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Gem Squash

Cucurbita pepo var. gemmifera

A unique South African heirloom that produces small, round squashes perfect for individual servings and container growing. These charming little squashes start cream-colored and develop beautiful golden-yellow skin at maturity, with sweet, tender flesh that's delicious when simply steamed or roasted whole. Gem squash is prized for its compact size, attractive appearance, and excellent storage capabilities.

Harvest

70-85d

Days to harvest

📅

Sun

White-Tailed Deer

☀️

Zones

3–11

USDA hardiness

🗺️

Height

1-3 feet

📏

Planting Timeline

Zone:

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct Sow

Harvest

Direct Sow

Harvest

Showing dates for Gem Squash in USDA Zone 7

All Zone 7 squash →

Zone Map

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Gem Squash · Zones 3–11

What grows well in Zone 7? →

Growing Details

Difficulty

Easy

Spacing36-48 inches

SoilWell-drained soil with moderate fertility

pH6.0-7.0

Water1 inch per week, moderate water needs

SeasonWarm season

FlavorSweet, mild, and creamy with tender texture

ColorCream to golden-yellow exterior, pale yellow flesh

Size2-4 inches diameter, 4-8 ounces

Zone-by-Zone Planting Calendar

Zone	Indoor Start	Transplant	Direct Sow	Harvest
Zone 3	—	—	June – July	September – October
Zone 4	—	—	June – July	September – October
Zone 5	—	—	May – June	September – October
Zone 6	—	—	May – June	August – October
Zone 7	—	—	April – June	August – September
Zone 8	—	—	April – May	July – September
Zone 9	—	—	March – April	June – August
Zone 10	—	—	February – April	June – July

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 warty– 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 gem squash stores exceptionally well at room temperature for 2-3 months when properly cured. After harvest, place squash in a warm (80-85°F), well-ventilated area for 7-10 days to harden the skin, then move to a cool (50-55°F), dry location for long-term storage.

For immediate use, refrigerate unwashed squash for up to 3 weeks in the crisper drawer. Once cut, wrap tightly and use within 5 days. Gem squash freezes beautifully – simply halve, scoop out seeds, and freeze raw in freezer bags for up to 8 months. The compact size makes them perfect for blanching and freezing whole for individual portions.

Pickle young, tender gem squash using standard cucumber pickle recipes, or roast mature specimens and puree the flesh for soups and baked goods. The sweet flesh also dehydrates well when sliced thin and dried at 135°F.

History & Origin

Origin: North America

Advantages

+Fast-growing

Companion Plants

Plant Together

Nasturtiums

Acts as trap crop for squash bugs and cucumber beetles, repels aphids

Marigolds

Repels cucumber beetles, squash bugs, and nematodes with strong scent

Radishes

Deters squash vine borers and cucumber beetles, breaks up soil

Corn

Provides natural trellis support and creates beneficial microclimate

Beans

Fixes nitrogen in soil, part of traditional Three Sisters planting

Catnip

Strongly repels squash bugs, cucumber beetles, and aphids

Tansy

Repels cucumber beetles, squash bugs, and ants with potent oils

Dill

Attracts beneficial predatory insects that control squash pests

Keep Apart

Potatoes

Compete for space and nutrients, both are heavy feeders with similar root zones

Aromatic herbs

Strong herbs like sage and rosemary can inhibit squash growth and flavor

Fennel

Allelopathic properties inhibit growth of most vegetables including squash

Nutrition Facts

Calories

26kcal(1%)

Protein

0.52g(1%)

Carbs

5.64g(2%)

Fat

0.2g(0%)

Vitamin C

4.5mg(5%)

Iron

0.17mg(1%)

Calcium

9mg(1%)

Potassium

205mg(4%)

Per 100g serving. % Daily Value based on 2,000 calorie diet. Source: USDA FoodData Central (FDC #168040)

Pests & Disease Resistance

Resistance

Good resistance to common squash diseases

Common Pests

Squash bugs, cucumber beetles, aphids

Diseases

Powdery mildew, bacterial wilt

Frequently Asked Questions

How long does gem squash take to grow?▼

Gem squash typically takes 70-85 days from seed to harvest. Young, tender squash can be harvested at 60-65 days for immediate fresh eating, while fully mature squash for storage needs the full 80-85 days to develop proper skin hardness and peak flavor.

Can you grow gem squash in containers?▼

Yes, gem squash is excellent for container growing. Use a minimum 20-gallon container with drainage holes and high-quality potting mix. The compact 3-4 foot plants stay manageable unlike sprawling winter squash varieties, making them ideal for patios and small spaces.

What does gem squash taste like?▼

Gem squash has sweet, mild flavor with creamy, tender flesh similar to delicata or acorn squash but more delicate. Young squash taste almost like summer squash, while mature specimens develop nuttier, richer flavor with fine-textured flesh perfect for roasting whole.

When should I plant gem squash?▼

Plant gem squash after soil reaches 65°F and nighttime temperatures stay above 50°F consistently – typically late May in zones 5-6, early to mid-May in zones 7-8. For extended harvest, succession plant every 2-3 weeks through mid to late July.

Is gem squash good for beginners?▼

Yes, gem squash is excellent for beginning gardeners. It's more forgiving than large winter squash, takes up less space, resists common diseases well, and the compact plants are easier to manage. The quick 70-day harvest provides faster gratification than slower-maturing storage varieties.

How do you know when gem squash is ripe?▼

Gem squash is ripe when it turns golden-yellow (from cream-colored) and reaches tennis ball size. The skin should resist thumbnail pressure but not feel rock-hard. For storage, wait until the stem attachment begins drying and shrinking.