Herbs
Rosemary
A long-lived woody herb for strong light and careful drainage, not a forgiving low-light windowsill plant.
Salvia rosmarinus
Explore herbs
Photo: T137 / CC BY-SA 3.0
At a glance
- Difficulty
- intermediate
- Maintenance
- moderate
- Time to harvest
- 90–150 days · after-establishment
- Water need
- low
- Growth habit
- upright woody shrub
- Indoor suitability
- poor
- Support
- Usually not required
What this plant must have
These are minimum limits, not aspirational targets. Missing one can prevent healthy growth.
- Minimum direct light
- 6 hours
- Minimum container depth
- 25 cm (≈ 9.8 in)
- Minimum container volume
- 10 L (≈ 2.6 US gal)
- Active growth range
- 2–32 °C (≈ 35.6–89.6 °F)
- Frost behaviour
- tolerant
- Needs strong light and excellent drainage
- Tender in most climates: overwinter it indoors unless you grow a cold-hardy cultivar
Conditions it prefers
These conditions improve performance, but there may be room to adapt within the hard limits above.
- Ideal direct light
- 8–10 hours
- Ideal temperature
- 5–29 °C (≈ 41–84.2 °F)
- Preferred depth
- 30–40 cm (≈ 11.8–15.7 in)
- Preferred volume
- 15–25 L (≈ 4–6.6 US gal)
- Drainage
- free draining
Overview
A long-lived woody herb for strong light and careful drainage, not a forgiving low-light windowsill plant.
What makes it practical
Begin with a healthy small plant in a free-draining mix and avoid an oversized pot that stays wet.
What limits success
At least 6 hours of direct light; provide at least 25 cm of container depth and avoid treating the minimum as the preferred setup.
Getting started
Begin with a healthy small plant in a free-draining mix and avoid an oversized pot that stays wet.
Before planting
Prepare a container with open drainage and enough volume for the plant's mature root system. The documented minimum is 10 litres.
Planting
Begin with a healthy small plant in a free-draining mix and avoid an oversized pot that stays wet.
Position
Aim for 8–10 hours of direct light while watching for heat reflected from walls or glass.
Ongoing care
Water thoroughly, then wait until the upper mix dries; give maximum available light and air movement.
Watering check
This crop's water need is low. Check the mix itself instead of watering by a fixed weekday schedule.
Harvesting
Take short green tips and avoid removing a large share of the plant at once.
Timing
The documented range is roughly 90–150 days after establishment; temperature and cultivar can shift it.
Beginner mistakes
Indoor rosemary often declines from the combination of weak light and persistently damp roots.
A useful reset
Change one condition at a time, then judge the newest growth rather than expecting damaged leaves to recover.
Troubleshooting context
Start with the visible symptom and rule out moisture, light, temperature, and root-room conflicts before assuming disease.
Relevant symptom
The launch troubleshooting library links this plant to brown leaf edges as a useful first diagnostic path.
Frequently asked questions
- How much light and root room does rosemary need?
Rosemary needs at least 6 hours of direct light. It needs a container at least 25 cm deep holding about 10 litres. A 30–40 cm container with 15–25 litres is easier to keep evenly watered. Expect roughly 90–150 days after establishment, which shifts with temperature and cultivar.
Editorial review:
Reviewed by NookHarvest Editorial Team
How we review adviceCorrections and questionsProblems and next steps
Explore herbs
Herbs
Set up the container
Container Gardening
Choose pots, mix, drainage, and plant combinations that make small-space care more forgiving.
Troubleshoot a likely symptom
The Leaf Edges Are Turning Brown
Brown edges can follow drying, salt buildup, heat, cold glass, or root damage; the surrounding conditions distinguish them.
Could I Be Overwatering?
Wet soil, yellowing, soft growth, or fungus gnats