Hogweed (Heracleum sphondylium), or Cow Parsnip, is a bold UK native perennial with tall stems and large white flower heads that attract bees, butterflies, and other pollinators. Ideal for moist, fertile soils, it brings height and ecological value to meadows, roadsides, and wetland habitats.

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full description

Hogweed (Heracleum sphondylium), also known as Cow Parsnip, is a tall, native UK wildflower commonly found in grasslands, road verges, and riparian zones. This striking perennial is noted for its large, umbrella-like clusters of white flowers that bloom in summer, standing out in meadows and wetlands. Hogweed is an excellent addition to biodiversity projects, attracting a wide range of pollinators, including bees and butterflies.

It thrives in moist, fertile soils and is perfect for adding height and structure to wildflower meadows, roadside plantings, and naturalised gardens. Hogweed also supports a variety of beneficial insects and wildlife, making it an essential species for habitat creation and restoration.

Features & Benefits
Large, umbrella-shaped clusters of white flowers
Native UK wildflower ideal for moist soils
Supports bees, butterflies, and other pollinators
Adds height and structure to meadows and habitats
Ideal for roadsides, wetland areas, and grasslands

Latin Name:
Heracleum sphondylium

Flowering Time:
June – August

Flowering Height:
1.5 – 2.5 m

Life Cycle:
Perennial

Wildflower Seed Approximate Sowing Rate:
7.5kg per acre (18.5kg per hectare)

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

How to Sow & Preparation
Choose a moist, fertile site with well-drained soil.
Clear any weeds and prepare the soil to a fine, level seedbed.
Broadcast seed evenly across the surface and press lightly into the soil.
Gently firm the soil with a roller or by walking over it.
Water lightly during dry spells to aid germination.
Allow the plant to grow without mowing during its establishment phase.

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.

technical information

Latin Name | Heracleum sphondylium

Flowering Time | June – August

Flowering Height | 1.5 – 2.5 m

Life Cycle | Perennial

Sowing Rate | 7.5 kg per acre (18.5 kg per hectare)

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

Preferred Conditions | Moist, fertile soils; full sun to partial shade

Pollinator Friendly | Yes

Minimum Order Quantity | 10g

Ideal For | Wetlands, road verges, grasslands, meadows, habitat creation