Squash Seeds – Waltham Butternut

Grow your own delicious, sweet and nutty butternut squash with Waltham Butternut squash seeds! This popular, reliable variety produces attractive, pear-shaped fruits with a smooth, tan-coloured skin and rich orange flesh. Known for its excellent flavour and versatility in the kitchen, Waltham Butternut is a fantastic choice for gardeners looking to grow their own homegrown squash for autumn and winter meals.

Perfect for vegetable gardens, allotments and larger growing spaces, Waltham Butternut squash is a rewarding crop for gardeners who enjoy growing their own food. The fruits are delicious roasted, mashed, added to soups and stews, or used in a wide range of seasonal recipes. With the right growing conditions and a warm, sunny position, this productive variety can provide a satisfying harvest of flavourful squash to enjoy at home.

Why Grow Waltham Butternut Squash?

• Delicious flavour: Produces sweet, nutty orange flesh that is perfect for a variety of dishes.

• Attractive fruits: Develops distinctive pear-shaped squash with smooth, tan-coloured skin.

• Versatile in the kitchen: Ideal for roasting, soups, curries, mashing and baking.

• Excellent for home growing: A rewarding variety for vegetable gardens and allotments.

• Great for autumn meals: Enjoy freshly harvested squash in warming seasonal recipes.

• Stores well when properly matured: Fully ripened, undamaged fruits can be stored for use over the coming months under suitable conditions.

How to Grow Waltham Butternut Squash

Sow indoors from April to May for an early start, or outdoors in June once the weather has warmed and the risk of frost has passed. Butternut squash is a tender crop that needs warmth to germinate and grow successfully.

Choose a warm, sunny and sheltered position with fertile, well-drained soil. Squash plants need plenty of space to spread their trailing stems, so allow room for growth or guide the vines carefully around your growing area.

Sow individual seeds approximately 2–3 cm deep in pots of good-quality seed compost, placing each seed on its edge. Keep the compost moist and maintain a temperature of around 18–25°C for reliable germination. Grow seedlings in good light and protect them from cold conditions.

Harden off indoor-grown seedlings gradually before planting them outside once all risk of frost has passed. Ensure night-time temperatures are consistently above approximately 10°C, as cold conditions can damage young plants and slow their growth.

You can sow seeds directly outdoors in June when the soil is warm and night-time temperatures remain above 10°C. Sow two seeds per planting position and thin to the strongest seedling once established, if both germinate.

Water regularly, particularly during dry spells and while the fruits are developing. Water around the base of the plant rather than over the leaves, and use mulch to help retain soil moisture.

Grow in fertile soil enriched with well-rotted organic matter. Once plants begin flowering and setting fruit, a suitable vegetable fertiliser can help support healthy growth and fruit development.

Waltham Butternut Squash Growing Guide

Growing times are approximate and will vary according to weather, soil conditions and sowing dates.

When to Harvest Waltham Butternut Squash

Waltham Butternut squash is generally ready to harvest from September to October, before the first autumn frosts. The fruits should have developed their characteristic tan skin, and the stems will usually begin to dry and harden as the squash matures.

Cut the fruits from the plant using clean secateurs or a sharp knife, leaving a short section of stem attached. Handle them carefully to avoid damaging the skin, as bruised or damaged fruits are less suitable for long-term storage.

If the weather is dry and conditions allow, curing mature squash in a warm, well-ventilated place for around 7–14 days can help toughen the skin and improve storage potential. Store sound, fully matured fruits in a cool, dry, frost-free and well-ventilated location.

Start growing your own delicious butternut squash with Waltham Butternut squash seeds from Warne’s Seeds, a fantastic choice for gardeners who want to enjoy homegrown vegetables, seasonal cooking and the satisfaction of harvesting their own food.