Wildflowers of Toronto's High Park​​

Hawkweed 
Family: Composite/Aster
Genus: ​​Hieracium 

Field hawkweed or King Devil
​H.caespilosum
Introduced
Perennial

Blooms: June to July
Habitat: fields and waste places

​Height: up to 90 cm
​Flower head: 1.5 cm in clusters of 4+
 
Stem: hairy
Leaves: A basal rosette, hairy.

Spreads by stolons (runners)
Canada hawkweed
​H.canadense
Native

Blooms: Late summer and fall
Habitat: disturbed areas

​Height: up to 1.5 m
​Flower head: 2.5 cm  
 
 Leaves: Alternate, sharply toothed