Tropical Plus Mulch

No. It is a composted mulch and the dark colour is what the material is, rather than an injected colourant. If you want a dark bed without putting a colourant on it, this is how to get one.

The pieces are smaller, so the mulch settles into a denser layer at the same depth and sits closer around small plants. It suits a planted ornamental bed better than a coarse chip does, and a tree surround less well.

Usually not the best choice. It holds moisture at the surface and most WA natives would rather dry out between waterings. A coarse bark mulch suits them far better — ask at the counter and we will point you at it.

Both give a dark bed. Tropical Plus is composted, so it feeds the top of the soil while it covers it, and it softens over time. Premium Black is colour injected and holds its colour for years, but it is a finish rather than something working on the soil.

No, and neither is any other mulch. The Waterwise programs are Water Corporation endorsements for businesses, specialists, garden irrigators and councils — they accredit people and organisations in efficient water use, not products. The description this product arrived with used the phrase loosely, so we have taken it off. What is true is that a fine composted grade holds moisture at the surface better than a coarse chip does.

Fifty to seventy-five millimetres, evenly, kept clear of the stems. Because it is fine, that depth gives you a denser layer than the same depth of a chip would.

Length by width by depth in metres gives you cubic metres, and the calculator on this page does the arithmetic. Bring the figure down and we will tell you what format suits.

Yes, across Perth's southern suburbs, seven days. Tell us the address, how much you need and anything awkward about access. Confirm the current delivery cost when you order.