Cucumber

Cucumbers in Liverpool

Cucumis sativus

A tender climbing vine grown for its crisp fruits, requiring warm conditions and consistent moisture. In the UK, greenhouse varieties yield earlier and longer, while outdoor ridge types are hardier but need a warm summer.

Height200cm
SunlightFull Shade
WaterHigh Water

Growing Guide

Step-by-step instructions for growing Cucumber

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Growing Guide for

Change the guide to see different planting timelines and tips.

Grow cucumbers outdoors in a warm, sheltered spot. Let plants sprawl naturally and do not pinch flowers, as they need bee pollination.

1
Sow Seeds Indoors

21 Mar - 28 Mar

Sow seeds on their edge to a depth of in modules from 21st March - 28th March. Keep them at on a warm windowsill or in a propagator. Sow no earlier than this to avoid leggy, root-bound seedlings.

2
Harden Off Seedlings

11 Apr - 25 Apr

Gradually acclimatise seedlings to outdoor conditions over 15 days from 11th April - 25th April. Place them outside in a sheltered spot during the day, bringing them in at night. This toughens them up before transplanting.

3
Transplant Outdoors

25 Apr - 9 May

Plant out into a warm, sunny bed after the last frost from 25th April - 9th May. Space plants apart on slight mounds to improve drainage. Use cloches or fleece for extra protection if nights are cool.

4
Let Plants Sprawl

9 May - 16 May

Allow plants to spread naturally across the ground or over a low frame. Do not pinch out flowers, as outdoor varieties need bee pollination to set fruit. Mulch around plants to suppress weeds and retain moisture.

5
Water and Feed Regularly

21 Oct - 2 May
every 2 weeks

Water deeply at the base to keep soil moist from 21st October, avoiding wetting the leaves to reduce mildew risk. Feed with a balanced liquid fertiliser every 14 days once flowering begins to support fruit development.

6
Harvest Cucumbers

21 Oct - 1 Jul

Pick fruits regularly when they reach a usable size from 21st October - 1st July. Cut them from the vine with a knife, harvesting every few days to encourage continuous production. Outdoor varieties may have a shorter season, so pick promptly.

Companion Plants

Plants that grow well (or poorly) with Cucumber

Why Companion Planting Matters

Companion planting can help deter pests, improve pollination, enhance growth, and maximize garden space. Some plants release chemicals that repel pests or attract beneficial insects, while others can improve soil quality or provide shade for sensitive plants.

Suggested Varieties

Popular varieties of Cucumber to consider

Marketmore

A reliable outdoor ridge cucumber with good disease resistance, producing dark green fruits ideal for slicing.

Carmen

A popular greenhouse variety that is parthenocarpic, yielding long, smooth fruits without pollination.

Crystal Apple

An heirloom outdoor type with round, pale yellow fruits and a mild flavour, suitable for cooler summers.