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1.Bitter Root — Overview
Bitter Root (Lewisia rediviva) is a remarkable herbaceous perennial native to the challenging environments of western North America. This low-growing species typically achieves a modest height of 10 to 30 cm. Its vegetative phase is characterized by a distinctive basal rosette of fleshy, succulent, lanceolate leaves, which can reach up to 20 cm in length and 3 cm in width.
These leaves are notable for their smooth margins and typically senesce and wither by the onset of the plant's spectacular flowering period. The root system is equally unique, featuring fleshy, radiating, and somewhat tuberous roots that serve as crucial storage organs, enabling the plant to endure harsh, arid conditions.
From late spring through early summer, Lewisia rediviva produces exquisite, solitary flowers on short, sturdy stems, usually 1-3 cm long. Each vibrant blossom, spanning up to 4 cm across, presents a captivating array of colors from delicate pale pink to rich, deep magenta. The flowers exhibit a star-like structure, distinguished by 10 to 19 petals, and are known for their nyctinastic movement, closing at night and reopening with the morning sun.
The plant's green, fleshy stems contribute to its overall succulent appearance. Bitter Root thrives across a broad elevational range, from 60 to 3000 meters, showing a preference for rocky, well-drained soils. It is commonly found in mountainous regions, open grasslands, woodlands, and sagebrush shrublands, demonstrating remarkable adaptability to diverse soil types including shale, sand, clay, granite, serpentine, and talus.
Geographically, Lewisia rediviva is widely distributed, extending from British Columbia in the north, south through the eastern Cascade Ranges of Oregon and Washington, into California's Coast Ranges, Klamath Mountains, San Jacinto Mountains, and Transverse Ranges. Its range also stretches eastward across Montana, Colorado, and Arizona.
Taxonomically, Bitter Root belongs to the Montiaceae family, a classification that was formerly encompassed within the broader Portulacaceae family.
Trusted Scientific References
Authoritative external sources for Lewisia rediviva:
1.1.Bitter Root — Key Features
- Striking Floral Display — Produces vibrant pink to magenta, star-like flowers.
- Succulent Foliage — Features a basal rosette of fleshy, lanceolate leaves.
- Tuberous Root System — Possesses thick, radiating roots for water and nutrient storage.
- North American Native — Indigenous to diverse habitats across western North America.
- Ethnobotanical Significance — Historically a crucial food source for numerous Indigenous tribes.
- Nyctinastic Flowers — Blossoms close at night and reopen with the morning sun.
- Drought & Heat Tolerant — Highly adapted to arid, rocky, and well-drained soils.
- Seasonal Bitterness — Roots become intensely bitter after the spring harvest window.
- High Elevational Range — Thrives from 60 to 3000 meters in elevation.
- Challenging Cultivation — Requires specific dormancy and soil conditions for successful growth.
1.2.Bitter Root — Quick Summary
- Lewisia rediviva is a resilient, low-growing perennial native to western North America.
- Features striking pink-magenta, star-like flowers and succulent basal leaves.
- Its fleshy, tuberous roots were a vital traditional food source for indigenous peoples.
- Known for developing an intense bitter taste as the plant matures into summer.
- Cultivation is challenging, requiring specific dry, hot dormancy periods.
- Sustainable harvesting is critical due to the plant's vulnerability.
2.Bitter Root — Scientific Identity
3.Bitter Root — Categories & Tags
4.Bitter Root — Appearance & Identification
5.Bitter Root — Water Requirements
- Seed Propagation — Best started from fresh seeds collected or purchased in early October, as transplanting roots typically kills the wild plant.
- Initial Sowing — Place seeds directly on top of well-drained soil in 4-6 inch pots, covering lightly with soil and then a quarter-inch layer of gravel to secure them.
- Natural Watering — Do not water initially; allow natural rainfall to provide moisture. Place containers outdoors in full sun and protect from wildlife.
- Germination & Growth — Seeds typically germinate in late winter or early spring. Maintain full sun exposure.
- Summer Dormancy — Crucially, stop watering in May when leaves yellow. Move pots to the hottest, driest spot available to mimic natural summer baking.
- Out-planting — In the summer or fall of the third year, once plants are dormant and mature enough, transplant them into full sun and very well-drained soil.
- Spacing & Crown — Plant individual Bitter Root plants 4-6 inches apart, ensuring the crown is at the soil surface. Mark the spots and rely solely on rain for water.
- Weed Control — Periodically weed around the plants to ensure they receive ample full sun and reduce competition for resources.
Reviewed by the Flora Medical Global Botanical Review Panel
Multi-disciplinary editorial group · Botany · Ethnobotany · Herbal-medicine literature
Who reviewed this: This page was checked by the Flora Medical Global Botanical Review Panel — an in-house editorial group of botany graduates, ethnobotany researchers, and horticulture practitioners who collectively maintain our 7,000+ plant encyclopedia. Meet the team.
Our 4-step verification process
1. Taxonomic verification
Scientific names and synonyms cross-checked against Kew POWO, World Flora Online, and The Plant List.
2. Phytochemical & medicinal cross-reference
Active compounds, traditional uses, and reported activities are cross-referenced with PubMed, USDA Dr. Duke's database, and peer-reviewed ethnobotanical literature.
3. Conservation & distribution check
Distribution, ecology, and conservation status confirmed against GBIF occurrence records and the IUCN Red List.
4. Editorial & safety review
Every entry passes an editorial pass for clarity, originality, and safety notices (toxicity, contraindications, dosage caveats) before publication.
Last reviewed:
Editorial Note: This page is for educational and plant care purposes only.
Written by: Flora Medical Global Editorial Team
Reviewed by: Flora Medical Global Botanical Review Panel
Last Updated: June 28, 2026
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