A compact, clump-forming perennial. Clusters of scented, clear blue flowers with yellow centres float above a lush mound of attractive fern-like leaves in spring and summer. Height 45cm. Spread 40cm. Prefers sun/partial shade, moist well-drained soil. Hardy.
Polemonium ‘Northern Lights’ is a compact, clump-forming perennial valued for its fragrant clear blue flowers with yellow centres and attractive fern-like foliage. It is an excellent choice for borders, woodland gardens, and containers, providing colour and texture from spring into summer.
PLANTING and AFTERCARE GUIDE
Best Planting Time
Spring: Plant Polemonium ‘Northern Lights’ in spring when the soil is workable and beginning to warm. This allows the roots to establish before active growth starts.
Early Autumn: Early autumn is another ideal planting time, giving the root system time to settle before dormancy and promoting stronger growth the following season.
Site Selection
Sunlight: Polemonium ‘Northern Lights’ thrives in full sun or partial shade. A position with morning sun and light afternoon shade helps produce healthy foliage and abundant flowers.
Soil: Moist, fertile, well-drained soil enriched with compost or well-rotted organic matter provides the best growing conditions.
Planting Instructions
Prepare the Hole: Dig a hole twice the width and the same depth as the root ball to allow the roots to spread freely.
Soil Preparation: Mix compost or organic matter into the excavated soil to improve fertility, drainage, and moisture retention.
Planting: Position Polemonium ‘Northern Lights’ so the top of the root ball is level with the surrounding soil, then backfill gently and firm lightly.
Watering After Planting: Water thoroughly after planting to settle the soil and encourage strong root establishment.
Watering Requirements
Growing Season: Keep the soil evenly moist during active growth, particularly while the plant is establishing and during prolonged dry periods.
Dormant Season: Reduce watering once growth slows, but do not allow the soil around Polemonium ‘Northern Lights’ to dry out completely.
Feeding
Spring: Apply a balanced fertiliser in early spring to encourage lush foliage and plentiful flowers.
Mid-Season: A light supplementary feed after the first flush of blooms will help maintain plant vigour.
Pruning
Deadheading: Remove faded flower stems regularly to keep the plant tidy and encourage additional blooms where possible.
Seasonal Care: Trim away damaged or tired foliage after flowering to promote fresh growth and maintain an attractive appearance.
Mulching
Spring: Apply a layer of organic mulch around the base to retain moisture, suppress weeds, and improve soil quality.
Later in the Year: Replenish the mulch as needed, ensuring it stays clear of the crown to maintain healthy growth.
Supporting the Plant
Natural Habit: Polemonium ‘Northern Lights’ has a compact, upright habit and rarely requires staking, although neighbouring plants can provide gentle support if needed.
Final Tips
Polemonium ‘Northern Lights’ is a reliable, low-maintenance perennial that brings delicate colour, fragrance, and fine-textured foliage to the garden. With fertile, moist, well-drained soil, regular watering during establishment, and simple seasonal care, Polemonium ‘Northern Lights’ will thrive and provide beautiful displays year after year.
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