Cucurbita pepo

RHS Plant Profile
marrow

Other common names

autumn pumpkin, autumn squash, common gourd, courgette, field pumpkin, melon pumpkin, pomion, pumpkin, summer pumpkin, summer squash, vegetable spaghetti, winter squash, yellow-flowered gourd, zucchini, vegetable marrow

Plants for pollinators
Annual Biennial

This is the original parent plant, from which many cultivars of courgette, summer and winter squash, pumpkins and gourds have been bred. The tender annual plants can be trailing or bushy. They have yellow flowers and both male and female flowers are born on the same plant, the female flowers have a small immature fruit behind the flower. Fruit can be green like courgettes, cream, yellow or orange like pumpkins

Position

Full sun

Soil Types

Chalk, Clay, Loam, Sand

Max Height

1-1.5 metres

Max Spread

1-1.5 metres

Size

Time to Maturity
1 year
Max Spread
1-1.5 metres
Max Height
1-1.5 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained or Well–drained
pH
Acid or Alkaline 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
Bushy, Climbing
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 rich, fertile, well drained soil in full sun. Start indoors from mid-late April, sowing in individual pots about 1.5cm deep. Harden off before June then transplant outdoors to final growing position. Keep well-watered throughout the growing season and feed every 10-14 days once fruits start to form. See courgette cultivation for further advice

Propagation

Propagate by seed. See sowing vegetable seeds or sowing seeds indoors for further advice

Suggested planting locations and garden types

  • City and courtyard gardens
  • Patio and container plants
  • Climber and wall shrubs
  • Conservatory and greenhouse
  • Flower borders and beds

Pruning

No pruning required

Pests

May be susceptible to slugs and snails

Diseases

May be susceptible to grey mould and powdery mildews