Hawksbeard (Crepis spp.) - How to Grow & Care Guide

Plant Snapshot

Common Name: Hawksbeard
Latin Name: Crepis spp.
Hardiness Zones: USDA zones 4–9 depending on species and origin; colder zones may show dieback and slower growth while warmer zones may allow longer growing seasons or more aggressive self seeding
Typical Height: 4–24 in (10–60 cm) depending on species
Typical Spread: 4–18 in (10–45 cm) rosette or clump forming; may spread by self seeding
Bloom Period: Spring to summer (season varies by species and climate)
Soil Preferences: Prefers well drained soils and tolerates poor or dry soils; avoids waterlogged conditions. Tolerant of neutral to alkaline pH in many species
Light Preferences: Full sun to partial shade; brightest sites favor flowering and vigor
Toxicity: No major toxicity widely reported at the genus level. Not commonly listed as toxic to pets but verify for specific species with local poison control
Propagation: Primarily by seed; achenes are wind dispersed. Some species can be established by transplanting rosettes where applicable

Key Facts

Genus Crepis is a group of herbaceous plants in the aster family
Flower heads are usually yellow and dandelion like with only ligulate florets
Plants commonly form a basal rosette of leaves and produce one or more flowering stems
Fruits are achenes with a pappus that promotes wind dispersal
Many species are native to temperate regions of the northern hemisphere
Several Crepis species behave as self seeding weeds in disturbed sites
Soil tolerance is broad but plants prefer well drained conditions
Propagation is primarily by seed

Hawksbeard is a group of herbaceous asters with yellow dandelion like flower heads that are useful for naturalizing open sunny sites but several species self seed and can behave like weeds. Plants form a basal rosette and then one or more flowering stems topped with ligulate florets.

Identification

Flower heads are usually yellow and resemble small dandelions with only ligulate florets. Plants commonly make a basal rosette of leaves and send up flowering stems. Typical height varies by species from about 4 to 24 inches and spread is often a similar rosette or clump size. Fruits are achenes with a pappus that promotes wind dispersal.

Where to grow and best uses

Many Crepis species do best in full sun or partial shade in well drained soil and tolerate lean or dry conditions. At the genus level the plants are generally suited to USDA zones 4 to 9 depending on species. Use hawksbeard for naturalized wildflower patches or lean sites where low maintenance and self seeding are acceptable, but expect colonies to form in disturbed or open areas.

Planting and basic care

Propagation is primarily by seed. Sow when local conditions support seed germination or introduce plants by transplanting rosettes in areas where that is practical. Bright sites favor flowering and poor drainage leads to root problems and reduced vigor. These plants tolerate dry periods once established and need little fertilizer.

After flowering and limiting spread

Spent flower heads produce wind dispersed seed that can renew populations. Deadhead or collect seed to limit self seeding. Pull seedlings when they are small to prevent colonies from forming. Cutting back flower stems after bloom reduces seed set and helps contain spread.

Propagation notes

Fruits are achenes with a pappus adapted for wind dispersal so seed moves readily. Some species can be established by transplanting rosettes, but most introductions are from seed. Self seeding makes hawksbeard persistent in appropriate sites.

Frequently asked questions

How fast does Hawksbeard grow?: Growth rate varies by species and conditions. Many form a basal rosette and produce flowering stems within a single season, and self seeding can create noticeable new plants the following year.
Is Hawksbeard invasive?: Several species behave as self seeding weeds in disturbed sites and can naturalize quickly. Invasiveness depends on the species and local conditions.
Where will Hawksbeard spread most easily?: Open sunny disturbed areas with well drained soil are most likely to support spread because seed establishes readily in exposed soil.
Is Hawksbeard toxic to pets?: No major toxicity is widely reported at the genus level but toxicity information varies by species so verify with local poison control for specific cases.
How do I stop Hawksbeard from reseeding?: Remove spent flower heads, collect seed before dispersal and pull young seedlings. Replacing bare ground with a dense planting or mulch reduces opportunities for seed to establish.
Can Hawksbeard be grown in containers?: Some small species may suit containers if the site is sunny and drainage is excellent. Suitability depends on the species chosen.