Carduus nigrescens

Carduus nigrescens is a type of plumeless thistle that produces bright purple buds and spiky green leaves. This herbaceous perennial is often considered a noxious weed as it quickly takes over disturbed land. Goldfinches are frequent visitors to this plant as they adore its seeds.

Scientific classification

Species

Carduus nigrescens (Carduus nigrescens)

Asters bellflowers fanflowers and allies

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Biennial

Lifespan

Herb

Plant Type

30 cm to 60 cm

Plant Height

2 cm to 4 cm

Flower Size

20 - 35 ℃

Ideal Temperature

Care Guide for Carduus nigrescens

Every week

Water

Full sun

Sunlight

20 - 35 ℃

Ideal Temperature

Water: Carduus nigrescens thrives in moderate climates with consistent moisture. Drought-tolerant, it benefits from weekly watering to maintain water balance. Hardy and ideally suited for outdoor growth, carduus nigrescens is a low-maintenance plant that endures varying rain patterns without affecting its growth cycles.

Fertilize: Carduus nigrescens thrives with balanced nutrition fertilizers during the growing season and high nitrogen fertilizers in early spring for foliage. Fertilize quarterly, applying less in dormancy and more during active growth. Always water post-fertilization to enhance nutrient absorption and protect roots.

Pruning: Carduus nigrescens is a biennial or perennial herb with spiny stems and purple flowers. Prune in early to late spring, removing dead stems and spent flowers to control spread, enhance aeration, and reduce pests. Regular pruning boosts vigor and promotes healthy growth.

Propagation: Carduus nigrescens propagation involves sowing seeds in a well-drained, organic-rich medium to promote germination. Consistent moisture without waterlogging is essential, along with precise planting depth. Gentle handling during transplanting preserves root integrity, aiding healthy establishment in permanent locations.

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Care Guide for Carduus nigrescens

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