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Pattypan Squash
Beginner

Pattypan Squash

Cucurbita pepo

Family: Cucurbitaceae

Pattypan squash, also called scallop squash, is a charming summer squash with a distinctive flying saucer shape. Best harvested young when tender, it has a mild, buttery flavor. Available in white, yellow, and green varieties.

Days to Harvest

45-55 days

Sun Needs

Full Sun (6-8+ hours)

Water Needs

high

Germination Temp

85°F optimal

Seed Starting

Start Indoors

3 weeks before last frost

Germination

4-10 days

Seed Depth

1 inch

Light to Germinate

No

💡 Tip: Direct sow preferred.

Growing Conditions

Soil Type

Rich, well-draining soil

pH Range

6 - 7.5

Spacing

3 feet between plants (bush type)

Companion Plants
CornBeansMarigolds

⚠️ Avoid planting near:

Potatoes
History & Nutrition

History

Pattypan squash, with its whimsical flying-saucer shape and scalloped edges, represents one of the oldest and most distinctive cultivated squash forms, documented in European herbals as early as the 16th century after seeds arrived from the Americas. Native Americans cultivated similar scallop-edged squash for centuries before European contact, and the variety quickly became popular in colonial American gardens. Thomas Jefferson famously grew "cymlings" (an old name for pattypan) at Monticello and considered them among his favorite vegetables. The name "pattypan" derives from a type of small pan used for baking pastries and pies in colonial kitchens—the squash's fluted edges resembled the crimped edges of pie pans. Alternative names include scallop squash, cymling, custard marrow, and sunburst squash (specifically for yellow varieties). The French call it "pâtisson" and prize the baby specimens, while Italians know it as "zucchina centenaria." Pattypan's unique shape is not just decorative—it creates a perfect vessel for stuffing and allows the squash to cook evenly when grilled or roasted whole. Baby pattypans, harvested at 2-3 inches across, are tender enough to eat raw, while larger ones require cooking. The variety had somewhat fallen out of fashion by the late 20th century, overshadowed by zucchini's ubiquity, but farmers' markets and restaurant interest in heirloom varieties have sparked a revival. Modern breeding has expanded the color palette from the original white to include yellow (Sunburst), green (Peter Pan), and even bicolored varieties, making pattypan as visually appealing as it is delicious.

Nutritional Benefits

  • Low in calories
  • Good source of Vitamin C
  • Contains manganese
Climate & Temperature

Optimal Growing Temp

65°F - 85°F

Pattypan thrives in warm temperatures between 65-85°F. Growth slows below 60°F. Compact bush habit makes it ideal for containers and small spaces.

Survival Range

50°F - 95°F

Can survive these temperatures

tender
warm Season

Frost Note: Killed by any frost. Plant only after all frost danger has passed and soil has warmed to at least 60°F.

Best USDA Zones

Zone 3Zone 4Zone 5Zone 6Zone 7Zone 8Zone 9Zone 10

Humidity

50-70%

Moderate humidity is ideal. Good air circulation prevents powdery mildew and other diseases.

Plant Size & Growth

Height

18-24 inches

Spread

3-4 feet

Growth Habit

bush

annualRoot Depth: Moderate root system extending 18-24 inches. Compact bush habit.
Growth Stages

Germination

5-10 days

Seed coat splits, cotyledons emerge and unfold, hypocotyl straightens. Faster in warm soil (85°F optimal).

Seedling Stage

Duration: 2-3 weeks

True leaves: First true leaves are rounded with scalloped edges, appearing after cotyledons

Transplant ready: Ready to transplant when 2-3 true leaves developed and roots fill cell.

Vegetative Growth

Duration: 3-4 weeks

Compact bush develops with large lobed leaves. Root system establishes.

Flowering

Timing: 4-6 weeks after planting

Duration: Continuous once started

Requires bee pollination. Male flowers appear first, female flowers have tiny scalloped fruit at base.

Fruit Development

Begins: 2-4 days after successful pollination

Duration: Continuous throughout summer

Fruit develops distinctive flying saucer shape with scalloped edges very quickly.

Harvest Maturity

Timing: 45-60 days from seed

  • Glossy skin
  • Firm texture
  • Best harvested young (2-4 inches)
  • Scalloped edges defined but tender
  • Can press fingernail into skin
Expected Yield

Per Plant

10-20+ squash per plant

Per Square Foot

3-5 lbs over season

Harvest Frequency

Every 1-2 days during peak production

Factors Affecting Yield

  • Pollination success
  • Harvest frequency—picking encourages more production
  • Growing season length
  • Consistent watering
Watering Guide

Seedling Stage

Keep consistently moist, water daily if needed

Established Plants

1-2 inches per week through deep watering

During Fruiting

Maintain consistent moisture for continuous production

Preferred Method

Drip irrigation or soaker hose at soil level. Avoid overhead watering.

⚠️ Critical Watering Periods

  • Flowering and fruit set
  • Continuous harvest period

Pro Tips

  • Water at base of plant to avoid wet foliage
  • Morning watering allows leaves to dry before evening
  • Mulch to retain moisture and reduce disease
  • Consistent watering prevents bitter fruit
  • Pattypan is less drought-tolerant than winter squash
Fertilizing Guide
moderate feederRecommended: Balanced 10-10-10 throughout growing season

Feeding Schedule

Pre-planting

Compost and balanced organic fertilizer

Once at soil preparation

Early growth

Balanced fertilizer (10-10-10)

Every 2-3 weeks

Flowering/Fruiting

Balanced to low-nitrogen fertilizer

Every 2-3 weeks

Organic Options

Well-aged compostFish emulsionBalanced organic fertilizerWorm castings

Side-dress with compost monthly. Continuous production requires continued feeding.

Container Growing
✓ Suitable for containers

Minimum Size

10 gallon minimum

Recommended Size

15 gallons for best results

Depth Required

At least 10 inches deep

Best Varieties for Containers

White ScallopPeter PanSunburst

Container Tips

  • Bush habit makes pattypan excellent for containers
  • Choose the most compact varieties
  • Water daily in hot weather
  • Expect slightly reduced yields
  • Single plant per container is usually best
Support & Trellising
Support Optional

Support Type

Not needed—compact bush habit

Height Needed

N/A

When to Install

N/A

Method

Pattypan does not require trellising due to compact bush habit. May need support if heavily loaded with fruit.

Tips

  • Trellising is not recommended or needed
  • Bush habit naturally stays compact
  • Support heavy-laden branches with stakes if needed
✂️
Pruning Guide
Pruning Optional

Why Prune

Better air circulationEasier harvest accessDisease prevention

When

Throughout growing season as needed

How Often

As needed throughout season

Technique

Remove lower leaves that touch soil and any diseased foliage. Pick fruit frequently.

Remove

  • Dead or yellowing leaves
  • Foliage touching soil
  • Diseased leaves
  • Spent flowers

Keep

  • Healthy foliage
  • Developing flowers and fruit
  • Main plant structure
Succession Planting

Plant Every

2-3 weeks

Sowings/Season

2-3 plantings

Duration

Extends harvest from early summer through fall

Tips

  • Make 2-3 successive plantings for extended harvest
  • First plants often decline by late summer
  • New plantings provide fresh production into fall
  • Later plantings often avoid early-season vine borers
Frequently Asked Questions

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