Cucurbita moschata

RHS Plant Profile
squash

Other common names

American squash, Canada pumpkin, crookneck squash, cushaw, Japanese pie pumpkin, musk melon, pumpkin, Quaker pie pumpkin, sweet potato pumpkin, winter crookneck squash, winter squash, butternut squash

Annual Biennial

A winter squash species from which several commercial cultivars have been produced. Cylindrical fruits with a bulbous end furthest from the stalk are produced on trailing vines in excess of 4m (13ft) long. The smooth hard-skinned fruits store well once ripe and are a variable pale orange with sweet, bright orange flesh. They can reach around 3.5kg (almost 8lbs) in weight

Position

Full sun

Soil Types

Loam, Sand

Max Height

0.5-1 metres

Max Spread

4-8 metres

Size

Time to Maturity
1 year
Max Spread
4-8 metres
Max Height
0.5-1 metres

Growing Conditions

Loam Sand
Moisture
Moist but well–drained or Well–drained
pH
Acid or Neutral

Position

Full sun
Aspect
South–facing or West–facing
Exposure
Sheltered
Hardiness
H2

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Cucurbitaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Trailing
Potentially harmful
Humans/Pets: If crop is bitter, don't eat or feed to pets. Wear gloves and other protective equipment when handling
Genus
A small genus of climbing or trailing, annual herbaceous fruits. Several edible species are cultivated for food and other uses. Native to Central and South America. Solitary, star-shaped flowers are usually golden-yellow. Leaves are palmately lobed, covered with tiny, prickly hairs
Name Status
Correct

How to Grow

Cultivation

Grow in fertile, moisture retentive but well drained, acidic to neutral soil in full sun. Sow indoors March to May in good quality seed compost. Sow the seeds on their side 1cm deep and maintain a constant temperature of 18-21C. Feed regularly with a high potassium fertiliser when the first fruits start to swell. See squash cultivation for more advice

Propagation

Propagate by seed. See sowing vegetable seeds

Suggested planting locations and garden types

  • Patio and container plants

Pruning

No pruning required

Pests

Generally pest-free

Diseases

May be susceptible to grey moulds and powdery mildews