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Cryptotaenia japonica

East Asian Wildparsley · Japanese Cryptotaenia · Japanese Honewort

Family ApiaceaeGenus Cryptotaenia

A terracotta pot of bright green three-parted leaves with toothed edges, wet with rain
The whole plantNo machine-readable author provided. Mbc assumed (based on copyright claims).CC BY-SA 3.0

About the plant

What it is and where it grows — not part of any germination protocol.

The plant

Habit
Herbaceous Perennial, Perennial, VegetableExtension Gardener Plant Toolbox
Habit
perennialPlants of the World Online
Flower
Pink, Purple/Lavender, WhiteExtension Gardener Plant Toolbox
Blooms
SummerExtension Gardener Plant Toolbox
Native range
China North-Central, China South-Central, China Southeast, Japan, Korea, Kuril Is. and elsewhereGBIF Backbone Taxonomy
Hardiness zones
4-8Extension Gardener Plant Toolbox

Growing conditions

Sun
Dappled Sunlight; Deep shade; Partial ShadeExtension Gardener Plant Toolbox
Soil
Clay, Loam (Silt), SandExtension Gardener Plant Toolbox
Soil pH
Acid (<6.0), Alkaline (>8.0), Neutral (6.0-8.0)Extension Gardener Plant Toolbox
Moisture
MoistExtension Gardener Plant Toolbox

Toxicity is noted only where a source states it. No note here is not a finding of safety.

Sources: Extension Gardener Plant Toolbox — NC State Extension; Plants of the World Online — Royal Botanic Gardens, Kew; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

Worth knowing

Protocol

DerivedN. C. Deno, 1998

Difficulty High Rated by us, not by the source.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C Light: dark

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  4. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C Light: dark

  5. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  6. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C Light: dark

about 18 months from start to step 6. Germination happens during step 6, in 4 days.

60% germination in 4 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Cryptotaenia p. 27Public domain
Show the original text
Cryptotaenia (Apiaceae). C. japonica atropurpurea seeds DS 6 m germ. 70D-40-70D-40-70D(3/5 on 4th d).
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Cryptotaenia p. 27. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

How each step is done, in Deno’s words, and what Verified and Derived mean.

Germination trials

Readers’ own records of sowing this species, published after review. Share your trial · All trials

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