Common tarweed (Centromadia pungens)

Common tarweed

Also known as: Smooth tarplant

Centromadia pungens is an herb up to 1.2 m tall. It produces arrays of numerous yellow flower heads with both ray florets and disc florets.

Scientific classification

Species

Common tarweed (Centromadia pungens)

Asters bellflowers fanflowers and allies

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Annual

Lifespan

Spring, Summer, Fall

Bloom Time

Deciduous

Leaf type

Images of Common tarweed

Distribution of Common tarweed

Distribution Map

Common tarweed is native to western North America. The plant has extended its reach as an introduced species across parts of the northern hemisphere, particularly in temperate zones. While it thrives naturally in its original range, common tarweed's presence in other regions might result from either accidental introduction or deliberate horticultural activities.

Native

Cultivated

Invasive

Introduced

No species reported

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Care Guide for Common tarweed

Every week

Water

Full sun

Sunlight

Water: Originating from dry habitats, common tarweed thrives with minimal moisture, demonstrating drought tolerance. It requires weekly watering without over-saturation. Accustomed to sporadic rainfall, common tarweed's growth cycle is influenced by seasonal rains, affecting its active growth and dormancy periods.

Fertilize: For common tarweed, use balanced fertilizers in spring, with high-nitrogen variants during growth phases. Adjust application seasonally; reduce in winter, increase in summer. Ensure even distribution and adhere to label instructions to promote vigour and flowering while preventing root burn for optimal common tarweed care.

Pruning: Common tarweed features sticky leaves and yellow flowers, thriving with early to late spring pruning. Key practices include removing dead branches and thinning growth for better air circulation, boosting health and flowering. Clean tools are essential to avoid disease spread.

Propagation: Originating from the Asteraceae family, common tarweed thrives in well-drained soils with full sunlight. Directly sow seeds in moist conditions for germination, allowing for proper spacing to reduce nutrient competition. Handle delicate roots gently during transplantation to promote healthy growth.

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