Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Asteraceae

Genus:

Bidens

Species:

Bidens gardneri

Growth Characteristics

Life Cycle:

Annual

Growth Habit:

Forb/herb

Light Requirements:

Full Sun

Drought Tolerance:

Medium

Bloom Months:

may, jun, jul, aug, sep, oct, nov

Bloom Colors:

yellow

Native Range

United States: Hawaii

Keystone Species Ranking

Bee Keystone:

★★★☆☆ Based on number of native bee species using this genus for pollen and nectar (Source: National Wildlife Federation)

Soil Requirements

Soil Type:

sandy, well-drained, nutrient-poor soil

pH:

5.5 - 7.0 (slightly acidic to neutral)

Drainage:

excellent drainage required

Moisture:

dry to moderate

Notes:

adapted to coastal and rocky habitats