How to Care for Salvia rosmarinus (Rosemary)

Korean name: 로즈마리

This Mediterranean herb has needle-like leaves that emit a refreshing fragrance. It serves a dual purpose as a culinary herb and an air purifier.

Key facts

Care Guide

Detailed care guide

Rosemary is a Mediterranean herb known for its thin, fragrant, needle-like leaves. It's a practical plant, useful both in cooking and for air purification.

Watering

Water only after the soil has dried out completely. It's very sensitive to overwatering — if the soil stays constantly moist, the leaves can turn yellow and mushy. Even a longer gap between waterings that leaves the tips briefly dry causes little real harm.

Light

It needs 6 or more hours of direct sunlight a day to grow healthy. If light is insufficient, the stems can grow long and the leaves may become pale. A bright, sunny windowsill is ideal.

Humidity

Rosemary likes low humidity. Air that's too humid can make it hard for the roots to breathe, which can harm the plant. Ventilate often if indoor humidity is high.

Temperature

It grows well at 10–25°C. If it's too cold, growth can stop or leaves may drop, so it's safest to grow it indoors during the cold winter months.

A common first-timer mistake

First-time growers often make the mistake of watering too often. Always check with your hand whether the soil is dry, and hold off if it still feels moist.

If you have pets

Rosemary has no known toxicity to pets. That said, eating too much of any plant can cause an upset stomach, so move it if your pet chews on it habitually.

Care by Season

In spring and summer, growth speeds up, so a diluted fertilizer about once a month helps. In hot weather, keep it near a sunny window, and in winter, bring it indoors so the temperature doesn't drop below 10°C. As the seasons change, check the soil surface each time and water only once it's dry all the way to the roots.

Common Problems and Fixes

Soil that stays wet for a long time can turn the leaves yellow and mushy. Dryness causes the leaf tips to turn slightly brown, but that's not seriously harmful, so there's no need to rush to water. If light is insufficient, the stems grow thin and long, so be sure to give it a spot with plenty of sunlight.

Repotting and Propagation

Repot when drainage is poor or the roots have filled the pot. Choose an alkaline, well-draining soil. Propagation is generally easiest using healthy cuttings taken during active growth.

Who It's For

A great fit for anyone with a sunny window who wants to enjoy the fragrance of fresh herbs. Even busy people who struggle to water often can grow it without much trouble just by checking soil dryness. A great choice for anyone who can offer low humidity and a fairly mild indoor environment.

Written by AI from the care facts in this entry. Treat it as a starting point.

Common questions

How often should you water Salvia rosmarinus?

Water when the soil is completely dry. Very sensitive to overwatering. Roughly every 10 days is the baseline; adjust for the season and the spot it sits in.

Where should you keep Salvia rosmarinus?

It likes Requires at least 6 hours of direct sunlight daily. You can grow it outdoors. Use Very well-draining alkaline soil.

Is Salvia rosmarinus safe around pets?

No known toxicity, so it is fine to keep around pets.

Is Salvia rosmarinus good for beginners?

Difficulty: Moderate. Keep it around 10~25°C. Humidity: Prefers low humidity. Fertilise Once a month diluted in spring and summer.