Butternut Squashes in Paul

Cucurbita moschata

Butternut Squash
Butternut Squash · Cucurbita moschata

Grow butternut squash in a warm, sunny, sheltered spot in rich, moisture-retentive soil. In the UK it needs a long, frost-free season, regular watering in dry spells, and fruit left to ripen fully before the first frost.

50 cm · Full Sun · High Water

Calibrated to Paul · last frost ≈ 23 Mar

Sow indoors March, plant out April, harvest November to December. Frost risk December to March.
ActivityJanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember
Sow indoorsNoNoYesNoNoNoNoNoNoNoNoNo
Plant outNoNoNoYesNoNoNoNoNoNoNoNo
HarvestNoNoNoNoNoNoNoNoNoNoYesYes

Growing guide

Step-by-step instructions for growing Butternut Squash

  1. 01

    Sow seeds indoors

    2 Mar to 9 Mar

    Sow seeds on their edge around 2nd March - 9th March, about deep in small pots. Keep them at and do not sow too early, as seedlings go root-bound quickly in poor light.

  2. 02

    Pot on seedlings

    19 Mar to 2 Apr

    Move seedlings on once they have their first true leaves, from 19th March. Handle them by the leaves, not the stem, and keep them growing on in bright light so they do not become lanky.

  3. 03

    Harden off plants

    9 Mar to 6 Apr

    Gradually acclimatise plants around 9th March - 6th April. Put them outside for a few hours at a time, then bring them back in if cold nights return, until they are ready for planting out.

  4. 04

    Plant out

    6 Apr to 13 Apr

    Set plants into rich soil or a compost-enriched mound from 6th April once frost risk has passed. Water them in thoroughly straight after planting, then give each plant plenty of room to run.

  5. 05

    Train and protect vines

    9 Apr to 7 May

    From 9th April, keep the young growth well watered and protect it with fleece or a cloche if nights turn cold. Lift developing fruit onto dry boards or tiles so they do not sit on damp soil and rot.

  6. 06

    Feed and water

    9 Apr to 2 Dec every 2 weeks

    From 9th April to 2nd December, water deeply at the base whenever the soil starts to dry. Feed every 14 days with a high-potash fertiliser once fruits begin to swell, and keep the leaves dry to limit mildew.

  7. 07

    Harvest and cure fruits

    11 Nov to 9 Dec

    Harvest from 11th November to 9th December when the skin is hard, the colour is full, and the stalk is starting to cork. Cut each squash with a short stalk attached, then cure the fruits in the sun for 10-14 days to harden the skin for storage.

Companion plants

Tap a plant to see why it works (or doesn't) with Butternut Squash.

Good companions

Plants to avoid

Why companion planting matters

Companion planting can deter pests, improve pollination, and make better use of space. Some plants confuse pests or attract beneficial insects; others improve soil or offer shade to neighbours that need it.

Suggested varieties

Popular varieties of Butternut Squash to consider

Butternut Waltham

A dependable, classic butternut with good flavour and storage potential.

Hunter

Early maturing and well suited to cooler UK summers.

Butterbush

A compact butternut type that can suit larger containers or small gardens.

Butternut Squash guides by town

See how Butternut Squash timing shifts in other towns with different frost dates.