How to water rosemary
Rosmarinus officinalis
Quick answer
Potted rosemary is ready for water during a dry spell when its potting mix can dry out quickly, especially in hot, dry, sunny weather.

Pet-safe
- Starting point (summer)
- every 6 to 8 days
- Starting point (winter)
- every 6 to 8 days
How to water rosemary
- 01
When to water
Water new rosemary during dry spells in its first year. For established plants in containers, water during dry spells when the potting mix can dry out quickly in hot, dry, sunny weather.
Watering demand rises during hot, dry, sunny spells. In winter, cold wet potting mix can rot roots, so a potted plant may need shelter from heavy rainfall.
- 02
How to water thoroughly
Apply water directly to the soil or potting mix above the root zone and continue until it escapes through the drainage hole.
Use a container at least 30 cm (12 in) wide and deep with plenty of drainage holes. The potting mix must not remain waterlogged.
- 03
Signs of too much or too little water
Persistently wet potting mix, especially in winter, is a warning condition because it can cause rosemary roots to rot and die. Dry potting mix during hot weather is the opposite check before watering. A yellow or brown leaf alone does not prove a watering cause.
All rosemary guides
Keep reading
Sources4 references
- Royal Botanic Gardens, Kew: Plants of the World OnlineTaxonomy · accepted name · included synonym · native range · cultivation · Name status · synonymy to Salvia rosmarinus
- Royal Horticultural SocietyGetting started · Sun · warmth · free-draining soil · containers · winter protection · Synonyms · Position · Growing Conditions · Pests · Diseases
- University of Maryland Extension / Ask ExtensionExpert Response · indoor rosemary guidance
- Iowa State University Extension and OutreachBest Herbs for Indoors · The Best Growing Conditions for Indoor Herbs
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