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Thompson & Morgan Primula Capitata Noverna Deep Blue - 1 Seed Packet (25 Seeds)

Thompson & Morgan Primula Capitata Noverna Deep Blue - 1 Seed Packet (25 Seeds)

Primula capitata 'Noverna Deep Blue' boasts delightful deep blue flower heads, elevated by powdery...

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Product Information

Full details

This guide is for gardeners seeking low-maintenance, visually striking plants for borders and containers. The Primula Capitata 'Noverna Deep Blue' offers delightful deep blue flower heads with unique powdery stems and grey-green foliage, blooming in its first year from summer through autumn. A key caveat is that germination can be erratic, requiring patience.

All features

Model Part Number25782
BrandThompson & Morgan

Extended Product Information

FAQs

When is the best time to sow Primula Capitata 'Noverna Deep Blue' seeds?

Sow from January to March for first-year flowering. This timing allows plants to establish before planting out.

How long does germination typically take?

Germination usually takes between 21 to 30 days, but it can be erratic and may take longer. Patience is key.

What type of soil does this primula prefer?

It thrives in humus-rich, moist, but well-drained soil. Improving heavy clay soil with compost is recommended.

Can I grow this plant in full sun?

No, this primula prefers partial shade. Full sun can scorch the foliage and flowers, especially in warmer climates.

What is the mature size of the plant?

When fully established, the Primula Capitata 'Noverna Deep Blue' typically reaches a height and spread of up to 30cm (approximately 12 inches).

How far apart should I plant them outdoors?

Plant them out in the garden spaced 20-30cm (8-12 inches) apart to allow for their full growth and spread.

Do I need to do anything special after flowering?

Deadheading, or removing spent flowers, can encourage the plant to produce more blooms throughout the summer and autumn.

Troubleshooting

Seeds not germinating

Ensure consistent moisture and the correct temperature (18-20°C). Germination can be erratic; continue to maintain conditions for up to 30 days. Avoid waterlogging the compost.

Seedlings are weak or leggy

Provide adequate light immediately after germination. Ensure the temperature is not too high. Handle seedlings gently when transplanting.

Poor flowering

Confirm the plant is in partial shade and has moist, humus-rich soil. Ensure it is receiving adequate water and has been planted at the correct spacing.

Pest infestations (e.g., slugs, snails)

Use appropriate slug pellets or beer traps, especially in moist conditions. Handpick pests in the evening or early morning. Ensure good air circulation around plants.

Pros and Cons

Pros

  • Eye-catching deep blue flowers
  • Flowers in the first year
  • Suitable for both borders and containers
  • Unique powdery stem and foliage contrast
  • Relatively low maintenance once established

Cons

  • Germination can be slow and erratic
  • Requires specific temperature range for sowing
  • Prefers partial shade, limiting sunny spot options
  • Images are for guidance only, actual results may vary

Setup, Compatibility & Care Instructions

Sowing:

  1. Use lightly firmed, moist seed compost in pots or trays.
  2. Cover seeds with a very light sprinkling of compost or vermiculite. Avoid deep sowing.
  3. Seal the container in a polythene bag to maintain humidity.
  4. Maintain a temperature between 18-20°C (65-68°F).
  5. Do not exclude light after sowing, as it aids germination.
  6. Keep the compost surface moist but not waterlogged.
  7. Expect germination to take 21-30 days, which can be erratic.

Transplanting:

  1. Once seedlings are large enough to handle, transplant them into individual 7.5cm (3in) pots or trays.
  2. When plants are well-grown and the risk of frost has passed, plant them outdoors.

Planting:

  1. Choose a location in partial shade.
  2. Ensure the soil is humus-rich, moist, but well-drained.
  3. Space plants 20-30cm (8-12in) apart.

Care:

  • Water regularly, especially during dry periods, to keep the soil consistently moist but not waterlogged.
  • Remove spent flowers to encourage further blooming.
  • Protect from harsh winds.
  • This variety does not require pre-chilling.

Compatibility:

  • Ideal companions include shade-tolerant perennials and annuals like Hostas, Ferns, Impatiens, and Begonias.

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