Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Asteraceae

Genus:

Hieracium

Species:

Hieracium sabaudum subsp. rigidicaule

Growth Characteristics

Life Cycle:

Perennial

Growth Habit:

Forb/herb

Height:

100 cm

Drought Tolerance:

Medium

Bloom Months:

jul, aug, sep, oct

Bloom Colors:

yellow

Wildlife Benefits

Bees:

★☆☆☆☆ Documented bee visitation (GBIF)

Butterflies & Moths:

★☆☆☆☆ Documented Lepidoptera association (GBIF)

Keystone Species Ranking

Pollen Specialist Bee Keystone:

★☆☆☆☆ Native pollen specialist bee species supported by this genus (NWF)

Garden & Ecology Notes

Minimum Light:

Part Shade

Best Light:

Full Sun, Part Sun

Habitat:

Disturbed, Woodland

Wildlife Value:

bees, butterflies

Ecology:

A late-blooming European hawkweed typical of open woodlands, forest edges, heaths, and disturbed ruderal sites such as roadsides and railway verges. Readily colonizes disturbed, acidic, and nutrient-poor soils via light, wind-dispersed achenes.

Soil Requirements

Soil:

sandy — also tolerates loam, rocky, clay

pH:

acidic to neutral

Drainage:

well-drained

Propagation & Germination

Notes:

Seeds germinate readily without obligatory cold stratification when exposed to light and moderate temperatures (around 15-20°C).