Squash
50-55days to harvest
7-10days to germinate
Z3–11USDA zones
Easydifficulty
Heirloom

Sowing

Direct sow after soil reaches 65°F, or start indoors 2-3 weeks before last frost. Plant seeds 1 inch deep.

Cultivation

Sun
Full sun (6+ hours)
Water
1-2 inches per week, deep watering
Soil
Rich, well-drained loam with compost
Soil pH
6.0-7.5
Spacing
36-48 inches
Height
1-3 feet
Season
Warm season

Appearance & flavour

Colour
Mottled grey-green with darker stripes
Size
6-8 inches long, 2-3 inches diameter
Shape
Cylindrical, slightly tapered
Flavour
Mild, sweet, and tender with fine texture

In the kitchen

Excellent grilled, sautéed, in breads, soups, and casseroles. Great for stuffing when larger.

Pests, disease & resistance

Pests
Squash bugs, cucumber beetles, vine borers
Diseases
Powdery mildew, bacterial wilt, downy mildew
Resistance
Moderate resistance to common squash diseases

Planting calendar by USDA zone

ZoneStart indoorsTransplantDirect sowHarvest
1——July – AugustSeptember – August
2——June – AugustSeptember
3——June – JulyAugust – October
4——June – JulyAugust – October
5——May – JuneAugust – September
6——May – JuneJuly – September
7——April – JuneJuly – August
8——April – MayJune – August
9——March – AprilMay – July
10——February – AprilMay – June
11——January – MarchApril – May
12——January – MarchApril – May
13——January – MarchApril – May

Companion planting

8 beneficial pairings indexed for this variety, 3 to avoid.

NasturtiumsActs as trap crop for squash bugs and cucumber beetles, repels aphids
MarigoldsDeters cucumber beetles, squash bugs, and nematodes with natural compounds
RadishesRepels squash vine borers and cucumber beetles, breaks up soil
BeansFixes nitrogen in soil for heavy-feeding squash, provides ground cover
CornProvides vertical structure and shade, part of Three Sisters planting
CatnipStrongly repels squash bugs, cucumber beetles, and other pests
DillAttracts beneficial insects that prey on squash pests
OreganoRepels cucumber beetles and provides general pest deterrent

Avoid

PotatoesCompetes for similar nutrients and space, may harbor similar pests
FennelInhibits growth of most vegetables including squash through allelopathy
MelonsAttracts same pests and diseases, creates overcrowding competition

Nutrition (per 100 g)

Calories (per 100 g)
21
Protein (g)
2.71
Fat (g)
0.4
Carbohydrate (g)
3.11
Fibre (g)
1.1
Vitamin A (µg)
25
Vitamin C (mg)
34.1
Vitamin B6 (mg)
0.142
Folate (µg)
20
Calcium (mg)
21
Iron (mg)
0.79
Magnesium (mg)
33
Phosphorus (mg)
93
Potassium (mg)
459
Zinc (mg)
0.83
Selenium (µg)
0.3

Where to buy seed and equipment

Some links are affiliate links. If you buy through them we may earn a commission at no extra cost to you.

Growing it? There is a full cultivation guide at the squash growing guide.

Cultivar facts compiled from public horticultural references including USDA GRIN and NC State Extension. Descriptions are original to this catalogue.

DarkGrow forum

Grown Zucchini Grey?

Post a crop report — day counts, reservoir readings, what worked. Variety-specific logs are the most useful thing on the forum.

Similar varieties

Other squash with a comparable time to harvest, so a season that suits Zucchini Grey suits these too.

Browse all 60 squash