How to stop weeds growth through mulch?

[John57]

We laid mulch two years ago in our garden here in Mernda Vic. Now we are having an overflow of weeds - grass, clover and so forth. In one large area, we’ve managed weeds by pulling them out. But despite this the other areas are growing weeds because of the rain. How to prevent new growth like this? 

 

 

 

[John57]

Funny I’m also using vinegar to control mildew…