Growing Zones
7a - 11
Light
Full Sun to Part Shade
Duration
Annual (7) / Perennial (8-11)
Size
~1-4 ft tall
Bidens alba, often known as Beggarticks, Spanish needle, or several other names, is probably the most overlooked native wildflower. This plant is frequently classified as a weed due to its prolific reproduction, yet it is actually a valuable native wildflower that performs an important function in attracting pollinators. It is a larval host for the Dainty Sulphur Butterfly and a popular nectar source for other butterflies. It is a commonly used nectar source in honey production. Additionally, the young leaves and blooms are edible.
The name “Bidens” is derived from the Latin words “bis” (two) and “dens” (tooth), referring to the unique seed bristles. The species name “alba” refers to the white tint of the ray florets.
Native range:
AL, CT, FL, GA, LA, MA, MO, NM, NC, PA, SC, Guam, Puerto Rico, Palu, U.S. Minor Outlying Islands, Virgin Islands, and Navassa Island
Bloom Information:
Bloom Color: White with yellow center
Bloom Time: Spring, Summer, Fall, possible Winter
Names:
Scientific Name: Bidens alba (L.) DC.
Plant Family: Asteraceae (Aster Family)
Other Names:
Common Beggarticks, Shepherd’s Needles, Spanish Needles, Butterfly Needles, Hairy Beggarticks, Romerillo
Requirements
Water Needs: Low, Average
Soil Drainage: Dry, well-drained sandy soils to rich, moist soils
Soil Type: Loam, Sand
Soil pH: Acidic, Alkaline, Neutral
Considerations:
A single plant can yield 3,000-6,000 seeds, which are distributed by wind and water but are most commonly attached to fur or clothing. If you don’t want them to take over your garden, you must be consistent in uprooting them before they go to seed.
