Easily grown in average, medium to wet, well-drained soils in part shade to full shade. Prefers moist, organically rich, humusy, slightly acidic soils in part shade. Soil must not be allowed to dry out. This is a stoloniferous plant that will colonize in the garden over time in a non-invasive manner. A light winter mulch will help protect roots.
Tricyrtis, commonly called toad lilies, is a genus of about 16 species of herbaceous perennials from the Eastern Himalayas to the Philippines. They are valued garden plants in large part because of their unique flowers, ability to flower in shade and late summer to fall bloom time.
Genus name comes from the Greek words tri- meaning three and kyrtos meaning humped as the bases of the three outer petals are swollen and sacklike.
Common name presumably relates to the spotting on the flowers.
'Tojen' is a hybrid cultivar that typically grows to 24" tall and is noted for having much larger leaves than any other toad lily in cultivation and for unspotted flowers which are located in clusters (cymes) mostly at the stem ends. The small, lavender, orchid-like, yellow-throated flowers (to 1 inch long) are shaded lighter toward the center. Unusually large, oval to oblong leaves (6-15" long) with parallel veins and clasping leaf bases.
No serious insect or disease problems. Slugs and snails are occasional visitors.
Borders, woodland gardens, shade gardens or naturalized areas. Best sited in areas where they can be observed at close range because the beauty and detail of the small flowers tends to get lost if plants can not be examined and appreciated close up. Good cut flower.