Companion Plant Guide
Basil
Attracts pollinators, pest deterrent.
Vegetable · Cucurbit family
Cucumber companion plants
Cucumis sativus
What to plant beside cucumber, what to keep apart, and how to grow it — sun, spacing, soil and the pairings used in this guide.
Photo: Lily Bui Thi on Unsplash
Overview
Growing cucumber 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 cucumber
The strongest companions for cucumber in this guide are Basil, Bean, Radish, and Nasturtium. Each pairing below is a reason to share a bed — pest masking, roots that do not compete, or insects that hunt the pests cucumber attracts.
Bean
Beans fix nitrogen the vine can use.
Radish
Breaks soil compaction for cucumber.
Nasturtium
Trap crop for aphids.
Keep apart
What not to plant with cucumber
Keep cucumber away from Fennel. These neighbours compete for the same food, release chemicals that stunt growth, or otherwise hold the crop back.
Fennel
Inhibits cucumber growth.
In the bed
How to grow cucumber
| 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 cucumber?
Plant Basil, Bean, Radish, and Nasturtium beside cucumber. Basil: Attracts pollinators, pest deterrent. Bean: Beans fix nitrogen the vine can use. Radish: Breaks soil compaction for cucumber. Nasturtium: Trap crop for aphids.
What should I not plant with cucumber?
Keep cucumber apart from Fennel. Fennel: Inhibits cucumber growth.
How much sun does cucumber need?
Cucumber wants full sun. Space plants 12–24 in apart in rich, well-draining, moist soil.
How long does cucumber take to mature?
Most cucumber crops in this guide mature in 50-70 days, in 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