It is a biennial, growing as a rosette the first year and flowering the second.

How do I stop it from spreading?

Cut the flower heads off before they go to seed.

Plant guide

Teasel.

Dipsacus fullonum

Pronounced dip-SAK-us ful-OH-num

Also known as Common Teasel, Draper's teasel, Fuller's Teasel, Teasel, Venuscup Teasle, Wild Teasel

wild teasel — Photo by j_osborn (CC BY) via iNaturalist

Teasel is a striking biennial plant known for its unique, prickly flower heads that persist long after the blooms fade. It is a favorite in wild gardens because it attracts bees and butterflies. You will notice it forms a low rosette of leaves in its first year before sending up a tall, spiky stalk in the second.

Another photo of Teasel — Photo by Andrew Fielding (CC BY) via gbif

At a glance

Care level: Easy
Plant type: Biennial
Light: Full sun
Indoor light: Direct sun
Water: Every 7 to 14 days
Mature size: 6 feet
Growth rate: Fast
Hardiness: USDA 3 to 9
Bloom time: Mid to late summer

Care

Plant these in a sunny spot with plenty of space to accommodate their height. Keep an eye out for aphids on the flower heads, and make sure the soil does not dry out completely during the first year. Since they are biennials, they will die back after setting seed, so let them drop seeds if you want them to return.

Watering: Keep the soil consistently moist while the plant is establishing its root system.
Feeding: They generally do not need extra fertilizer if grown in decent garden soil.
Pruning: Cut back the dead stalks in late autumn or early winter to tidy up the garden.
Repotting: These are best grown directly in the ground rather than in containers.
Soil: Well draining, clay or loam
Soil pH: Neutral to alkaline
Temperature: -25 to 35°C
Humidity: 40 to 70%
Drought tolerance: Moderate
Lifespan: Biennial, typically 2 years.
Deer and rabbits: High

Safety

People: There is no significant toxicity reported for humans.
Children: The sharp spines on the stems and leaves pose a significant risk of injury to small children.
Contact allergens: The stiff, hooked spines on the stems and leaves can cause mechanical skin irritation.
Airborne allergens: The pollen may cause mild respiratory irritation in sensitive individuals.
Edibility: The plant is not considered edible and should not be consumed.

How to identify it

Tall, prickly, upright flowering stalks
Egg shaped, spiky flower heads
Opposite leaves joined at the base
Small, pale purple or white flowers
Coarse, hairy, and thorny stems

Height: 1 to 2m
Spread: 0.3 to 0.6m
Leaves: green, deciduous
Flowers: lavender, pink, white, 2 to 10cm
Fruit: brown, Autumn

Problems to watch for

Powdery MildewCommon
AphidsUncommon
Root RotUncommon
Slugs and SnailsUncommon

By symptom

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Growing it

Propagation: seed
When to plant: spring, autumn
Overwintering: No special winter care is needed as the plant is hardy and naturally goes dormant.
In containers: Not recommended for containers due to its large size and deep taproot.

Direct Sowing

1. Collect seeds in late autumn.
2. Scatter seeds on bare, disturbed soil.
3. Press into the soil surface without burying them deep.

Plant in large drifts to create a structural focal point in a wild meadow garden.

Grows well with

Common Milkweed · They share similar soil and light requirements in meadow settings.
Goldenrod · Both plants provide excellent late season resources for pollinators.

Similar species

Cutleaf Teasel · It is a closely related invasive species with similar growth habits.

Science

Family: Caprifoliaceae
Genus: Dipsacus
Order: Dipsacales
Class: Magnoliopsida
Native range: Europe, Western Asia, and Northern Africa.
Conservation: It is considered an invasive weed in many parts of North America where it outcompetes native flora.

It thrives in disturbed soils and open fields where it can quickly colonize bare ground.

Value to wildlife: nectar source, winter seed source for birds
Pollinators: bees, butterflies, moths
Uses: dried floral arrangements, wildlife gardens, pollinator habitat

Through the year

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Flowering

Fruiting

Foliage

Ecological indicators

Salinity: 2/9
Soil reaction: 6/9
Light: 8/9
Temperature: 5/9
Moisture: 5/9
Nutrients: 5/9

Taxonomy resolved against GBIF.

Questions people ask

Is it a perennial?: It is a biennial, growing as a rosette the first year and flowering the second.
How do I stop it from spreading?: Cut the flower heads off before they go to seed.

Where the name comes from

The genus name Dipsacus comes from the Greek word for thirst, referring to the water collecting leaves, while fullonum refers to the fullers who used the heads for cloth.

Good to know

Teasels are monocarpic, meaning they die after flowering once.
The cup shaped leaves collect rainwater, which can drown small insects.
A single plant can produce thousands of seeds that remain viable for years.

Also in

Deer-resistant plants

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This guide was generated with AI on September 26, 2026 and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.