Hairy St John’s-wort (Hypericum hirsutum) is a tall, native UK wildflower with soft, downy stems and clusters of pale yellow flowers that bloom throughout summer. This hardy perennial is ideal for enriching grasslands, road verges, and woodland margins, providing valuable nectar for bees and other pollinators.

Thriving in dry, calcareous or neutral soils, Hairy St John’s-wort prefers sunny to lightly shaded positions and is well suited to conservation projects, meadow creation, and biodiversity-focused planting schemes. Its extended flowering season and height make it an excellent structural addition to any wildflower area.

Features & Benefits
Soft yellow flowers that attract pollinators
UK native perennial suited to dry, grassy habitats
Prefers sun or light shade and calcareous soils
Soft, hairy foliage adds textural variety
Supports biodiversity and pollinator species

Latin Name:
Hypericum hirsutum

Flowering Time:
June – August

Flowering Height:
50 – 90 cm

Life Cycle:
Perennial

Wildflower Seed Approximate Sowing Rate:
0.25kg per acre (0.62kg per hectare)

Sowing Times:
Spring (March – May) or Autumn (August – October)

How to Sow & Preparation
Choose a dry, well-drained site in full sun or partial shade.
Clear the area of weeds and cultivate to create a fine, level seedbed.
Evenly broadcast the seed by hand or spreader.
Gently firm the seed into the soil using a roller or by walking over the area.
Keep moist during germination if conditions are dry.
Manage surrounding grasses through cutting to reduce competition during establishment.

About John Chambers Wildflower Seeds
John Chambers Wildflower Seeds has been a trusted supplier of native UK wildflower seeds for over 35 years. Known for its high-quality, locally sourced seed and outstanding customer service, John Chambers provides ecological solutions for landscape contractors, local authorities, and conservationists focused on creating sustainable, biodiverse landscapes.

Latin Name | Hypericum hirsutum

Flowering Time | June – August

Flowering Height | 50 – 90 cm

Life Cycle | Perennial

Sowing Rate | 0.25 kg per acre (0.62 kg per hectare)

Sowing Period | Spring (March – May) or Autumn (August – October)

Preferred Conditions | Dry, well-drained soils in full sun or light shade

Pollinator Friendly | Yes

Minimum Order Quantity | 10g

Ideal For | Grasslands, roadside verges, woodland margins, conservation areas