Yerba mansa
Anemopsis californica · Saururaceae
The gardener's calendar
Ideal time to plant yerba mansa: set it out when the soil is neither frozen nor waterlogged, and water generously as it establishes.
ID card
- Family
- Saururaceae
- Plant type
- Perennial herbaceous
- Flowering
- June to September
- Adult size
- 30 to 60 cm tall
- Foliage
- Deciduous, dark green aromatic
- Hardiness
- Zones 5 to 11 (tolerates -15 °C)
- Origin
- Western United States (wetland areas)
- Soil type
- Moist to marshy, rich in organic matter
Care
Watering
Anemopsis californica loves moist soils and must never dry out completely. Water regularly during growth and flowering, maintaining constant moisture without prolonged waterlogging. In winter, reduce watering but don't let the soil become dry.
Light exposure
Place this plant in partial shade to full sun, ideally away from the most intense direct afternoon rays. It tolerates partial shade, which can even promote lusher growth in very hot climates.
Soil type
Choose rich, humus-laden and permeable soil, enriched with well-decomposed potting soil or compost. Anemopsis thrives at the edges of ponds, ditches, or wetland areas: organic soil that is slightly acidic to neutral suits it perfectly.
Fertilizing
Apply balanced fertilizer in spring or well-ripened compost on the surface to enrich the soil. Monthly feeding during the growing season (spring-summer) supports flowering without being essential if the soil is already rich.
Pruning and cleanup
Cut back the clump to ground level in late autumn or early winter, before new growth begins. Remove spent flowers if you wish to extend flowering and maintain a compact shape.
Diseases and pests
Anemopsis is generally robust and rarely troubled by pests. Be careful to avoid persistent waterlogging, which can encourage rot. Occasionally inspect leaves for any signs of problems.
Did you know?
Anemopsis californica is called 'Yerba del sapo' (toad's grass) in North and South America, as it naturally grows in wetland areas where amphibians live. Its white spike flowers emit a subtle fragrance and its crushed leaves release a very characteristic aromatic scent, making it a traditional medicinal plant among Native American peoples.
Where to buy it
Plant in spring or early autumn, avoiding spells of intense heat. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, April, May, September.
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Tips generated and checked by Viridia — adapt them to your local climate.