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Yellow Flower Iris

Iris wilsonii

Also called Yellow Flowered Iris

Yellow Flower Iris
Photo: Fan Wen, CC BY-SA 4.0

Iris wilsonii is a rhizomatous perennial from China with grass-like grey-green leaves and fragrant yellow flowers in early summer. It grows best in moist soil in full sun or light shade, and it needs protection from heat and drying out.

Family
Iridaceae (Iris family)
Grows as
Perennial
Light
Full sun, Part shade
Water
Keep soil moist, especially in autumn, but avoid constant waterlogging of the rhizomes.
Soil
Humus or peat-enriched, slightly acidic to neutral (pH 5.5 to 7), moisture tolerant.
Temperature
Tolerates down to about -15 °C; may survive lower if mulched or protected in winter. Dislikes very hot conditions.
How easy
Moderate
Safety
Toxic: Rhizome and leaves are poisonous if swallowed, causing stomach pain and vomiting; handling may cause skin irritation or allergy.
Native range
C. China
Climate
subtropical

About

Iris wilsonii is a species of flowering plant in the family Iridaceae, native to China. It is placed in the series Sibiricae of the subgenus Limniris of the genus Iris. This rhizomatous herbaceous perennial has long and drooping grey-green leaves, hollow stems and two fragrant yellow, pale yellow or yellow/white flowers.

How to grow it

The 'Sino-siberian' irises all generally have similar cultivation requirements.

They are not as hardy as the other group of Siberian irises. They also don't like very hot conditions either. If it losses too much moisture it will wither and die.

Safety

Like many other irises, most parts of the plant are poisonous (rhizome and leaves), if mistakenly ingested can cause stomach pains and vomiting. Also handling the plant may cause a skin irritation or an allergic reaction.

Other Iris plants

Iris acutiloba subsp. lineolata · Iris acutiloba · Iris adriatica · Iris afghanica · Iris alberti · Iris albomarginata · Iris alexeenkoi · Single Bract Iris · Iris antilibanotica · Stool iris · Iris arenaria · Iris assadiana

Text excerpted from the Wikipedia article Iris wilsonii by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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