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Rosemary Seeds - Unwins

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Classic Mediterranean herb with aromatic flavour Hardy and low-maintenance perennial Perfect for c...

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This guide is for home gardeners seeking to grow a classic, aromatic Mediterranean herb. Unwins Rosemary seeds offer a hardy, low-maintenance perennial perfect for culinary use, borders, and containers, attracting beneficial pollinators. A key caveat is the potentially slow germination, requiring patience.

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Model Part Number30410024
BrandUnwins

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FAQs

How long does it take for rosemary seeds to germinate?

Rosemary seeds can take a long time to germinate, typically between 2 to 8 weeks. Patience is key, and maintaining consistent moisture and warmth is important during this period.

Can I grow rosemary indoors?

Yes, rosemary can be grown indoors, but it requires a very sunny spot (like a south-facing windowsill) and good air circulation. Ensure the pot has drainage holes and avoid overwatering.

When is the best time to sow rosemary seeds?

The best time to sow rosemary seeds is from February to July, indoors or in a greenhouse. They can be transplanted outdoors after the risk of frost has passed and once they are large enough to handle.

How do I harvest rosemary?

You can harvest rosemary sprigs as needed throughout the year. Use sharp scissors or secateurs to snip off the required amount. Avoid cutting into the old, woody base of the plant as it will not regrow from there.

What should I do if I accidentally cut into old woody growth?

Rosemary does not typically regrow from old woody stems. If you have cut back too hard, focus on nurturing the remaining green growth and ensure the plant has optimal conditions for recovery. It may not regrow from the cut woody section.

Will rosemary survive the winter?

Rosemary is a hardy perennial in many climates, especially when established. In colder regions or for very young plants, providing some winter protection or growing it in a pot that can be moved to a sheltered location is recommended.

Troubleshooting

Seeds are not germinating after several weeks.

Rosemary seeds can have slow and erratic germination. Ensure consistent moisture and warmth (10-15°C). Re-sowing might be necessary if germination is very poor.

Young plants are leggy or weak.

Ensure seedlings are receiving adequate light. If grown indoors, move to a brighter spot or use grow lights. Avoid overwatering.

Rosemary plant is dying back or looking unhealthy.

Check soil drainage; rosemary dislikes waterlogged conditions. Ensure the plant receives adequate sunlight and is not in a draughty or overly exposed position, especially when young.

Leaves are turning yellow.

This can indicate overwatering or poor drainage. Allow the soil to dry out more between waterings and ensure the pot or ground has good drainage.

Pros and Cons

Pros

  • Low maintenance and hardy perennial.
  • Adds significant flavor and aroma to cooking.
  • Attracts beneficial pollinators like bees.
  • Attractive evergreen foliage and blue flowers.
  • Versatile for use in pots, borders, and gardens.

Cons

  • Germination can be slow, taking up to 8 weeks.
  • Does not regrow from old woody growth if cut back too hard.
  • Requires full sun and well-drained soil.
  • Needs gradual acclimatization to outdoor conditions.
  • Plants require adequate spacing (60cm) to grow well.

Setup, Compatibility & Care

Sowing:

  1. Fill a seed tray with moist seed compost.
  2. Sow seeds thinly on the surface and cover lightly with more compost.
  3. Maintain a temperature of 10–15°C and keep the compost consistently moist.
  4. Be patient, as germination can take up to 8 weeks.

Growing On:

  1. Keep seedlings in a bright location, out of direct sun.
  2. Once large enough to handle, transplant each seedling into an 8cm pot with potting compost.

Planting Out:

  1. Gradually acclimate young plants to outdoor conditions over 2-3 weeks.
  2. Plant outdoors from early summer onwards.
  3. Ensure plants are spaced at least 60cm apart.

Site Requirements:

  • Light: Prefers full sun.
  • Soil: Requires well-drained soil. Thrives in dry conditions.
  • Location: Best in a sheltered position.

Care:

  • Water moderately, allowing soil to dry slightly between waterings.
  • Harvest leaves as needed. Avoid cutting into old, woody stems.
  • Protect from harsh winter weather in colder climates, especially when young.