Starry rosinweed (Silphium asteriscus)

Starry rosinweed

Starry rosinweed is characterized by its star-shaped yellow flowers and sturdy, upright stems, which bloom in late summer. Its leaves are arranged in a rosette at the base and are notably heart-shaped with toothed margins. Adapting to its prairie habitat, starry rosinweed's deep root system allows it to thrive in dry, well-drained soil and resist drought.

Scientific classification

Species

Starry rosinweed (Silphium asteriscus)

Asters bellflowers fanflowers and allies

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Perennial

Lifespan

45 cm to 90 cm

Spread

0 - 35 ℃

Ideal Temperature

Summer

Growth Season

Images of Starry rosinweed

Quickly Identify Starry rosinweed

Robust stature reaching 3 feet (91 cm) tall as a herbaceous perennial.

Lemon-yellow flower heads, 1.5 inches (4 cm) in diameter, resembling silver dollars.

Bright yellow flowers, 2-3 inches (5-7.5 cm) wide, with vibrant, daisy-like petals.

Dry, one-seeded achene fruit, brown and ridged, 0.1 inches (2-3 mm) long.

Papery involucre enclosing fruit, providing a distinctive texture.

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Care Guide for Starry rosinweed

Every week

Water

Full sun

Sunlight

0 - 35 ℃

Ideal Temperature

Pruning: Starry rosinweed features bright yellow flowers and sturdy stems. Early spring pruning is essential; cut old stems above new growth, remove damaged parts for airflow, and promote denser growth. This practice manages size, ensuring a vigorous and attractive appearance throughout the growing season.

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