What are the sun requirements for Cucurbita pepo 'Yellow Crookneck'?

Cucurbita pepo 'Yellow Crookneck' is yellow crookneck squash, a bush-type summer squash annual growing 18-24 inches (45-60 cm) tall and 36-48 inches (90-120 cm) wide. Bright yellow fruit 4-6 inches (10-15 cm) with a curved narrow neck and a bulbous base — the crookneck shape is the cultivar's defining trait. The skin is smooth when young, becoming bumpy to warted as the fruit matures past the harvest window. Bright yellow to golden monoecious trumpet-shaped flowers. In the gourd family (Cucurbitaceae). One of the oldest American squash types — cultivated by indigenous peoples of the southeastern US. Open-pollinated (heirloom). Monoecious: requires bee pollination. Harvest every 2-3 days at 4-6 inches (10-15 cm) when the skin is smooth and easily punctured. Overripe fruit becomes warted, tough-skinned, and seedy — and reduces new fruit set. The curved neck can trap soil and moisture in wet conditions, creating a rot point. Squash vine borer (Melittia cucurbitae), squash bugs (Anasa tristis), and powdery mildew are the primary threats. Prickly stem hairs — wear gloves. Not deer-resistant. Non-toxic (edible crop). Native. Full sun. Tender annual. Growth rate is fast.

Native Range

Heirloom cultivar. The species C. pepo is native to Mexico and the southern United States.

Suggested Uses

Grown in vegetable gardens, raised beds, and containers of at least 5 gallons (19 L). Bush type — no trellis. Harvest young (smooth skin). Open-pollinated — save seeds. Native. Non-toxic. Tender annual.

How to Identify

Identified by bright yellow fruit with a curved narrow neck and a bulbous base on a bush plant. The crookneck shape and the yellow skin distinguish this from straight-necked yellow squash and green zucchini. In Cucurbitaceae. Native.

Appearance

Size & Dimensions

Height1'6" - 2'

Width/Spread3' - 4'

Reaches mature size in approximately 1 years

Colors

Flower Colors

Foliage Colors

Fall Foliage Colors

Bloom Information

Bloom Period

~12 weeks

Summer Fall

Summer to fall (June-September). Bright yellow trumpet-shaped monoecious flowers. Requires bee pollination. Fruit 50-60 days from seed.

Detailed Descriptions

Flower Description

Bright yellow to golden, trumpet-shaped, 3-4 inches (7-10 cm); monoecious

Foliage Description

Medium to dark green with lighter veining; large, palmately lobed, 8-10 inches (20-25 cm); prickly hairs on stems and petioles

Growing Conditions

Sun Requirements

Full Sun

Requires 6-10 hours of direct sunlight daily

• Full Sun: 6+ hours of direct sunlight

• Partial Shade: 3-6 hours of direct sunlight

• Full Shade: Less than 3 hours of direct sunlight

Soil Requirements

pH Range6.0 - 7.0(Neutral)

357912

Soil Types

loam

Drainagemoist

Water & Climate

Water Needs

High

Frost Tolerance

tender

Time to Maturity

50-60 days from seed

Care & Maintenance

Care Guide

Full sun (6+ hours). Rich moist soil pH 6.0-7.0. Requires bee pollination. Harvest at 4-6 inches (10-15 cm) every 2-3 days. Overripe fruit becomes warted and reduces new production. The curved neck traps moisture — rot risk in wet conditions. Squash vine borer, squash bugs, powdery mildew. Prickly stems. Not deer-resistant. Non-toxic. Tender annual.

Pruning

Remove damaged or yellowed leaves for air circulation. No vine pruning on bush types. Harvest fruit every 2-3 days at 4-6 inches (10-15 cm). Remove lower leaves touching soil in humid conditions.

Pruning Schedule

summer