How to Grow Rosemary from a Cutting

Growing rosemary from cuttings is the easiest way to create new plants that are identical to the parent. Instead of starting from slow-germinating seeds, cuttings root quickly and preserve the same aromatic strength. Here’s how to prepare and plant rosemary cuttings step-by-step for reliable results.

Choose the Right Stem

Select a healthy, non-flowering stem 8–10 cm long from the upper part of the plant.
The best time is late spring to mid-summer when new growth is semi-hardwood — flexible but not soft.
Avoid woody stems; they root slowly and unevenly.

Prepare the Cutting

Strip leaves from the lower 4 cm of the stem.
Lightly scrape the lower bark to expose green tissue — this encourages root sprouting.
Dip the base into rooting hormone powder or gel for faster, stronger root development.

Tip: Always take several cuttings — even experienced gardeners expect only 70–80% success.

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How to Plant a Rosemary Cutting

Rosemary cuttings root well in both soil and water, but soil propagation produces stronger, transplant-ready roots. Use small pots or trays filled with a lightweight mix such as 50% perlite and 50% peat or coco coir.

Planting Steps

Make a small hole with a pencil or stick and insert the cutting 3–4 cm deep.
Press soil gently around the base to hold the stem upright.
Water lightly so the mix is evenly moist but never soggy.
Cover with a clear dome or plastic bag to retain humidity while allowing airflow.

Water Propagation (Optional)

Place stems in a glass of clean water, keeping only the leafless section submerged.
Change water every 2–3 days to prevent bacterial growth.
Once roots reach 3–4 cm, transplant gently into soil for stability.

Pro Tip: Keep the temperature between 20–25 °C and provide bright, indirect light. Roots usually appear within 3–4 weeks under these conditions.

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Aftercare, Feeding & FAQs

Transplanting New Plants

Once roots are visible through drainage holes or resist a gentle tug, transplant to a larger pot.
Use a free-draining mix (2 parts potting mix : 1 part sand : 1 part perlite).
Introduce full sunlight gradually to avoid leaf scorch.

Feeding Young Rosemary

Begin fertilising two weeks after transplanting with CompleteGrow All Purpose Liquid NPK 20-20-20
at 3–5 mL per 2 L of water every 14 days.
Balanced nutrients encourage root strength and dense foliage without softening stems.

FAQs

Can I propagate rosemary in winter?
It’s possible indoors under grow lights, but success rates are higher in spring and summer when plants are actively growing.

Do I need rooting hormone?
It isn’t essential but dramatically improves success — especially in cooler weather.

How long before I can harvest?
Wait 3–4 months for plants to mature. Harvest lightly to encourage branching and a bushy shape.

CompleteGrow Recommendation

For vigorous growth and fast establishment, feed new rosemary cuttings with
CompleteGrow All Purpose Liquid NPK 20-20-20 every 2 weeks.
Its balanced nutrients support rapid root formation, dense foliage, and rich aroma.