Hosta gracillima

Hosta gracillima (F. Maekawa 1936/AHS 1993)

Subgenus Schmid Giboshi Zonneveld Giboshi
Section Schmid Tardanthae Zonneveld Nipponosta
Hosta Library species file Hosta gracillima
Origin Japan, south coast of Shikoku Island, Kochi Prefecture.  See Map.
Japanese name Hime Iwa Giboshi = the small rock hosta
Korean name Dol-san-bi-bi-chu
Plant 20–24 cm diameter x 7.5–10 cm high (5–7 x 0.75").
Leaf Petiole 3–5 x 0.2 cm wide (1.2–2 x 0.10" wide), semi-erect, green.
Leaf 2.5–6 x 1.1–2 cm (1–2.5 x 0.50–0.75"), semi-erect, ovate-lanceolate, acuminate tip, undulate, wavy in the margin, rigid, smooth, glossy green above, glossy lighter green below, contracted at the base.
2–3 pairs of veins, sunken above, smooth, below.
Inflorescense Scape 20–25 cm (8–10"), erect, but leaning, green, purplish red dotted at base.
Fertile bracts short, navicular, awl-shaped, spreading, green, rigid, persisting after anthesis.
Raceme short, few flowers. Flowers 2.5–3.5 cm long, 2.5 cm broad (1–1.5 x 1"), long narrow tube, perianth suddenly broadly funnel-shaped, in the central part very slightly dilated bell-shaped, lobes spreading rapidly, recurving, wide open, blunt, lavender outside, purple-striped inside, short pedicels, slightly projecting stamen.
Anthers purple.
Blooming Time September
Fertility Fertile
Growing conditions  
Suitable for containers  
Special remarks  
In Hosta Mill Collection Yes
  • H. 'Saizaki' (Saizaki Hime Iwa Giboshi) is a mutant form with deformed lobes and petaloid stamens.
  • H. 'Hydon Sunset' (George/BHHS 1988) = H. gracillima x H. 'Wogon'
  • H. 'Little Wiggler'  (P.& J. Ruh 2005) = H. gracillima x (unknown). This may be a selfed offspring
  • H. 'Medusa' (R. Herold 1993) = H. 'Neat Splash' x H. gracillima
  • H. 'Okazaki' (H. Sugita/P. & J. Ruh 2002) = H. kikutii "white back" x H. gracillima "white back"
  • H. 'Purple Charmer' (P. Ruh 1993) = H. gracillima x H. 'Ogon Koba'
  • H. 'Stormy Dance' (F. Smith NR) = H. gracillima hybrid
  • H. 'Sugar Plum Fairy' (Briggs Nursery) = H. gracillima x (unknown). This may be a selfed offspring