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Iris douglasiana

a perennial evergreen member of the Iris genus in the family Iridaceae.

248px
Niche
  • Soil surface
    Soil surface
    There are no details available for this niche.
Functions
  • Ground cover
    Ground cover
    There are no details available for this function.
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 Requirementshigh
    High
    The amount of water a plant needs for healthy growth, relative to other plants.
    Key
Soil
  • acid,neutral,alkaline
    Unknown
    The PH range (acidity or alkilinity) of the growth medium ideal for healthy nutrient absorbtion.
    Key
  • Sandy to Loamy
    The soil texture this plant prefers for optimal growth.
    Key
Cold & Heat
  • 7
    Zone 7
    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
Iris douglasiana has 0 material uses listed

Uses

Toxic parts

Many plants in this genus are thought to be poisonous if ingested, so caution is advised[1]. The roots are especially likely to be toxic[2]. Plants can cause skin irritations and allergies in some people[2].

Edible uses

There are no edible uses listed for Iris douglasiana.

Material uses

A fibre is obtained from the leaves. Traditionally the N. American Indians would take just the one outside fibre from each side of a leaf. This must have necessitated using a huge number of leaves. It makes a beautifully strong and pliable cord or rope[3][4]. It would take a person almost 6 weeks to make a rope 3.5 metres long[4]. The fibre can also be used for making paper[5] The leaves are harvested in summer after the plant has flowered, they are scraped to remove the outer skin and are then soaked in water for 2 hours prior to cooking. The fibres are cooked for 24 hours with lye and then beaten in a ball mill for 3 hours. They make a light tan paper[5]. Plants can be grown for ground cover when spaced about 60cm apart each way[6].

Unknown part

Fibre
Paper

Medicinal uses(Warning!)

There are no medicinal uses listed for Iris douglasiana.

Ecology

Ecosystem niche/layer

Soil surface

Ecological Functions

Ground cover

Forage

Nothing listed.

Shelter

Nothing listed.

Propagation

Seed - best sown as soon as it is ripe in a cold frame. Stored seed should be sown as early in the year as possible in a cold frame. Prick out the seedlings into individual pots when they are large enough to handle and grow them on in the greenhouse or cold frame for their first year. Plant out into their permanent positions in late spring or early summer. Division, best done after flowering in late summer[7]. Very easy, 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.

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



Cultivation

We have found this species to be exceedingly easy to grow in sun or shade in our medium loamy soil that is slightly acid. It does well in very wet as well as very dry years. It has withstood considerable neglect, forming a very dense clump that seems capable of standing up to grass and other vigorous plants[K]. The following notes, however, suggest a wide difference of opinions over the best conditions for this plant[K]. Requires a rich well-drained lime-free soil[7][8][9]. Another report says that it succeeds in sun or shade in acid or slightly alkaline soils[10]. Requires a moist soil, growing well by water[11]. This species requires a really well-drained soil, dry rather than damp[12]. It succeeds in dry shade according to another report which also says that it is drought tolerant once established[13]. Easily grown in semi-shade in a woodland soil[7]. Tolerates salt spray[10].

Plants are hardy to about -15°c[14]. A very ornamental plant[11], it hybridizes readily, especially with other Pacific coast Irises[10]. Members of this genus are rarely if ever troubled by browsing deer or rabbits[12].

Resents root disturbance, any moving of the plant is best done in early September[10].

Crops

Problems, pests & diseases

Associations & Interactions

There are no interactions listed for Iris douglasiana. 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 Iris douglasiana.

Descendants

Cultivars

Varieties

None listed.

Subspecies

None listed.

Full Data

This table shows all the data stored for this plant.

Taxonomy
Binomial name
Iris douglasiana
Genus
Iris
Family
Iridaceae
Imported References
Edible uses
Medicinal uses
Material uses & Functions
[3][4][5][6]
Botanic
[8][15]
Propagation
Cultivation
Environment
Cultivation
Uses
Edible uses
None listed.
Material uses
None listed.
Medicinal uses
None listed.
Functions & Nature
Functions
Ground cover
Provides forage for
Provides shelter for
Environment
Hardiness Zone
7
Heat Zone
?
Water
high
Sun
full sun
Shade
light shade
Soil PH
acid, neutral, alkaline
Soil Texture
sandy, loamy
Soil Water Retention
Environmental Tolerances
  • Drought
  • Strong wind
  • Maritime exposure
Ecosystems
Native Climate Zones
None listed.
Adapted Climate Zones
None listed.
Native Geographical Range
None listed.
Native Environment
None listed.
Ecosystem Niche
Soil surface
Root Zone Tendancy
None listed.
Life
Deciduous or Evergreen
evergreen
Herbaceous or Woody
?
Life Cycle
perennial
Growth Rate
?
Mature Size
0.3 x 0.6 meters
Fertility
self fertile
Pollinators
Insects
Flower Colour
?
Flower Type
hermaphrodite

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



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

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

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






References

  1. ? Frohne. D. and Pf?nder. J. A Colour Atlas of Poisonous Plants. Wolfe ISBN 0723408394 (1984-00-00)
  2. ? 2.02.1 Bown. D. Encyclopaedia of Herbs and their Uses. Dorling Kindersley, London. ISBN 0-7513-020-31 (1995-00-00)
  3. ? 3.03.1 Balls. E. K. Early Uses of Californian Plants. University of California Press ISBN 0-520-00072-2 (1975-00-00)
  4. ? 4.04.14.2 Coffey. T. The History and Folklore of North American Wild Flowers. Facts on File. ISBN 0-8160-2624-6 (1993-00-00)
  5. ? 5.05.15.2 Bell. L. A. Plant Fibres for Papermaking. Liliaceae Press (1988-00-00)
  6. ? 6.06.1 Thomas. G. S. Plants for Ground Cover J. M. Dent & Sons ISBN 0-460-12609-1 (1990-00-00)
  7. ? 7.07.17.2 Grey. C. H. Hardy Bulbs. Williams & Norgate. (1938-00-00)
  8. ? 8.08.1 Munz. A California Flora. University of California Press (1959-00-00)
  9. ? Innes. C. The World of Iridaceae ()
  10. ? 10.010.110.210.3 ? Alpine Garden Society Bulletin. Volume 56. Alpine Garden Society ()
  11. ? 11.011.1 F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press (1951-00-00)
  12. ? 12.012.1 Thomas. G. S. Perennial Garden Plants J. M. Dent & Sons, London. ISBN 0 460 86048 8 (1990-00-00)
  13. ? Chatto. B. The Dry Garden. Dent ISBN 0460045512 (1982-00-00)
  14. ? Phillips. R. & Rix. M. Perennials Volumes 1 and 2. Pan Books ISBN 0-330-30936-9 (1991-00-00)
  15. ? Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press ISBN 0-333-47494-5 (1992-00-00)

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

Retrieved from "https://practicalplants.org/w/index.php?title=Iris_douglasiana&oldid=77932"
Facts about "Iris douglasiana"RDF feed
Article is incompleteYes +
Article requires citationsNo +
Article requires cleanupYes +
Belongs to familyIridaceae +
Belongs to genusIris +
Functions asGround cover +
Has binomial nameIris douglasiana +
Has drought toleranceTolerant +
Has environmental toleranceMaritime exposure +, High wind + and Drought +
Has fertility typeSelf fertile + and Insects +
Has flowers of typeHermaphrodite +
Has hardiness zone7 +
Has imageDouglasIris.jpg +
Has lifecycle typePerennial +
Has material partUnknown part +
Has material useFibre + and Paper +
Has mature height0.3 +
Has mature width0.6 +
Has primary imageDouglasIris.jpg +
Has search nameiris douglasiana +
Has shade toleranceLight shade +
Has soil ph preferenceAcid +, Neutral + and Alkaline +
Has soil texture preferenceSandy + and Loamy +
Has sun preferenceFull sun +
Has taxonomic rankSpecies +
Has taxonomy nameIris douglasiana +
Has water requirementshigh +
Inhabits ecosystem nicheSoil surface +
Is deciduous or evergreenEvergreen +
Is taxonomy typeSpecies +
PFAF cultivation notes migratedNo +
PFAF edible use notes migratedYes +
PFAF material use notes migratedNo +
PFAF medicinal use notes migratedYes +
PFAF propagation notes migratedNo +
PFAF toxicity notes migratedNo +
Tolerates maritime exposureYes +
Tolerates nutritionally poor soilNo +
Tolerates windYes +
Uses mature size measurement unitMeters +
Has subobjectThis property is a special property in this wiki.Iris douglasiana + and Iris douglasiana +