Tickseed sunflower (Bidens polylepis)

Tickseed sunflower

Also known as: Coreopsis beggarticks

Bidens polylepis is an annual herb up to 1 m tall. It produces as many as 3 yellow flower heads per branch, each head containing both disc florets and ray florets. The species grows in marshes, flood plains, and disturbed sites.

Scientific classification

Species

Tickseed sunflower (Bidens polylepis)

Asters bellflowers fanflowers and allies

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Annual, Biennial

Lifespan

Herb

Plant Type

Late summer, Early fall

Bloom Time

15 - 35 ℃

Ideal Temperature

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Distribution of Tickseed sunflower

Distribution Map

Tickseed sunflower, a plant species with a distribution originally confined to certain tropical and subtropical regions, has expanded its range and is now introduced in parts of Temperate Europe. This expansion reflects its adaptability to new environments, although it may still have a limited presence and be less widespread in non-native areas.

Native

Cultivated

Invasive

Introduced

No species reported

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Care Guide for Tickseed sunflower

Twice per week

Water

Full sun

Sunlight

15 - 35 ℃

Ideal Temperature

Water: Tickseed sunflower originates from moist environments and thrives with consistent hydration. It prefers well-drained soils and should be watered twice a week. As an outdoor plant, tickseed sunflower benefits from rainwater, which supports its growth cycle.

Pruning: Tickseed sunflower thrives with strategic pruning in early to late spring, helping maintain shape and vigor. Focus on removing dead stems and spent flowers, cutting back about one-third of height to promote bushier growth. This practice enhances air circulation and maximizes flowering potential.

Propagation: Tickseed sunflower propagation involves surface sowing in a fertile, well-draining medium that remains moist. Light is essential for germination, which occurs rapidly. Thin seedlings to prevent overcrowding, ensuring healthy growth and vibrant blooms with adequate care.

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