Guides · 13 September 2026 · Planted
What planting to an engineering specification really means on civil sites: species, densities, methods and inspection against the drawings, and how Planted delivers.
On a civil or infrastructure project, planting is not a landscaping afterthought. It is a specified deliverable with defined species, densities, installation methods and hold points, and it is inspected against the drawings like any other work package. Getting it right means reading the specification the way an engineer does and installing to match.
What “planting to spec” actually covers
When a head contractor or authority issues a landscape and revegetation specification, it usually sits alongside the civil drawings and the erosion and sediment control documentation. Between those documents you are given the rules that govern the planting package. In practice, that means four things you have to get right on the ground.
Species and provenance
The specification and planting schedule set out which species go where, and often the provenance or seed source required for native works. Substituting a species because it is easier to source is not an option on a compliant site. Where a listed species is genuinely unavailable, that is a conversation to have with the superintendent or project manager before planting, not a decision to make quietly on site.
Species selection is rarely arbitrary. It reflects the zone the plant sits in, the slope, the exposure, whether the area is a batter, a basin, a swale or a riparian edge, and what the plant is expected to do once established.
Densities and layout
The schedule will give planting densities, usually as plants per square metre or set spacings, and sometimes as a mix ratio across a treatment area. Densities matter because they drive canopy closure, ground cover and the erosion performance the design relies on. Under-planting a batter to save on tubestock undermines the stabilisation the engineer specified.
Layout also matters. Random or naturalistic spacing is common on revegetation and offset works, while formal spacing may apply to structured areas. The drawings tell you which applies where.
Methods
Method covers how the work is installed, not just what goes in the ground. That includes soil preparation, weed control before planting, hole size, backfill, watering-in, mulching, staking and guarding where required. On erosion-control works it extends to how jute matting, coir logs and batter treatments are pinned and lapped, all installed to the manufacturer specification. As a preferred installer for leading erosion-control suppliers, we install these products the way the manufacturer and the design intend.
Sequencing is part of method too. Matting often goes down before planting through it, and planting may need to follow earthworks sign-off and topsoil placement. Turning up out of sequence causes rework.
Establishment and maintenance
Most specifications carry a maintenance and establishment period with defined watering, weeding, replacement and reporting obligations. Plant survival rates at the end of that period are frequently a completion criterion. The planting is not finished at installation, it is finished when it meets the survival and cover targets in the document.
How the work is inspected
Civil planting is checked against the drawings and specification, not against appearances. Expect inspections that verify species against the schedule, count or sample densities, confirm matting and erosion treatments are installed correctly, and record survival rates through the establishment period. Hold points and witness points may apply, meaning work cannot proceed or be covered until it is signed off.
Good records make these inspections straightforward. Photographic records, delivery dockets for plant stock and materials, and clear as-built information all help demonstrate compliance and close out the package without argument.
How Planted works to the drawings
We treat the planting package as civil work. That starts with reading the landscape specification, the civil drawings and the erosion and sediment control documents together, so the crew installs to what the design requires rather than to a generic method.
On site we work to program alongside the head contractor, sequence with earthworks and erosion control, and keep one crew across every stage of the job. That continuity means the team that lays the matting is the team that plants through it and the team that returns for establishment, so nothing is lost between stages.
With two decades across all kinds of terrain, from detention basins and batters to riparian corridors and large staged subdivisions, we plant to the densities, species and methods the specification sets, and we keep the records that let you close out the works.
Talk to us early
The best outcomes come from involving the planting contractor while the program and sequencing are still being set, not after the batters are cut. If you have a civil or infrastructure project with a planting or revegetation package, talk to Planted about installing it to spec. Call 1800 WE PLANT (1800 937 526) or email projects@planted.com.au.
