Can you plant Swiss chard and leeks together?

Charts say no. Nobody has tested Swiss chard with leeks, as far as we could find. The chart entry we found cites no source.

Why we can't give a firm answer

Garden charts advise against it. 1 garden chart entry says to keep them apart. It cites no source. Charts pass on gardening tradition; they are not tests.
List of companion plants (uncited entry) (Wikipedia)

What to plant with Swiss chard and leeks

No plant in our data is a good neighbour of both Swiss chard and leeks yet.

What to keep away from Swiss chard and leeks

Nothing in our data is a bad neighbour of Swiss chard or leeks.

The evidence in detail

For readers who want to dig in: every chart entry, study and yield trial behind the answer above, with the numbers.

Tradition, research and yield trials

Tradition

Bad

avoidgood

1 chart entry: 0 recommend, 1 advise against.

0 cited, 1 uncited.

Research

No papers found on this pair.

Yield trial

No intercropping yield trial.

Untested folklore

Companion plants for both Swiss chard and leeks

Plants that are good neighbours of each. Biggest harvest gain first; each cell links to the evidence for that pair.

No plant is a good neighbour of both Swiss chard and leeks in our data yet.

The evidence, with sources

TraditionBad1 entry

Badadvises against
Leek: avoid Swiss chard
List of companion plants (uncited entry) (Wikipedia)

Plan a bed with Swiss chard and leeks

All neighbours of swiss chard and of leek, or every pair at once in the companion planting chart.

Have you grown Swiss chard and leeks together?

Tell other gardeners what happened: spacing, pests, harvest, or ask a question. Reader notes are not checked by us and do not change the verdicts on this page.