Swiss chard growing profile.

Swiss chard Companion Plants

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

Swiss chard Beta vulgaris subsp. vulgaris (Cicla Group)

Cool-season vegetable in the beet family. View plant profile →

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Quick answer

No reviewed study supports a specific beneficial companion for swiss chard yet. 1 popular pairing has no verified relationship, which is not the same as safe or harmful.

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 →

No verified relationship (1)

Zero score and an honest unknown state. Spacing, light, water and timing are evaluated normally.

No verified relationship: we did not find a source that establishes a benefit or harm for these pairs. This is not the same as "compatible".

TomatoSolanum lycopersicumNo verified relationshipOther Swiss chard and Tomato affect each other (mutual)Summer · arrangement unspecifiedUnknown Review: August 15, 2026

Why?

Claim. We did not find a source that establishes a benefit or harm between swiss chard and tomato.

Mechanism. None documented.

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

Applies when. The planner evaluates spacing, light, water and timing normally.

Limitations. No relationship documented.

Evidence. Unknown: No source meeting the inclusion rules. (none).

Sources. University of Minnesota Extension 2023

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

Example layout for swiss chard

No supported or conditional relationship specifies a layout. Space swiss chard at 20–30 cm and plan by light, water and timing.

**Side view of swiss chard (30–60 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.

Swiss chard

Tomato30 wk overlap

Overlap in weeks
Tomato	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 swiss chard on a 2-year cycle with other beet family crops (Beet, Spinach). Shared risks: leaf miner (Pegomya), Cercospora leaf spot, downy mildew.

Crop rotation hub · Amaranthaceae 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 swiss chard: 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.

Swiss chard Companion Plants

Quick answer

No verified relationship (1)

No records match those filters

Example layout for swiss chard

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