Cabbage and Rosemary
Beneficial Pair — Good Match
No trial we found isolates rosemary and cabbage moth specifically - the claim is inherited rather than measured, and rosemary's own long-term perennial nature is the better-documented, more practically relevant fact.
Mechanism: Pest Masking (Scent Confusion)
Rosemary's camphor-and-pine scent carries the traditional cabbage-moth-masking claim used elsewhere on this site for the same herb. As a long-lived woody perennial that can persist for many years once established, rosemary functions differently here than an annual herb would - it becomes a fixed feature of the garden's layout rather than a fresh seasonal decision.
Rosemary's pest-masking claim near cabbage follows the familiar unconfirmed pattern used elsewhere on this site, but its long-term perennial presence is the detail that actually shapes how this pairing gets used in practice.
A Fixture, Not a Fresh Decision Each Year
Unlike an annual herb replanted each season, an established rosemary shrub can remain productive for many years, growing into a substantial woody plant over time. That permanence means siting rosemary near a cabbage bed is more of a long-term garden-layout choice than a companion-planting decision revisited every planting cycle - once it's in the ground and thriving, it's likely to stay.
This is worth factoring in before planting: if you rotate cabbage and other brassicas through different beds each year, a permanent rosemary planting at one bed's edge means that particular spot keeps its rosemary neighbor regardless of what brassica crop rotates through nearby.
Spacing
Site rosemary at the driest edge of a cabbage bed, since it needs well-drained soil that conflicts with cabbage's own consistent-moisture needs, the same tension noted for rosemary elsewhere on this site.
Watch For
Because rosemary persists for years, plan cabbage rotation around a fixed rosemary planting rather than expecting to freely relocate either crop each season - rosemary isn't going anywhere once established.
Frequently Asked Questions
Can I grow rosemary in a container next to cabbage instead of in the ground, to avoid committing that bed edge permanently?
Yes, and it solves the rotation problem directly - a containerized rosemary can be moved to whichever bed happens to have cabbage in a given season, or brought indoors for winter in colder zones, without dedicating that patch of ground to rosemary for years. The tradeoff is size: a potted plant stays smaller and eventually needs repotting or root-pruning, while an in-ground rosemary can grow into a much larger shrub over time.
If I rotate cabbage through several beds, is it worth planting rosemary at more than one bed's edge?
Probably not necessary. The pest-masking claim is unconfirmed regardless of how many rosemary plants you have, and multiple plantings just mean more of your garden's edges are permanently committed rather than available for rotation - which cuts against the flexibility that makes bed rotation useful in the first place. One well-sited rosemary shrub that a rotating cabbage bed periodically sits near is more practical than several scattered ones.