Common pepperweed (Lepidium densiflorum)

Common pepperweed

Also known as: Common peppergrass, Apetalous peppergrass, Green-flower pepperweed, Dense-flower pepper-grass

Common pepperweed (Lepidium densiflorum) is an annual or biennial herb that is indigenous to North America, but which is listed as a noxious weed in many parts of the continent, as well as in non-native areas. The species is introduced in Europe and Asia.

Scientific classification

Species

Common pepperweed (Lepidium densiflorum)

Mustards, capers, and allies

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Annual, Biennial

Lifespan

Herb

Plant Type

All year round

Bloom Time

20 cm to 30 cm

Plant Height

30 cm

Spread

20 - 35 ℃

Ideal Temperature

Images of Common pepperweed

Distribution of Common pepperweed

Distribution Map

Common pepperweed is naturally indigenous to a major region in North America. It has been introduced to numerous other areas across Europe, Asia, and both North and South America, as well as selected countries in Oceania. This plant has established itself in different climates, spanning from temperate to boreal, indicating a significant adaptability to varying environments.

Native

Cultivated

Invasive

Introduced

No species reported

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Hemisphere Trend Curve

Northern

Sorthern

Care Guide for Common pepperweed

Every week

Water

Full sun

Sunlight

20 - 35 ℃

Ideal Temperature

Water: Originating from arid regions, common pepperweed is drought-tolerant, preferring drier conditions. Watering once a week is sufficient, with more frequent watering during active growth. Typically an outdoor annual herb, it thrives with minimal moisture, aligning with its natural habitat's sporadic rainfall.

Fertilize: For common pepperweed, regular fertilization is vital for growth. Use balanced and high-nitrogen fertilizers during growth periods, applying quarterly. Adjust dosage to prevent nutrient burn, and choose granular or liquid forms for even distribution. Following these practices will enhance the health and resilience of common pepperweed.

Pruning: Common pepperweed, characterized by small white flowers and dense foliage, should be pruned in early to late spring. Remove dead stems and thin overcrowded areas to improve air circulation and sunlight. Regular pruning prevents invasiveness and preserves aesthetics, using sanitized tools to avoid disease spread.

Propagation: Common pepperweed, part of the Brassicaceae family, prefers disturbed soils and is mainly propagated by sowing. Scatter seeds onto prepared soil, lightly covering them, and keep moist until germination. Thin seedlings to avoid overcrowding. Common pepperweed is hardy and establishes quickly in favorable conditions.

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