Growing Butternut Squash In The UK

Last Updated on April 3, 2024 by Real Men Sow

Growing butternut squash should start late in April or early May under shade. It’s best to sow them in greenhouses, windowsills indoors, or conservatories. They are the kind to not tolerate frost, therefore, they need to be under the covers.

Butternut Squash

Start Growing Butternut Squash Indoors

Giving them a 4 to 5 weeks indoors would give them a head start. One seed should be enough to sow in a 12cm pot. Avoid over-watering at sowing, wet and airless compost would only cause the seed to rot. Allow the compost to dry a little before watering, but never delay watering.

Planting Out Butternut Squash

You’ll have to harden off the seedlings towards the end of May or early June before planting them out. You could prepare the planting site by digging in lots of compost or manure. Set the plant on a slight mound, the root ball should be 2cm out of the soil. A little moat should be created around the mount for watering. You can use a light can to secure your plant if it’s a bit floppy. 

Tips for Growing Squash

  1. The plants that have grown 60cm long should be trimmed back to help the plant focus its energy to produce flowers and fruits. 
  2. It’s best to encourage pollinators by planting those that attract them near your vegetable garden. You’ll have your yield increased due to them.
  3. Keep them off the ground by using bricks, tiles, or even polythene to stop soil-borne pests or fungal diseases that damage tender fruits.

Harvesting Squashes

Summer squashes are harvested when they’re still small to keep them full of flavor. Use a clean  and sharp pair of scissors or secateurs to snip their stem. 

Store Butternut Squashes In The Winter

Winter squashes are intended to be stored over winter. You’ll have to allow the fruit to fully mature before harvesting it when the foliage has died down. Harvest the fruit before the first frost. Butternut Squash has a long shelf life, making them good for storing overwinter.

Real Men Sow
Real Men Sow

Hello, I’m Pete and I’m currently based in the west of Scotland, in a small place called Rosneath, where I’m exploring my garden adventures. I personally started gardening around 6 years ago and initially, I started out by growing my favorite fruits and berries, such as strawberries, Raspberries & Gooseberries. Since then I’ve added a lot of vegetables and working closely with my neighbor, it’s been a lot of fun.