Borage growing profile.

Borage Companion Plants

What may help, what can compete, and where the evidence is still uncertain.

Borage Borago officinalis

Warm-season flower in the other. View plant profile →

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Quick answer

No reviewed study supports a specific beneficial companion for borage yet. 3 traditional pairings are listed separately because the review found no adequate evidence.

Every status below has a direction, mechanism, context and source. "No verified relationship" means we looked and found nothing usable; the planner then evaluates spacing, light, water and timing normally. How we classify evidence →

Traditional claim (3)

Never a hard rule; may appear as an optional experiment.

Traditional claims are shown separately because repetition across charts is not evidence. They never change a planner score; treat them as optional experiments.

StrawberryFragaria × ananassaTraditionalFlavour or growth claim Borage may affect StrawberryPerennial · arrangement unspecifiedTier D Review: August 15, 2026

Why?

Claim. Borage is said to improve strawberry flavour and yield and to attract pollinators. Bee visits are real; the flavour and yield claim has no controlled evidence.

Mechanism. Proposed by tradition; not demonstrated in a controlled comparison.

Conditions. Planted together Both plants must be present at the same time.

Applies when. Optional experiment, not a guarantee.

Limitations. Borage shades low strawberry plants if planted too close.

Evidence. Tier D: Traditional knowledge or structured community observations without a controlled comparison. (tradition).

Sources. University of Minnesota Extension 2023

Reviewed August 15, 2026 by Garden Planner editorial team (pending independent horticultural review). Record borage--strawberry--flavor_or_growth v1. Request a correction.

TomatoSolanum lycopersicumTraditionalPest suppression · tomato hornworm Borage may affect TomatoSummer · arrangement unspecifiedTier D Review: August 15, 2026

Why?

Claim. Borage is said to deter tomato hornworm and improve tomato growth. No controlled evidence found. Borage flowers do attract bees, which tomatoes do not need for fruit set.

Mechanism. Proposed by tradition; not demonstrated in a controlled comparison.

Conditions. Planted together Both plants must be present at the same time.

Applies when. Optional experiment, not a guarantee.

Limitations. Borage is large and deep-rooted; at close spacing it competes with tomatoes.

Evidence. Tier D: Traditional knowledge or structured community observations without a controlled comparison. (tradition).

Sources. University of Minnesota Extension 2023

Reviewed August 15, 2026 by Garden Planner editorial team (pending independent horticultural review). Record borage--tomato--pest_suppression v1. Request a correction.

ZucchiniCucurbita pepoTraditionalPollination support Borage may affect ZucchiniSummer · arrangement unspecifiedTier D Review: August 15, 2026

Why?

Claim. Borage flowers are heavily visited by bumblebees and honeybees, which squash need for fruit set; whether borage measurably improves squash pollination in a garden has not been tested.

Mechanism. Proposed by tradition; not demonstrated in a controlled comparison.

Conditions. Planted together Both plants must be present at the same time.

Applies when. Optional experiment, not a guarantee.

Limitations. Plausible mechanism; no outcome study found.

Evidence. Tier D: Traditional knowledge or structured community observations without a controlled comparison. (tradition).

Sources. University of Minnesota Extension 2023

Reviewed August 15, 2026 by Garden Planner editorial team (pending independent horticultural review). Record borage--zucchini--pollination v1. Request a correction.

**A realistic garden scene where borage grows beside a plant with a traditional or unknown relationship.**Coexistence in a photograph is not evidence that the plants affect each other.

Example layout for borage

No supported or conditional relationship specifies a layout. Space borage at 45–60 cm and plan by light, water and timing.

**Side view of borage (45–75 cm) beside typical companions, showing canopy, support, shade and access.**

When these companions overlap

Bed occupancy in Portland, Oregon (estimates). A relationship only matters while both plants are present.

Borage

Strawberry19 wk overlap

Tomato30 wk overlap

Zucchini30 wk overlap

Overlap in weeks
Strawberry	19 weeks
Tomato	30 weeks
Zucchini	30 weeks

Crop rotation guidance

Rotation is about what occupied the bed in previous seasons and is calculated separately from the live companion relationships above.

Rotate borage on a 1-year cycle with other other crops (Okra, Sweet potato, Asparagus, Rhubarb, Blueberry). Shared risks: .

Crop rotation hub · Boraginaceae family page

Physical and resource fit

No significant light, water, pH or sprawl conflicts with the listed companions at recommended spacing.

Fit checks come from plant attributes and apply even when a pairing has a positive claim.

Community observations (anecdotal)

These reports come from gardeners and are not reviewed evidence. Results vary with soil, climate and practice. Community data never changes an evidence tier or a planner score.

Reports for borage: 0 (community submissions open in a later phase; drafts are stored only on your device).

**Community-submitted photo area (moderated) with context fields: region, season, layout, varieties, outcome.**

Record an observation

Evidence summary and sources

Companion planting in home gardens — University of Minnesota Extension, 2023 (guidance)

Reviewer: Garden Planner editorial team (pending independent horticultural review). Status counts on the Companions A–Z page are derived from these records. Corrections.

Borage Companion Plants

Quick answer

Traditional claim (3)

No records match those filters

Example layout for borage

When these companions overlap

Crop rotation guidance

Physical and resource fit

Community observations (anecdotal)

Evidence summary and sources

Related

Visual evidence on this page

Our Methodology & Sources