Lupin Blue Javelin Seeds

The Lupinus polyphyllus Blue Javelin is an elegant, early-flowering annual that produces tall, spiky blooms in rich indigo blue, standing proudly above lush green foliage.

 

A stunning addition to cottage gardens and borders, this variety is specially bred for longer lasting flowers and improved weather resistance ensuring a spectacular display throughout summer.

 

With its upright, architectural form, Blue Javelin reaches a height of 120 cm, thriving in fertile well-drained soil and full sun.

 

A magnet for bees, butterflies and other pollinators, this lupin enhances biodiversity while bringing vibrant colour and structure to garden beds.

 

Ideal for cut flowers, its long stems and striking blooms make it perfect for indoor arrangements.

 

Seed Qty: Approx. 15

 

Sow: February – April (indoors) or April – May (outdoors)

Germination: 14 – 21 days

Soil: Well-drained, fertile soil; prefers neutral to slightly acidic pH

Height: 120cm

Flowering: June – September

Companion Plants: Delphiniums, Foxgloves, Salvia

Avoid Planting With: Brassicas (as lupins fix nitrogen in the soil)

 

For stronger plants, remove faded flower spikes to encourage continuous blooming. Water regularly during dry spells and mulch in autumn to protect roots over winter.

 

Sowing Instructions

 

Indoors:

Sow seeds in trays or pots of moist, free-draining compost from February to April. Lightly cover with compost and keep at 15–20°C. Once seedlings are large enough to handle, transplant into individual pots and grow on before planting out after the last frost.

 

Outdoors:

Sow directly into prepared soil from April to May for overwintering. Place seeds 1 cm deep and 30 cm apart. Thin seedlings as needed once established.

 

A sophisticated and reliable perennial, Lupin Blue Javelin is perfect for pollinator-friendly gardens, mixed borders, and striking floral displays—a must-have for lovers of classic garden plants.