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B&Q£4.99Visit shop B&Q - Polemonium Boreale Heavenly Habit 1 Seed Packet (20 Seeds)
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The Thompson & Morgan Polemonium Boreale 'Heavenly Habit' is a versatile perennial ideal for home gardeners looking to add compact, vibrant color to the front of borders or patio containers. Its key benefit is its reliable, long-lasting violet-blue blooms that appear throughout the summer months when managed with proper dead-heading. While it is easy to cultivate, growers should note that it requires consistent moisture and well-drained soil to thrive, making it less suitable for extremely dry or sandy garden environments.
| Model Part Number | 26220 |
|---|---|
| Brand | Thompson & Morgan |
You can sow the seeds anytime from late winter through mid-summer.
Yes, their dwarf habit makes them an excellent choice for container growing.
Sow the seeds approximately 1/16in (1.5mm) deep in seed-sowing compost.
As a perennial, keep the soil moist and well-drained, and continue to dead-head during the flowering season.
Yes, if sown early enough in the season, they can flower within their first year.
Plant them at a spacing of 30cm (12in) apart to allow for proper airflow and development.
Verify that your temperature is within the 20-25C range and consider lowering the ambient temperature at night to mimic natural conditions.
Check soil moisture levels; these plants prefer moist soil and will show signs of stress if allowed to dry out completely.
Ensure you are consistently dead-heading spent flowers to encourage the plant to produce new blooms.
To start your seeds, sow them 1.5mm deep in high-quality seed compost. Place the tray in an environment kept between 20-25C (70-75F) to ensure germination, which typically occurs within 7 to 21 days; note that slightly cooler nighttime temperatures can actually improve results. Once seedlings are large enough, transplant them into 7.5cm pots. Before moving them to their permanent outdoor position in late spring, ensure you gradually acclimatize them to outdoor conditions. Space plants 30cm apart in soil that stays moist but drains well to prevent root rot. Keep the soil enriched with organic matter for best results in full sun or semi-shade locations.
