Growing Guide for Primula japonica 'Miller's Crimson'
Common Name: Japanese Primrose
Family: Primulaceae
Hardiness: Hardy perennial
Site Selection
- Light: Prefers partial shade; can tolerate full sun but may need more moisture.
- Soil: Moist, well-drained, rich in organic matter. A slightly acidic to neutral pH is ideal.
Planting
- When to Plant: Best planted in spring or autumn.
- Spacing: Space plants about 30 cm (12 inches) apart to allow for growth.
- Depth: Plant at the same depth as they were in their pots.
Watering
- Keep the soil consistently moist, especially during dry spells. Water regularly but avoid waterlogging.
Feeding
- Apply a balanced liquid fertilizer every 4-6 weeks during the growing season to encourage healthy growth.
Maintenance
- Mulching: Apply a layer of organic mulch in spring to retain moisture and suppress weeds.
- Dividing: Divide clumps every 3-4 years in early spring or autumn to maintain vigour.
Pests and Diseases
- Generally pest-resistant but watch for slugs and snails. Use bait or barriers as needed.
- Ensure good air circulation to prevent fungal issues.
Propagation
- Can be propagated by division or seed. For seeds, sow in spring in a seed tray and keep moist until germination.
Special Features
- Flowers: Bright crimson flowers appear in late spring to early summer, attracting pollinators.
- Foliage: Green, wrinkled leaves form a rosette at the base.
Companion Planting
- Works well with ferns, hostas, and other moisture-loving plants.
Additional Tips
- Consider planting near a water feature or in a bog garden for optimal conditions.
- Deadhead spent flowers to encourage more blooms throughout the season.
By following this guide, you can successfully grow Primula japonica 'Miller's Crimson' and enjoy its vibrant colour in your garden!
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