Garden Sage Companion Plants
Salvia officinalis · mint family family · rotation group: other
The best companion plants for garden sage are Brussels Sprouts and Brassicas, Rosemary, Bean, Strawberry and Strawberry. Avoid planting garden sage near Cucumber, Onion. Of the 7 pairings recorded here, 1 is supported by published research and 5 are traditional practice with no controlled evidence behind them.
What to plant with garden sage
| Plant | Claimed benefit | Evidence | What the evidence actually shows |
|---|---|---|---|
| Brussels Sprouts and Brassicas | Sage reduces diamondback moth populations on brassicas. | Research-backed | One of the few aromatic-herb claims with trial support: UMN Extension reports sage and thyme reduced diamondback moth populations on Brussels sprouts. Read the caveat carefully though, because that result was obtained in a greenhouse, which matches WSU's finding that aromatic volatiles accumulate in closed systems but disperse too fast in open gardens. |
| Bean | Beans are said to grow better beside sage. | Traditional | Appears throughout companion charts with no supporting trial.
Source: Herbs, Clemson HGIC |
| Rosemary | Classic Mediterranean bed partner sharing sun and drainage needs. | Traditional | Cultural compatibility only. |
| Strawberry | Sage is a traditional strawberry-bed edging plant. | Traditional | No measured effect; sage's size means it competes if planted too close. |
| Carrot | Sage is said to deter carrot rust fly. | Not supported | Unlike the diamondback moth result, this one has no trial behind it and falls under the aromatic-repellency belief WSU reports field research does not support; exclusion netting is the control that works. |
What not to plant with garden sage
| Plant | Claimed problem | Evidence | What the evidence actually shows |
|---|---|---|---|
| Cucumber | Cucumbers are said to be stunted by nearby sage. | Traditional | One of the oldest chart entries with no trial behind it; the real conflict is cucumber's high water demand versus sage's root-rot risk. |
| Onion | Sage and onions are said to suppress each other. | Traditional | No supporting evidence located in extension or peer-reviewed literature.
Source: Herbs, Clemson HGIC |
The honest verdict
Of everything gardeners recommend planting alongside garden sage, 1 pairing has been tested properly: Brussels Sprouts and Brassicas. Those are the ones worth planning your bed around.
The remaining 3 pairings on this page are traditional practice. They circulate on every companion planting chart online, but we could not find controlled evidence testing them. They are not wrong so much as unverified — most cost nothing to try, and interplanting flowers and herbs has its own well-documented benefit of pulling pollinators and predatory insects into the garden.
Widely repeated, not supported: Carrot — Unlike the diamondback moth result, this one has no trial behind it and falls under the aromatic-repellency belief WSU reports field research does not support; exclusion netting is the control that works.
Every row above links to the publication it came from. See how we grade evidence.
Other recorded effects
1Effects that aren't about a neighbouring plant — what garden sage does for (or to) the garden around it, and the caveats attached to the popular versions of those claims.
| Effect | The claim | Evidence | What the evidence actually shows |
|---|---|---|---|
| Pollinators | Sage in bloom is a major nectar source for bumble bees and hummingbirds. | Traditional | Sage flowers are reliably worked by pollinators; the downstream crop benefit is not quantified. |
Growing garden sage: the numbers
| Sun | Full sun (6+ hours) |
|---|---|
| Water | Low once established |
| Spacing | 18 in apart · 24 in between rows · 1 per square foot |
| Mature size | about 24 in tall |
| Soil pH | 6–8 |
| Days to maturity | 70–80 days |
| Frost tolerance | Hardy — takes hard frost |
| Containers | Yes — 3 gallon minimum |
| Hardiness zones | 4–8 (perennial) |
| Common pests | spider mites, leafhoppers, spittlebugs, slugs |
| Common diseases | root rot, powdery mildew, verticillium wilt, rust |
When to plant garden sage
Zone 6b shownStart seeds indoors: Feb 13 – Feb 27 — 6–8 weeks before your last frost
Transplant outdoors: Apr 10 – Apr 23 — around your last frost date
Direct sow outdoors: Apr 10 – Apr 23 — around your last frost date
Expected harvest: Jun 19 – Jun 29 — 70–80 days from planting
Those dates are for zone 6b. Get your own dates by ZIP code →
Varieties worth knowing
seeds- Berggarten — broad grey-blue leaves; rarely flowers, so stays leafy
- Icterina — chartreuse variegated; ornamental and culinary
- Purpurascens — purple-tinged young growth; not reliably winter hardy
- Tricolor — white and rose-pink variegation; least winter hardy
Variety names link to seeds on Amazon. As an Amazon Associate we earn from qualifying purchases. These are the varieties named in the extension sources for this crop, not a paid placement — where a source recommended a variety for a specific reason, that reason is the note beside it.
Put it in a bed
The garden planner checks every square against this ledger as you place crops — if you drop garden sage next to something recorded as a bad neighbour, the square turns red and tells you why.
Records for the plants named above:
Same rotation group (other) — don't follow one with another:
Garden Sage companion planting questions
What should not be planted next to garden sage?
How far apart should garden sage be planted?
Does companion planting with garden sage actually work?
When should I plant garden sage?
Sources for this record
- Salvia officinalis, NC State Extension Gardener Plant Toolbox
- Companion planting in home gardens, University of Minnesota Extension
- CMG GardenNotes #731, Herb Gardening, Colorado State University Extension
- Herbs, Clemson HGIC
- Sage Key Growing Information, Johnny's Selected Seeds
Record compiled 2026-07. Spot an error or a study we missed? Tell us and we'll correct the entry.