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.
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.
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.