids
Diseases
Powdery mildew, downy mildew, bacterial wilt, mosaic virus
Frequently Asked Questions
How long does Early Prolific Straightneck squash take to grow?βΌ
Can you grow Early Prolific Straightneck squash in containers?βΌ
Is Early Prolific Straightneck good for beginners?βΌ
What does Early Prolific Straightneck taste like compared to zucchini?βΌ
When should I plant Early Prolific Straightneck squash seeds?βΌ
How do you know when Early Prolific Straightneck is ready to pick?βΌ
Growing Guides from Wind River Greens
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