Royal National Park Roadside Mulching by admin | Jun 28, 2017 | Bark Blower Projects, Commercial Landscaping, Material, Mulches, Roadways | Royal National Park Roadside Mulching Roadside Mulching Five trucks were on site to complete 600m³ mulching job in 2 days. The Hills Forest Mulch was used. If you look closely these photos show 4 out of the 5 trucks lined up along the road to carry out the job as efficiently as possible.