Cucumber

Crisp and refreshing. Cucumbers thrive with warmth and consistent moisture — excellent in a grow bag or greenhouse.

Sprouting this month

First sprouts in 5–7 days

Sow

Mar – May

Plant Out

May – Jun

Harvest

Jul – Sep

Type

Both

Difficulty

Growing Calendar

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sow

Transplant

Harvest

This month: Apr

Start seeds indoors this week

•Fill tray with compost
•Sow seeds evenly
•Cover lightly with soil
•Water gently
•Place in warm light spot

Sowing Guide

What you'd find on the seed packet

Sow Depth

2cm

Spacing

45cm

Germination

5–7days

Thinning

Sow one seed per pot — no thinning needed

Grower's Note

Sow seeds on their side to prevent the tip rotting. Needs consistent warmth above 18°C to germinate well.

Growing Stages

Approximate weeks from sowing to harvest

Sprouting

1wks

Seeds germinate and first leaves emerge. Keep warm and moist.

Establishing

4wks

Root system develops and plant builds structure. Pot on if needed.

Maturing

8wks

Plant reaches full size and begins producing. Harvest at peak.

Total~13 weeksfrom seed to harvest

Companion Plants

BeansNasturtiumSunflowerMarigoldChives

Climate Control

Today

—C

Humidity

—%

Water

Daily

Sunlight

6+ hours direct sun

Watch Out For

! Powdery mildew in late summer — improve airflow
! Red spider mite in hot, dry conditions
! Cold nights below 10°C will check growth severely

What You'll Need

Equipment for growing cucumber

Modular Seed Tray

96-cell for precision sowing

Fine Rose Watering Can

Gentle shower for seedlings

Bamboo Canes

Pack of 20 × 120cm

Affiliate links — we may earn a small commission

Just Seed Shropshire Seaweed

Grown Organically

Every method in this guide works with natural systems — no synthetic chemicals, no shortcuts.

Read our approach

Related Crops

Tomato

Active

Rich, sun-ripened fruits packed with flavour. Start indoors for a long and rewarding season.

Lettuce

Active

Fast-growing and versatile. Sow every two weeks for a continuous harvest all season.

Peas

Sweet and tender straight from the pod. Easy to grow with the right support in place.

Kale

Active

Hardy and nutritious. Flavour improves after the first frost — a winter staple.

Cucumber

Growing Calendar

Sowing Guide

Growing Stages

Companion Plants

Climate Control

Watch Out For

What You'll Need

Related Crops

Tomato

Lettuce

Peas

Kale

Seasonal Updates