Moisture range
15–35%
Days to maturity
80–100
Light
Full sun
Growing Degree Units
900 · base 50°F
When to plant rosemary in your zone
Indoor-start, transplant and harvest dates calibrated to your climate.
Growing notes
Rosemary is a tender perennial herb that is not winter-hardy in Minnesota but thrives in hot, sunny Minnesota summers. It should be grown in unglazed clay pots and brought indoors during winter.
Harvest signs
Many herbs will have the best flavor if harvested just before flowering
▶Pests & diseases— root rots
Common diseases · 1
Root rots: Root rots are the most common problem of herbs grown indoors ↗
Companions & antagonists
Plant near:BeansBrassica
Tip: Protect from hard freezes in Zone 5b.
Common questions
How much water does rosemary need?
Rosemary has middle-of-the-road water needs. Aim to keep soil moisture around 15–35%, letting the top inch dry slightly between waterings rather than staying soggy.
Can I grow rosemary in a raised bed or container?
Rosemary is a perennial that stays put for years, so give it a permanent in-ground spot or a large, deep container it can live in long-term.
Does rosemary come back every year?
Yes — rosemary is a perennial. Plant it once and it comes back each year, so pick a spot it can keep for several seasons.