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R.A. Howard @ USDA-NRCS PLANTS Database |
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| R.A. Howard @ USDA-NRCS PLANTS Database |
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Summary
Physical Characteristics
Iris tenax is a PERENNIAL growing to 0.3 m (1ft) by 0.6 m (2ft in).
It is not frost tender. It is in flower in May. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects. The plant is self-fertile.
Suitable for: light (sandy) and medium (loamy) soils and prefers well-drained soil. Suitable pH: mildly acid and neutral soils. It can grow in semi-shade (light woodland) or no shade. It prefers dry or moist soil and can tolerate drought.
UK Hardiness Map
US Hardiness Map
Synonyms
I. gormanii.
Plant Habitats
Woodland Garden Dappled Shade;
Edible Uses
References More on Edible Uses
Medicinal Uses
Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.
Antiemetic
A tincture of the whole plant, or the bulbous stems, is given in the treatment of bilious vomiting and is recommended for treating depression[4].
References More on Medicinal Uses
Other Uses
Fibre
A fibre from the leaves is used in weaving and making ropes[1, 4]. The fibre is buoyant, strong and durable[207].
Special Uses
References More on Other Uses
Cultivation details
Requires a really well-drained lime-free soil that is dry rather than damp[79, 233]. Succeeds in dry shade according to another report which also says that, once established, it is drought tolerant[190]. Very easy to grow in a lime-free woodland soil[42]. Succeeds in full sun or partial shade[42]. A very ornamental plant[1]. Hybridizes freely, especially with other Pacific Coast Irises[129]. Iris tenax hybridizes with I. bracteata, I. chrysophylla, I. douglasiana, I. hartwegii, I. innominata, I. macrosiphon, I. purdyi, and I. tenuissima[270]. Members of this genus are rarely if ever troubled by browsing deer or rabbits[233].
References Carbon Farming Information and Carbon Sequestration Information
Temperature Converter
Type a value in the Celsius field to convert the value to Fahrenheit:
Fahrenheit:
Plant 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 in early September after flowering but it can also be done in March. 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.
Other Names
If available other names are mentioned here
Native Range
NORTHERN AMERICA: United States (Oregon, Washington, California)
Weed Potential
Right plant wrong place. We are currently updating this section.
Please note that a plant may be invasive in one area but may not
in your area so it's worth checking.
Conservation Status
IUCN Red List of Threatened Plants Status :
IUCN Red List
| Related Plants
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| Latin Name | Common Name | Habit | Height | Hardiness | Growth | Soil | Shade | Moisture | Edible | Medicinal | Other |
| Albizia lebbeck | Siris Tree, Woman's Tongue, East Indian Walnut | Tree | 15.0 |
10-11
| F | LMH | N | DM | 1 | 2 | 4 |
| Albizia lucidior | Potka siris tree | Tree | 15.0 |
10-12
| F | LMH | SN | M | 0 | 0 | 3 |
| Albizia procera | White Siris, Tall Albizia, Forest Siris | Tree | 25.0 |
10-12
| F | LMH | N | M | 1 | 2 | 4 |
| Bobartia indica | Rush Iris | Perennial | 0.6 |
7-10
| S | L | N | DM | 0 | 0 | 1 |
| Gynandriris sisyrinchium | Spanish Nut | Perennial | 0.2 |
7-10
| | MH | SN | DM | 1 | 0 | |
| Iris cristata | Crested Iris, Dwarf crested iris | Perennial | 0.2 |
5-9
| M | LM | SN | M | 1 | 1 | |
| Iris decora | | Perennial | 0.3 |
-
| | LM | N | DM | 0 | 1 | |
| Iris douglasiana | Mountain Iris, Douglas iris | Perennial | 0.3 |
6-9
| | LM | SN | DMWe | 0 | 0 | 1 |
| Iris ensata | Japanese Water Iris | Perennial | 0.6 |
5-8
| M | LM | N | MWe | 1 | 1 | 2 |
| Iris filifolia | | Bulb | 0.5 |
-
| | LM | N | DM | 1 | 0 | |
| Iris foetidissima | Stinking Gladwin, Stinking iris, Gladwin Iris | Perennial | 1.0 |
7-10
| M | LMH | FSN | DMWe | 0 | 2 | 3 |
| Iris germanica | Purple Flag, German iris, Orris-root, Tall Bearded German Iris, Bearded Iris | Perennial | 1.0 |
4-10
| M | LM | SN | DM | 1 | 3 | 2 |
| Iris germanica florentina | Orris, Orris-root | Perennial | 0.9 |
5-10
| M | LM | SN | M | 1 | 3 | 3 |
| Iris japonica | | Perennial | 0.6 |
-
| | LM | SN | DM | 1 | 2 | 3 |
| Iris kemaonensis | | Perennial | 0.5 |
-
| | LM | SN | DM | 0 | 2 | |
| Iris macrosiphon | Bowltube Iris | Perennial | 0.2 |
-
| | LM | SN | M | 0 | 1 | 1 |
| Iris missouriensis | Rocky Mountain Iris | Perennial | 0.8 |
0-0
| | LM | SN | MWe | 1 | 2 | 1 |
| Iris pallida | Dalmation Iris, Sweet iris, Fragrant Iris, Zebra Iris | Perennial | 1.0 |
4-10
| M | LM | SN | DM | 2 | 1 | 3 |
| Iris pseudacorus | Yellow Flag, Paleyellow iris | Perennial | 1.5 |
5-8
| M | LM | SN | MWeWa | 1 | 2 | 2 |
| Iris purdyi | Purdy's Iris | Perennial | 0.4 |
-
| | LM | SN | DM | 0 | 0 | 1 |
| Iris sanguinea | Blood iris | Perennial | 0.8 |
5-9
| | LM | SN | MWe | 0 | 1 | 1 |
| Iris setosa | Beachhead Iris, Canada beachhead iris, Wild flag | Perennial | 0.6 |
4-8
| M | LM | SN | MWe | 1 | 1 | 1 |
| Iris sibirica | Siberian Iris | Perennial | 0.6 |
4-9
| F | LM | SN | MWe | 1 | 1 | 1 |
| Iris tectorum | Roof Iris, Wall iris, Japanese Roof, White Root Iris | Perennial | 0.3 |
5-9
| M | LM | SN | DM | 1 | 0 | |
| Iris versicolor | Blue Flag, Harlequin blueflag | Perennial | 0.6 |
4-8
| | LM | SN | MWe | 0 | 3 | 2 |
| Solanum tuberosum | Potato, Irish potato | Perennial | 1.0 |
7-10
| | LMH | N | M | 5 | 2 | 3 |
| Tagetes filifolia | Irish Lace | Annual | 0.4 |
8-11
| F | LMH | N | DM | 1 | 0 | 2 |
|
Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.
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Expert comment
Author
Douglas.
Botanical References
60200270
Links / References
For a list of references used on this page please go here
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