Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Asteraceae

Genus:

Bidens

Species:

Bidens × polakii

Growth Characteristics

Growth Habit:

Forb/herb

Height:

120 cm

Drought Tolerance:

Low

Bloom Months:

jul,aug,sep,oct

Bloom Colors:

yellow

Native Range

CZE, Finland, France, GER, Sweden, YUG

Keystone Species Ranking

Pollen Specialist Bee Keystone:

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

Garden & Ecology Notes

Wildlife Value:

bees, butterflies, birds

Propagation & Germination

Stratification:

Cold/moist stratification required — 30–60 days

Germination Time:

7–21 days

Notes:

Seeds require light for germination. Surface sow or barely cover.

Propagation data sourced from Claude AI