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perennial

Hosta

Hosta sieboldiana

Climate-suitable non-native

Growing guidance

Horticultural figures below are practitioner estimates for planning, pending expert review. The botanical record further down is sourced and verifiable.

Current-climate suitability

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Future-climate resilience

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Sun

Shade

Soil moisture

average, moisture-retentive

Heat tolerance

Up to about 34°C

Cold tolerance

Down to about -35°C

Waterlogging tolerance

4/5

Drought tolerance

2/5

Mature size

0.5–0.8 m tall, 1 m spread

Seasonal interest

Summer · Blue green

Maintenance

low

Wildlife supported

General wildlife value 2/5 (verified species relationships are shown only where structured data exists)

How to plant it

General steps for this plant. Save a garden and these become specific to your location, soil and light.

  1. Step 1When to plant

    Plant during March to May or September to November.

    Autumn planting gives roots a head start; spring planting suits cold or wet soils.

  2. Step 2Where to put it

    Choose a shaded position, out of direct midday sun. Allow 1 m of room around it — mature spread is 1 m and mature height 0.5–0.8 m.

    Light in your garden is not answered, so this is the plant's own requirement.

  3. Step 3Preparing the ground

    Dig a hole twice as wide as the root ball and no deeper, loosen the sides, and plant so the top of the root ball is level with the surrounding soil.

    Soil is not answered. This plant grows in average, moisture-retentive conditions.

  4. Step 4Watering while it establishes

    Water thoroughly at planting (5–10 litres), then only when the top few centimetres of soil are dry, through the first growing season.

    Even a drought-tolerant plant (2/5 here) only becomes drought-tolerant once established.

  5. Step 5Mulch

    Spread 5–7 cm of composted bark or garden compost around the plant, keeping it clear of the stem.

    Mulch cuts water loss and suppresses weeds through the first summer, when losses are most likely.

  6. Step 6The first year

    Check it after strong wind and in long dry spells. Little else is needed.

    Maintenance level on the plant record is low.

  7. Step 7What to watch for

    Slugs and snails can strip it in wet seasons. Toxicity: mild. Site it accordingly if children or pets use the space.

    Taken from the plant record and your measured climate figures, not from a general description.

Spacing: about 1 m apart — roughly 10 plants for every 10 m² if planted as a group.

What this guide could not use

  • No location saved, so planting times are general rather than local.
  • Soil moisture is not answered, so soil preparation is general advice.
  • Light is not answered, so the position below is the plant's own preference.
  • Whether you can water is not answered, so watering assumes hand watering.
Answer five questions to make this specific

Built by fixed rules from: Plant record for Hosta (last reviewed 2026-06-01). Planting guide version gf-planting-1.0.0. Timings and volumes are practitioner estimates for planning, not a substitute for local nursery advice.

Known risks or warnings

Slugs and snails can strip it in wet seasons.

Toxicity: mild

Status and jurisdiction

Climate-suitable non-native in United Kingdom (Great Britain).

Register consulted: GBIF Backbone Taxonomy distributions for Great Britain

Record review status: reviewed · last reviewed 2026-06-01 · plant data version gf-plants-2026.09.18. Status claims are never inferred from climate similarity, and growing figures are estimates pending expert review.

Verified botanical record

Accepted scientific name
Hosta sieboldiana (Hook.) Engl.
Family
Asparagaceae (Asparagales)
Rank and status
species · accepted
GBIF record
Taxon 5303933

Recorded as introduced in: Korea, South European Russia

Ranges are exactly as recorded in the GBIF source checklists and may be incomplete for widely cultivated species.

Hosta (, syn. Funkia) is a genus of plants commonly known as hostas, plantain lilies and occasionally by the Japanese name gibōshi. Hostas are widely cultivated as shade-tolerant foliage plants. The genus is placed in the family Asparagaceae, subfamily Agavoideae, and is native to northeast Asia (China, Japan, Korea, and the Russian Far East). Like many "lilioid monocots", the genus was once classified in the Liliaceae. The genus was named by Austrian botanist Leopold Trattinnick in 1812, in honor of the Austrian botanist Nicholas Thomas Host. In 1817, the generic name Funkia was used by German botanist Kurt Sprengel in honor of Heinrich Christian Funck, a collector of ferns and alpines. It was later used as a common name and is referenced in some older literature.

Description from Wikipedia — Hosta (CC BY-SA), shortened and unedited in substance.

Native status and geographic context

  • United Kingdom: climate-suitable
  • United States: climate-suitable
  • Australia: climate-suitable

Native status is never inferred from climate similarity. Plants restricted or invasive in a jurisdiction are excluded from recommendations there.

What to do next

Create a Garden Profile to see whether this plant suits your conditions.

Demonstration data

These figures come from the demonstration dataset kept for testing and as a fallback when the measured climate service is unavailable. They are representative, not observed, and are never presented as validated live data.