Hosta sieboldii

Plate 1 figs. a–h · 8 separate observations

Hosta sieboldii, photographed by Marco Mussita — fig. b Marco Mussita, CC BY 4.0 / obs. 22669607

Hosta sieboldii, photographed by Yoshimasa Uchiyama — fig. c Yoshimasa Uchiyama, CC BY 4.0 / obs. 57454959

Hosta sieboldii, photographed by Quentin Groom — fig. f Quentin Groom, CC0 1.0 / obs. 49123511

Hosta sieboldii, photographed by Daniel J. Layton — fig. h Daniel J. Layton, CC BY 4.0 / obs. 48614554

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

The specimen a real sheet, in a real collection

Herbarium: Smithsonian, US National Herbarium
Accession: US 1312490
Filed as: Hosta sieboldii (Paxton) J.W.Ingram
Det. by: not recorded on this sheet
Collected: Collector unknown 1910-07-11
Origin: JP
The sheet: View the digitised specimen (CC0 1.0)

A real pressed plant, in a real collection, under the accession number above. Not an illustration of one. We link to the digitised sheet rather than rehosting it, because the holding institutions do not serve their images to third parties reliably and we are not going to show you a picture we cannot actually deliver. Where we hold no openly licensed sheet for a species this section is simply absent, and where a sheet never recorded who determined it, that field stays empty rather than being filled in. Roughly half of all sheets never recorded a determiner, which is ordinary.

Native range 3 botanical countries

Native distribution of Hosta sieboldii, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows.

Region	TDWG code	Continent
Japan	JAP	ASIA-TEMPERATE
Kuril Is.	KUR
Sakhalin	SAK

Not drawn on the map: Kuril Is.. We hold no public-domain boundary for this region, so it is listed rather than guessed at.

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Where it actually grows measured, from 160 observations

Condition	5th percentile	Median	95th percentile
Coldest month, mean daily low	-14.4 °C	-8.0 °C	-0.8 °C
Warmest month, mean daily high	16.3 °C	24.5 °C	29.6 °C
Annual rainfall	731 mm	1,238 mm	2,399 mm
Rainfall in the driest quarter	99 mm	196 mm	354 mm

It is found where winters bring hard frost. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 160 research-grade observations of Hosta sieboldii that carry a coordinate, and this is the range those places actually span. The 5th and 95th percentiles are used rather than the minimum and maximum, because a single cultivated specimen in a heated conservatory should not widen a tropical plant's range to the Arctic.

This is not a hardiness zone. A USDA zone is the average annual extreme minimum temperature. The figure above is the mean daily minimum of the coldest month, which is a different quantity and is typically far warmer. Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.

Also published as 76 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

Funkia albomarginata Hook.
Funkia lancifolia f. albomarginata (Hook.) Baker
Funkia lancifolia var. alba Rob.
Funkia lancifolia var. angustifolia Regel
Funkia ovata f. spathulata Miq.
Funkia ovata var. albomarginata (Hook.) Miq.
Hemerocallis albomarginata (Hook.) H.Vilm.
Hemerocallis sieboldii Paxton
Hosta albomarginata (Hook.) Ohwi
Hosta albomarginata f. alba (Rob.) Hensen
Hosta albomarginata f. kabitan (F.Maek.) Ohwi
Hosta albomarginata f. mediopicta (F.Maek.) Ohwi
Hosta albomarginata f. spathulata Hensen
Hosta albomarginata f. subchrocea (F.Maek.) Ohwi
Hosta albomarginata f. viridis Hyl.
Hosta albomarginata var. alba (Rob.) Hyl.
Hosta atropurpurea Nakai
Hosta atropurpurea f. albiflora Tatew.
Hosta caerulea f. albomarginata (Hook.) Matsum.
Hosta calliantha Araki
Hosta campanulata Araki
Hosta campanulata var. parviflora Araki
Hosta clavata F.Maek.
Hosta decorata L.H.Bailey

and 52 more.

Sourcesevery claim on this page

World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.