The best mulch can be had for free, if you are willing to drive to Snells Beach (near Warkworth, north of Auckland). After easterly storms, the beach there is covered in seagrass, which is fine like confetti. I have never seen such amazing results in my life. I pile it right up against my plants, and they love it. They love the sand and salt and bits of shell that come with it. The seagrass is fantastic for holding moisture and slowly releasing it into the soil. It's a bit of a mission to get, but so worth it. Maybe I should start stockpiling it here after storms and offering it up to Ooooby gardeners!
Hi, A really cheap and in my experience effective mulch is grass clippings from your lawn. I put a thin layer of these all around vegies and flowers and trees. The main thing is to make sure the clippings aren't touching the stems of the plants you wish to grow, and that they are in a thin layer. I find they suppress weeds and retain moisture really well. Good luck! Ingrid
I collect coffee grinds from our local cafe, they smell and look great and are ever so easy to dig in. No cost either!
The bags are really useful as tree guards and folded up with drainage holes snipped in the bottom find another life as planter bags. They also came in handy to keep hubby's cast on his foot dry when he takes a shower:)
I use old grass clippings ... there usually put into a pile and left for a couple of weeks till all the heat has gone from it and then I mulch with it around my plants .... Ive done this for the last 5-6 years and its been great