Bitteroot can be grown from seeds outdoors by sowing fresh ripe seeds on the surface when available (late autumn/ early winter). They can grow in either sunny or lightly shaded areas of the garden that have a rich, gritty and moist soil. Ideally the pH that Bitterroot grows in will be of pH 5 to 8.

Will Lewisia spread?

Lewisia are herbaceous or evergreen perennial plants that are native to western America. ... Lewisia are best suited as patio and container plants within rock gardens. You should expect to see Lewisia grow to an approximate height and spread of 50cm (20”).

Can Lewisia be grown indoors?

Lewisias are also suitable for growing in planters, and can even be grown as a house plant if you can provide a 50° environment at night. Indoors, provide full sun and allow the soil to dry before watering.