Lewisia cotyledon

While Lewisia cotyledon is often sold as a potted plant, it is technically an outdoor perennial that thrives in rock gardens or troughs. It requires significant airflow and intense light that is difficult to replicate indoors, so it will perform best on a sunny patio or balcony rather than inside your home.

Excellent drainage is non-negotiable. Because this is a succulent-like perennial, it is highly susceptible to crown rot if the soil stays wet; ensure you use a gritty, well-draining potting mix and avoid letting the plant sit in standing water.

Yes, it is quite hardy. Lewisia cotyledon is rated for USDA zones 4-10, meaning it can withstand freezing temperatures, provided it is planted in soil that drains well so the roots do not freeze in saturated mud.

Yes, it is generally considered deer-resistant. While no plant is entirely deer-proof if the animals are desperate, the succulent texture of Lewisia is typically not on their preferred menu.

It prefers full sun to part shade. In cooler climates, give it as much sun as possible, but if you live in a region with scorching summer heat, provide some afternoon shade to prevent the foliage from burning.

Once established, it is drought-tolerant. Water it regularly while it is getting settled, but allow the soil to dry out significantly between waterings thereafter to mimic its natural, rocky habitat.