Penstemon Seeds 'Barbatus Mix' - 250 Seeds
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This guide is for gardeners seeking a hardy, long-flowering perennial for sunny beds and borders. Unwins Penstemon Barbatus Mix Seeds provide a vibrant display of purple, pink, and white flower spikes throughout summer, attracting pollinators and returning each year. A potential caveat is the need for specific indoor sowing conditions for optimal germination.
All features
| Model Part Number | 30211186 |
|---|---|
| Brand | Marshalls Garden |
Extended Product Information
FAQs
How many seeds are in a packet?
Each packet contains approximately 250 seeds.
When is the best time to sow these seeds?
It is recommended to sow seeds indoors in spring, and plant out after the last frost once hardened off.
Can these Penstemon seeds be grown in containers?
Yes, they are ideal for pots and containers, provided they have good drainage and adequate sunlight.
How tall do these plants grow?
The specific height can vary, but Penstemon barbatus typically produces flower spikes that add vertical interest to borders.
Do I need to deadhead the flowers?
Yes, deadheading spent flowers will help to prolong the flowering period throughout the summer.
What is the soil preference for Penstemon Barbatus Mix?
They prefer well-drained soil and thrive in a sunny location.
Are these suitable for attracting wildlife?
Yes, they are an RHS pollinator favourite and are great for attracting beneficial insects like bees and butterflies.
Troubleshooting
Seeds do not germinate
Ensure consistent moisture and the correct temperature range (15-20°C) during germination. Check if compost is too compacted.
Seedlings are leggy or weak
Provide adequate light after germination and avoid shading seedlings from direct sunlight too early. Ensure they are not overcrowded.
Plants fail to flower
Confirm the plants are receiving sufficient sunlight. Ensure adequate spacing and avoid over-fertilization, which can promote foliage over flowers.
Perennial does not return in spring
Ensure plants were cut back in winter and protected from extreme frost if necessary. Check soil drainage, as waterlogged roots can cause perennial loss.
Pros and Cons
Pros
- Provides long-lasting summer color with mixed flower shades.
- Hardy perennial nature means it returns each year.
- Attracts beneficial pollinators to the garden.
- Suitable for various garden settings, including pots.
- Relatively easy to care for with minimal aftercare.
Cons
- Requires indoor sowing and careful transplanting.
- Needs a sunny location for best performance.
- Can take time to establish for full perennial return.
- Requires adequate spacing (45cm) to grow well.
Setup, Compatibility & Care Instructions
Sowing Indoors:
- Fill a seed tray with moist seed compost.
- Sow seeds thinly on the surface and lightly cover with compost.
- Maintain a temperature of 15-20°C and keep the compost consistently moist.
Growing On:
- Keep seedlings in a bright location, avoiding direct sun.
- Once large enough to handle, transplant seedlings into trays, spacing them about 5cm apart in potting compost.
Hardening Off & Planting Out:
- Gradually acclimate the young plants to outdoor conditions over 2-3 weeks.
- Plant out from early summer onwards, ensuring 45cm spacing between plants.
Compatibility:
- Thrives in full sun.
- Prefers well-drained soil.
- Suitable for beds, borders, and pots.
Care:
- Deadhead spent flowers to encourage further blooming.
- In winter, cut the plants back to ground level.