There are many other useful weeds. Some with long taps roots (I think the dreaded Patterson's Curse may be one of these) that germinate in poor soil and draw nutrients up from deep down in the ground.
Now I'm not very knowledgeable in the specific characteristics of different weeds so I would suggest you buy a book or google to educate yourself. Or........... you could do what I do. I haven't done much research in this area, due to other things on the go, so I just maintain a healthy respect for all plants. I assume that, in general, they have a good reason to be where they are.
I believe our property has proved this theory to me over the years. When we moved here, about nine years ago, we inherited the property from some goat owners. The goats weren't fenced off but roamed the entire property. As a result we had a few eucalyptus trees, a few black wattle, lots of tea tree and lots of Cassinia, but no new growth. I believe Cassinia is also known as China Bush or Chinaman's Bush because in the gold rush days this bush would take over after people had been digging for gold.
Cassinia is a pioneer plant - in other words it is one of the first to colonise an area that has been damaged in some way. At one point Cassinia was able to be treated as a weed although it is a native. It is very invasive. We spent the first couple of years trying to get rid of it because it was so prolific and is incredibly flammable!
We didn't get very far with our goal, which is a good thing because then I did my permaculture design course and realised it was serving a very good purpose. It holds our poor old hill together in the absence of trees and stops it blowing away!!!
In the last three years or so we have noticed a new wattle in the mix. I'm don't know what type it is. It is increasing rapidly across our property. We're not sure about the tea tree. Does it serve a purpose? It's very thick and I can only assume nature put it there for a reason. We're hoping to see new eucalypts growing soon. We've seen a handful but would love to see the property regenerate naturally back to it's original state. I'm loving just allowing nature a chance to do what she needs to do.
|The new wattle|