Species Hosta montana 'Oba Giboshi' – Wild Type Elegance

The species Hosta montana (known in Japan as 'Oba Giboshi') represents the wild, unselected form of this majestic species—bold, architectural, and deeply veined. This is the foundation upon which countless cultivars have been built.

Botanical Profile

Family:	Liliaceae (lil-ee-AY-see-ee)
Genus:	Hosta (HOSS-tuh)
Species:	montana (MON-tah-nuh)
Japanese Name:	Oba Giboshi

Species Characteristics

H. montana is one of the most impressive hosta species, forming a large, upright, vase-shaped mound of very large, broadly ovate leaves. The foliage is deeply veined, giving it a pronounced corrugated texture. The leaves are thick, leathery, and a rich, deep green. The plant has tremendous vigor and substance. In early summer, tall scapes bear pale lavender flowers. It is native to Japan, where it grows in mountainous regions.

Garden Value of the Species

Growing the straight species offers several advantages: maximum vigor and disease resistance, architectural form unaltered by selection for variegation, and genetic diversity. It serves as a magnificent structural plant in large shade gardens. The thick leaves are highly slug-resistant. It tolerates more sun and drier conditions than many cultivars once established.

Japanese Heritage

The name 'Oba Giboshi' (大葉擬宝珠) translates to "large-leaved giboshi," giboshi being the traditional Japanese name for hosta. This species has been cultivated in Japanese gardens for centuries and is a parent of many modern large hostas, including 'Aureomarginata' and 'Titanic'.