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Kerria japonica
  • Bachelor's Button

a perennial woody deciduous member of the Kerria genus in the family Rosaceae.

248px
Niche
  • Unknown
    Unknown
    The ecosystem niches for this plant are unknown. Do you know them? Click the edit button to add them!
Functions
  • None
    None
    There are no functions defined for this plant. Do you know of some? Click the edit button to add them!
Light
  • Full sun
    Full sun
    The amount of sun exposure that a plant prefers in ideal conditions.
    Key
  • light shade
    Light shade
    The amount of shade a plant will tolerate without adverse health affects.
    Key
Water
  • Water Requirementsmoderate
    Moderate
    The amount of water a plant needs for healthy growth, relative to other plants.
    Key
Soil
  • acid,neutral,alkaline
    Acid to Alkaline
    The PH range (acidity or alkilinity) of the growth medium ideal for healthy nutrient absorbtion.
    Key
  • Sandy to Heavy clay
    The soil texture this plant prefers for optimal growth.
    Key
Cold & Heat
  • 4
    Zone 4
    The USDA Hardiness scale assigns plants a number from 1 to 12 representing the minimum temperature a plant can survive.
    Key
    0< -53.9ºC< -65ºF
    1-51.1ºC-60ºF
    2-45.6ºC-50F
    3-40ºC-40ºF
    4-34.4ºC-30ºF
    5-28.9ºC-20ºF
    6-23.3ºC-10ºF
    7-17.8ºC0ºF
    8-12.2C10ºF
    9-6.7ºC20ºF
    10-1.1ºC30ºF
    114.4ºC40ºF
    12> 10ºC> 5ºF
  • ?
    Unknown
    The AHS Heat scale assigns plants a number from 1 to 12 representing the number of days per year a plant requires a temperature exceeding 30ºC (86ºF).
    Key
    11
    21 - 7
    38 - 14
    415 - 30
    531 - 45
    646 - 60
    761 - 90
    891 - 120
    9121 - 150
    10151 - 180
    11181 - 210
    12181 - 210
Kerria japonica has 0 edible uses listed
Kerria japonica has 0 medicinal uses listed

Uses

Toxic parts

The leaves contain small quantities of hydrogen cyanide (prussic acid). In small quantities, hydrogen cyanide has been shown to stimulate respiration and improve digestion, it is also claimed to be of benefit in the treatment of cancer. In excess, however, it can cause respiratory failure and even death.

Edible uses

Notes

Young leaves - cooked[1][2]. The leaves contain a small amount (0.002%) of hydrogen cyanide and are also a rich source of vitamin C (200mg per 100g)[3]. Some caution is advised, see the notes above on toxicity. Fruit[2]. No more details are given, but this report is somewhat suspect, the plant does not produce a fleshy fruit and the seed case certainly does not look edible[K]. The fruit is a dry, somewhat plump achene about 5mm in diameter[4].

Fruit

Unknown use

Leaves

Unknown use

Material uses

There are no material uses listed for Kerria japonica.

Medicinal uses(Warning!)

A decoction of the flowering shoots is used in the treatment of coughs and women's complaints[5][3].

Unknown part

Women's complaints

Ecology

Ecosystem niche/layer

Ecological Functions

Nothing listed.

Forage

Nothing listed.

Shelter

Nothing listed.

Propagation

Seed - we have no details on this species but suggest sowing the seed as soon as it is ripe in a cold frame. Sow stored seed as soon as possible in a cold frame, it is likely to require a period of cold stratification. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the cold frame for their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts.

Division of suckers, removed with care from established plants during the dormant season[4]. Larger clumps can be replanted direct into their permanent positions, though it is best to pot up smaller clumps and grow them on in a cold frame until they are rooting well. Plant them out in the spring. Cuttings of young shoots. Young basal shoots in early summer work quite well. Harvest the shoots when they are about 10 - 15cm long with plenty of underground stem. Pot them up into individual pots and keep them in light shade in a cold frame or greenhouse until they are rooting well. Plant them out in the summer.

Layering.

Practical Plants is currently lacking information on propagation instructions of Kerria japonica. Help us fill in the blanks! Edit this page to add your knowledge.



Cultivation

Succeeds in most aspects in any good loamy soil[6]. Succeeds in very poor soils[7]. Grows well in heavy clay soils. Prefers a moist well-drained soil in a sunny position with shade from the midday sun[4].

Hardy to about -20°c[8]. Plants are moderately fast growing[7]. They sucker freely and can be invasive[7]. Some named forms have been developed for their ornamental value[9]. This species is notably resistant to honey fungus[4].

The flowers are said to be usually unisexual but we do not know if the plants are dioecious or monoecious.

Crops

Problems, pests & diseases

Associations & Interactions

There are no interactions listed for Kerria japonica. Do you know of an interaction that should be listed here? edit this page to add it.

Polycultures & Guilds

There are no polycultures listed which include Kerria japonica.

Descendants

Cultivars

Varieties

None listed.

Subspecies

None listed.

Full Data

This table shows all the data stored for this plant.

Taxonomy
Binomial name
Kerria japonica
Genus
Kerria
Family
Rosaceae
Imported References
Edible uses
[1][2][3][4]
Medicinal uses
[5][3]
Material uses & Functions
Botanic
[10][4][11]
Propagation
Cultivation
Environment
Cultivation
Uses
Edible uses
None listed.
Material uses
None listed.
Medicinal uses
None listed.
Functions & Nature
Functions
Provides forage for
Provides shelter for
Environment
Hardiness Zone
4
Heat Zone
?
Water
moderate
Sun
full sun
Shade
light shade
Soil PH
acid, neutral, alkaline
Soil Texture
sandy, loamy, clay, heavy clay
Soil Water Retention
well drained
Environmental Tolerances
    Ecosystems
    Native Climate Zones
    None listed.
    Adapted Climate Zones
    None listed.
    Native Geographical Range
    None listed.
    Native Environment
    None listed.
    Ecosystem Niche
    None listed.
    Root Zone Tendancy
    None listed.
    Life
    Deciduous or Evergreen
    deciduous
    Herbaceous or Woody
    woody
    Life Cycle
    perennial
    Growth Rate
    moderate
    Mature Size
    2 x 2 meters
    Fertility
    ?
    Pollinators
    Insects
    Flower Colour
    ?
    Flower Type
    monoecious

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    "image:Kerria japonica1.jpg|248px" cannot be used as a page name in this wiki. "image:Kerria japonica1.jpg|248px" cannot be used as a page name in this wiki.


    "image:Kerria japonica1.jpg|248px" cannot be used as a page name in this wiki.

    "image:Kerria japonica1.jpg|248px" cannot be used as a page name in this wiki.

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    References

    1. ? 1.01.1 Tanaka. T. Tanaka's Cyclopaedia of Edible Plants of the World. Keigaku Publishing (1976-00-00)
    2. ? 2.02.12.2 Kunkel. G. Plants for Human Consumption. Koeltz Scientific Books ISBN 3874292169 (1984-00-00)
    3. ? 3.03.13.23.3 Duke. J. A. and Ayensu. E. S. Medicinal Plants of China Reference Publications, Inc. ISBN 0-917256-20-4 (1985-00-00)
    4. ? 4.04.14.24.34.44.5 Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press ISBN 0-333-47494-5 (1992-00-00)
    5. ? 5.05.1 Stuart. Rev. G. A. Chinese Materia Medica. Taipei. Southern Materials Centre ()
    6. ? F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press (1951-00-00)
    7. ? 7.07.17.2 Davis. B. Climbers and Wall Shrubs. Viking. ISBN 0-670-82929-3 (1990-00-00)
    8. ? Phillips. R. & Rix. M. Shrubs. Pan Books ISBN 0-330-30258-2 (1989-00-00)
    9. ? Thomas. G. S. Ornamental Shrubs, Climbers and Bamboos. Murray ISBN 0-7195-5043-2 (1992-00-00)
    10. ? Cite error: Invalid <ref> tag; no text was provided for refs named PFAFimport-11
    11. ? [Flora of China] (1994-00-00)

    "image:Kerria japonica1.jpg|248px" cannot be used as a page name in this wiki.

    Retrieved from "https://practicalplants.org/w/index.php?title=Kerria_japonica&oldid=78040"
    Facts about "Kerria japonica"RDF feed
    Article is incompleteYes +
    Article requires citationsNo +
    Article requires cleanupYes +
    Belongs to familyRosaceae +
    Belongs to genusKerria +
    Has common nameBachelor's Button +
    Has drought toleranceIntolerant +
    Has edible partFruit + and Leaves +
    Has edible useUnknown use +
    Has fertility typeInsects +
    Has flowers of typeMonoecious +
    Has growth rateModerate +
    Has hardiness zone4 +
    Has imageKerria japonica1.jpg +
    Has lifecycle typePerennial +
    Has mature height2 +
    Has mature width2 +
    Has medicinal partUnknown part +
    Has medicinal useWomen's complaints +
    Has primary imageKerria japonica1.jpg +
    Has search namekerria japonica + and x +
    Has shade toleranceLight shade +
    Has soil ph preferenceAcid +, Neutral + and Alkaline +
    Has soil teclayture preferenceClay +
    Has soil teheavy clayture preferenceHeavy clay +
    Has soil teloamyture preferenceLoamy +
    Has soil tesandyture preferenceSandy +
    Has soil water retention preferenceWell drained +
    Has sun preferenceFull sun +
    Has taxonomy nameKerria japonica +
    Has water requirementsmoderate +
    Is deciduous or evergreenDeciduous +
    Is herbaceous or woodyWoody +
    Is taxonomy typeSpecies +
    Tolerates nutritionally poor soilNo +
    Uses mature size measurement unitMeters +