Companion Plant Guide
Tomato
Pest and disease deterrent.
Vegetable · Allium family
Garlic companion plants
Allium sativum
What to plant with garlic, what to keep apart, and how to grow it — sun, spacing, soil and the reason behind every pairing.
Photo: Surya Prakash on Unsplash
Overview
Growing garlic beside the right neighbour
Garlic (Allium sativum) is a vegetable in the Allium family. Cold-hardy bulb planted in fall for spring harvest.
Plant garlic in autumn among roses and fruit trees; it works all winter unseen.
Give plants 6–8 in in full sun. Aim for well-draining, fertile soil rich in organic matter. In most gardens the crop sits in USDA zones 3-9 and is ready in about 240 days (planted fall, harvested spring).
Grows well with
What to plant with garlic
The best companion plants for garlic in this guide are Tomato, Rose, Carrot, Beet, Cabbage, and Pepper. 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 garlic.
Rose
Pest deterrent for ornamentals.
Carrot
Good space and nutrient sharing.
Beet
Strong scent helps deter beet pests.
Cabbage
Strong scent helps hide brassicas from pests.
Pepper
Strong scent helps deter aphids.
Keep apart
What not to plant with garlic
Keep garlic away from Bean, Asparagus, and Pea. These neighbours compete for the same food, release chemicals that stunt growth, or otherwise hold the crop back.
Bean
Alliums stunt beans and slow nitrogen fixation.
Asparagus
Alliums are said to stunt asparagus crowns.
Pea
Alliums stunt peas and slow nitrogen fixation.
In the bed
How to grow garlic
| Sun | Full sun |
|---|---|
| Spacing | 6–8 in |
| Soil | Well-draining, fertile soil rich in organic matter |
| Hardiness | Zones 3-9 |
| Days to maturity | 240 (planted fall, harvested spring) |
These notes sit beside the companion lists — they are how garlic actually occupies the bed, not a substitute for local climate.
- Plant in fall for best results
- Mulch heavily over winter
- Pull when tops yellow and fall over
- Cure in cool, dry place for 2-3 weeks
Questions
Garlic companion planting FAQ
What can I plant next to garlic?
Plant Tomato, Rose, Carrot, Beet, Cabbage, and Pepper beside garlic. Tomato: Pest and disease deterrent. Rose: Pest deterrent for ornamentals. Carrot: Good space and nutrient sharing. Beet: Strong scent helps deter beet pests. Cabbage: Strong scent helps hide brassicas from pests. Pepper: Strong scent helps deter aphids.
What should I not plant with garlic?
Keep garlic apart from Bean, Asparagus, and Pea. Bean: Alliums stunt beans and slow nitrogen fixation. Asparagus: Alliums are said to stunt asparagus crowns. Pea: Alliums stunt peas and slow nitrogen fixation.
How much sun do garlic plants need?
Garlic plants want full sun. Space them 6–8 in apart in well-draining, fertile soil rich in organic matter.
How long do garlic plants take to mature?
Most garlic plants are ready in about 240 days (planted fall, harvested spring). Garlic grows in USDA hardiness zones 3-9.
Compare every pairing at a glance
Open the guide, pick garlic, and see what thrives alongside it — and what quietly holds it back.
Open the pairing guide