How to Grow Winter Squashes


  • Sowing Instructions
  • How to Transplant
  • Crop Maintenance
  • How to Harvest

Sowing Instructions

  • Sowing Time: Winter squash are tender vegetables so grow under cover
  • Note: Butternut squash is a Winter squash
  • Squash require similar growing conditions to pumpkins
  • Sow in mid Spring, ensure frost has passed
  • Sow in 3 seeds per 9cm pot
  • Thin later to one seed per pot
  • Requires min 15 degrees to germinate - start seedlings on a heated propagator
  • Once germinated, keep underc over & ensure seedlings are in a bright, frost free location
  • Sowing Depth: Sow seeds on their sides at a depth of 3cm
  • Using potting compost, soak compost & then sow seeds

How to Transplant

  • Harden off & water well before transplanting
  • Water again after transplanting
  • Space plants 1m to 1.2m apart
  • Position a solid support frame around seedlings
  • Cover seedlings with cloche until early Summer
  • Water well
  • Location: Fertile soil, full sun with shelter from winds

Crop Maintenance

  • Squash require regular water & feeding when growing
  • Feed regularly, mulch around base of plants to keep moist
  • Train shoots to grow around support frame
  • Place a water bottle into the soil close to plant's roots for ease of watering
  • Protect seedlings from slugs

How to Harvest

  • Harvest from Late August onwards
  • Fruits need to ripen on the plant before harvesting
  • Wait until fruits have turned yellow before harvesting

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