There has been blanket advertising on TV up here in Townsville of an emerging weed threat of Mimosa Pigra. I have realised that this weed has been gradually spreading around my "lawn" (more like a meadow, the way I maintain it) since late 1998. Presumably the seeds from these would have washed their way downstream towards the river. Asking around, this plant has been around Townsville in various patches for decades. I just wonder if we are already too late?
Mimosa flowers, normally pink - turned yellow by the highly alkaline clay soil in my front yard.
leaves before being touched
Touch-sensitive leaves now tucked away.
Note that these plants develop nasty thorns, and can grow into inpenetrable thickets metres high. They love our tropical climate, and have already laid claim to large swathes of the Northern Territory (more than NT's aboriginals :-)) In fact they should be renamed "Old man death"