these weeds also have yellow flowers and a lot of roots.
17 November 2011 12:05 PM
Double gee (Emex australis)is an awful weed with a very spiky seed. Doublegee, spiny emex, three corner jack (Emex australis) is a pest in Western Australia (WA).
Doublegee can infest crops and pastures. Its woody fruits can damage the feet of livestock, particularly lambs, and dogs. Doublegee plants can be toxic to livestock.
We do not have a herbicide which will control this weed in a lawn. The DPI in WA may offer some suggestions as will the APVMA website, use "doublegee" as the pest name.