Rock Mulch and Stone Ground Cover in Bulk

Rock mulch versus bark

Bark breaks down, needs replacing every one to three years and floats off in heavy rain. Stone stays put, does not feed weeds as it decomposes, and does not attract termites near a building line. The upfront cost is higher; the total cost over five years is usually lower, which is the argument that wins commercial specifications.

Colour choice and heat

Darker stone absorbs more heat and radiates it into the root zone, which matters in hot climates. Lighter tones — buff, white and pale grey — keep beds noticeably cooler and are the standard specification in Gulf and desert-region planting. In temperate climates the difference is largely aesthetic.

Depth, membrane and weed control

Rock mulch suppresses weeds by blocking light, so depth is what does the work: 50 mm minimum, 75 mm where the bed gets full sun. A permeable membrane underneath stops stone sinking into soil and prevents weeds rooting up through it, while still letting irrigation through.

Sizing for the location

10–20 mm reads as a fine, tidy mulch and stays in place on flat beds. 20–40 mm is the general workhorse. 40 mm and above is used on slopes and in windy or high-traffic locations where smaller stone would migrate.

Ordering by area

At 50 mm depth allow around 75–80 kg per square metre; at 75 mm allow 110–120 kg. Give us the total area and preferred depth and we will convert it to tonnes and tell you how many containers that is.

Wholesale, bulk and export details

This product is supplied on the same commercial basis as the rest of our range: quantity confirmed against container payload, packing quoted separately and documentation prepared to your broker's brief.

Questions buyers ask about rock mulch

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Where we ship rock mulch

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