Flatpod Rockcress

(Arabis planisiliqua)

Flatpod Rockcress (Arabis planisiliqua)

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Climate Requirements

Precipitation 18" - 37"
High Temp. 73°F - 86°F
Low Temp. 26°F - 38°F

Summary

Arabis planisiliqua, commonly known as Flatpod Rockcress, is a semi-deciduous biennial herb native to Europe and Western Asia. It is often found in dry, rocky habitats, including sagebrush steppe and montane regions. This plant typically grows at a moderate rate to a height of 0.5-1.5 feet (0.15-0.5 meters) and a width of 0.5-1 feet (0.2-0.3 meters). Its appearance is characterized by basal rosettes of oblong leaves and clusters of white flowers that bloom in the spring, which are moderately showy and attract pollinators.

Flatpod Rockcress is valued for its drought tolerance and ability to thrive in poor soils, making it a suitable choice for rock gardens, xeriscaping, and restoration projects. In cultivation, it requires full sun to part shade and well-drained sandy or loamy soils. While it is low-maintenance, it can be susceptible to root rot if overwatered. There are no popular garden cultivars of this species.CC BY-SA 4.0

Plant Description

  • Plant Type: Herb
  • Height: 0.5-1.5 feet
  • Width: 0.5-1 feet
  • Growth Rate: Moderate
  • Flower Color: White
  • Flowering Season: Spring
  • Leaf Retention: Semi-deciduous

Growth Requirements

  • Sun: Full Sun, Part Shade
  • Drainage: Fast, Medium

Common Uses

Border Plant, Low Maintenance, Rock Garden

Natural Habitat

Native to Europe and Western Asia, particularly in dry, rocky habitats including sagebrush steppe and montane regions

Other Names

Common Names:

Scientific Names: Arabis planisiliqua, Arabis alpina, Arabis contracta subsp. gerardi, Arabis gerardi, Arabis gerardii, Arabis hirsuta subsp. gerardi, Arabis hirsuta subsp. planisiliqua, Arabis hirsuta var. crassior, Arabis hirsuta var. gerardi, Arabis hirsuta var. kochii

GBIF Accepted Name: Arabis planisiliqua