Stinking Iris

Family:
Iridaceae
Origin:
Europe, North Africa.

General description

Tufted perennial iris <80cm high. Dark green, sword-shaped, leathery leaves, foul smell when crushed. Dull yellow flowers (Nov-Dec), have veins. Green, 3-sided seed capsules.

Disturbed forest & margins, bare ground, gullies. Widespread, tolerates wide of habitat range.

Seeds spread by birds, pods splitting.

Poisonous to stock, humans. Forms dense clumps excluding other vegetation.

Site management

Exclude livestock at all times. Don’t replant sprayed sites for 6 months. Remove ripe seeds. Replant with taller understory spp. in forest sites, to minimise seedlings. Very difficult to eradicate.

Recommended approaches

1. Weedmat for 3-4 months.
2. Cut & paint stump (5g metsulfuron/1L or 30ml glyphosate + 20ml penetrant/1L).
3. Spray spring - autumn (100ml glyphosate + 20ml penetrant/10L).

Caution: when using any herbicide or pesticide PLEASE READ THE LABEL THOROUGHLY to ensure that all instructions and safety requirements are followed.

Similar species

yellow flag
Iris pseudacorus

Yellow flag is aquatic with tall stems and yellow flowers

RPMS status

Not a legally declared pest plant
stinking iris - Main species image