When do i know they have flowered
19 September 2014 07:51 AM
I am sorry to say once the bindii has flowered and produced prickles, the weed will re-seed the following year. Two sprays are required, one now and another next year, during autumn/winter. Apply Yates Buffalo Pro Selective Bindii and Broadleaf Weed Killer to kill this weed off early before it has a chance to establish.
From your friends at Yates Gardening