How to Grow Courgettes


  • Sowing Instructions
  • How to Transplant
  • Crop Maintenance
  • How to Harvest
  • Storage
  • Pests & Diseases

Sowing Instructions

  • Sowing Time: Mid spring. Important that seeds are kept warm
  • Sowing Location: Indoors, under cover & grow in greenhouse
  • Sow in 9cm pots, sowing 1 seed per pot, soaking compost
  • Sow seeds 2cm deep, placing seed vertically in compost
  • Place pots in a heated propagator, setting to 21°C
  • Keep pots moist at all times


  • Harden of your courgettes by acclimatising to the cold by leaving outside for a few hours a day
  • Transplant young seedlings into greenhouse soil
  • Space 90cm apart
  • Dig a planting hole about a foot square and fill it with compost or rotted manure
  • Create a soil mound around the base of each transplanted plant
  • Can be grown in grow bags. Grow 2 per grow bag
  • Soil: Courgettes like well drained and very fertile soil
  • Improve the soil by digging in some compost or manure
  • When preparing soil, it is recommended that you add a general fertiliser such as growmore or poultry manure

Crop Maintenance

  • Don’t over water until courgettes begin to grow
  • Once outside courgettes are easy to grow, remember to keep watered once growing
  • Adding a liquid feed will encourage further growth
  • Support by training up a bamboo cane
  • Protect from slugs

How to Harvest

  • Harvest courgettes 3 times a week to keep up production
  • Pick of courgettes when they are 10-15cm long
  • Use a sharp knife to cut off fruit, never break off with your hands


  • Courgettes should be covered and placed in the fridge for up to two days
  • To freeze courgettes slice into rounds and blanch for 2 minutes
  • Place into ice cold water for a further 3 minutes
  • In the freezer courgettes can keep for up to 12 months

Pests & Diseases

  • Courgettes are normally very healthy plants
  • Pests: Slugs
  • Damage: Slugs destroy seedlings by eating them
  • Signs: Leaves will have ragged edges
  • Protection: Slug traps or copper slug tape


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