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Rosemary growing in a garden
Perennial herb

Rosemary plant profile

Rosmarinus officinalis

A perennial herb for full sun.

Last updated .

When to plant

When to plant Rosemary

Set plants out in spring after frost danger, ideally in containers rather than in the ground. Rosemary is not reliably hardy below zone 8, so in cold-winter areas leave it outdoors into fall, then bring it indoors just before the first frost.

The calendar shows this cited seasonal window as an approximate band. It does not convert the season into frost-adjusted dates.

Open Rosemary in my garden calendar

Shows the source-backed planting season, not frost-adjusted dates.

Growing conditions

Sun
Full sun
Lifecycle
Perennial

Common problems

Watch for these

Also watch for: winter kill, indoor dieback.

Evidence trail

Evidence behind this profile

Original extension and institutional publications behind the planting, care, and safety facts on this page.

  1. Salvia rosmarinus

    NC State Extension. Supports general reference. Checked 2026-07-26.

  2. Toxic and Non-Toxic Plants: Rosemary (Rosmarinus officinalis) entry

    ASPCA Animal Poison Control Center. Supports pet-safety verdicts for dogs and cats. Checked 2026-07-18.