Companion Plant Guide
Basil
Attracts pollinators, pest deterrent.
Vegetable · Cucurbit family
Cucumber companion plants
Cucumis sativus
What to plant with cucumbers, what to keep apart, and how to grow them — sun, spacing, soil and the reason behind every pairing.
Photo: Lily Bui Thi on Unsplash
Overview
Growing cucumbers beside the right neighbour
Cucumber (Cucumis sativus) is a vegetable in the Cucurbit family. Vining plant that loves warmth and needs vertical support.
Ring the base with nasturtium — aphids settle there instead of on the vine.
Give plants 12–24 in in full sun. Aim for rich, well-draining, moist soil. In most gardens the crop sits in USDA zones 3-11 and is ready in about 50-70 days.
Grows well with
What to plant with cucumbers
The best companion plants for cucumbers in this guide are Basil, Bean, Radish, Nasturtium, Corn, Pea, Lettuce, Dill, and Marigold. Each pairing below is a reason to share a bed — pest masking, roots that do not compete, or insects that hunt the pests drawn to cucumbers.
Bean
Beans fix nitrogen the vine can use.
Radish
Breaks soil compaction for cucumber.
Nasturtium
Trap crop for aphids.
Corn
Tall stalks give the vines light shade and something to climb.
Pea
Nitrogen fixer that finishes before the vines take over.
Lettuce
Grows in the light shade under trellised vines.
Dill
Draws in predatory wasps and pollinators.
Marigold
Deters cucumber beetles and draws pollinators.
Cucumber is also a good companion for
Oregano — Flowers draw in pollinators and predatory insects.
Keep apart
What not to plant with cucumbers
Keep cucumbers away from Fennel and Sage. These neighbours compete for the same food, release chemicals that stunt growth, or otherwise hold the crop back.
Fennel
Inhibits cucumber growth.
Sage
Strongly aromatic herbs like sage are said to stunt cucumbers.
In the bed
How to grow cucumbers
| Sun | Full sun |
|---|---|
| Spacing | 12–24 in |
| Soil | Rich, well-draining, moist soil |
| Hardiness | Zones 3-11 |
| Days to maturity | 50-70 |
These notes sit beside the companion lists — they are how cucumber actually occupies the bed, not a substitute for local climate.
- Plant in mounds or hills for better drainage
- Provide trellis for vertical growth
- Water deeply and consistently
- Harvest frequently to encourage production
Questions
Cucumber companion planting FAQ
What can I plant next to cucumbers?
Plant Basil, Bean, Radish, Nasturtium, Corn, Pea, Lettuce, Dill, and Marigold beside cucumbers. Basil: Attracts pollinators, pest deterrent. Bean: Beans fix nitrogen the vine can use. Radish: Breaks soil compaction for cucumber. Nasturtium: Trap crop for aphids. Corn: Tall stalks give the vines light shade and something to climb. Pea: Nitrogen fixer that finishes before the vines take over. Lettuce: Grows in the light shade under trellised vines. Dill: Draws in predatory wasps and pollinators. Marigold: Deters cucumber beetles and draws pollinators.
What should I not plant with cucumbers?
Keep cucumbers apart from Fennel and Sage. Fennel: Inhibits cucumber growth. Sage: Strongly aromatic herbs like sage are said to stunt cucumbers.
How much sun do cucumber plants need?
Cucumber plants want full sun. Space them 12–24 in apart in rich, well-draining, moist soil.
How long do cucumber plants take to mature?
Most cucumber plants are ready in about 50-70 days. Cucumber grows in USDA hardiness zones 3-11.
Compare every pairing at a glance
Open the guide, pick cucumber, and see what thrives alongside it — and what quietly holds it back.
Open the pairing guide