07/2555 - Operational Works - Drainage Stormwater Vegetation [As Published] · 142007.2555

Attunga Heights Rehabilitation Specification 18

opportunity to assess the presence or absence of a canopy, the structural elements missing from a
regenerating community and whether ecotonal boundaries should be considered.

7.3 PLANTING TECHNIQUE

7.3.1 Site Preparation

Prior to planting, an area must have been sprayed (where required) to control all weed species
and competing vegetation. Such spraying and weed control efforts must have killed or removed
all weed species (and competition) from the site, and the site should be in a suitable condition for
planting to proceed.

7.3.2 Planting

Planting stock is to be randomly arranged at the spacings so as to achieve a plant density similar
to the natural system. Generally this will require plantings at 1.5m centres, however it is
anticipated that denser plantings up to 5 plants per square meter will be required in the Intensive
rehabilitation Zone. The hole to be dug at least twice the size of the pot. Planting stock should be
moist and not dry at the time of planting. Soaking of the rootball immediately prior to planting is
an appropriate approach. The figure below illustrates the preferred technique for tubestock and
Supertubes.

 

Tubestock Planting
Plant tube in a slight shallow, ensuring rootball is just below soil surface.

100mm of mulch to surround plant, but not touch the stem.

Fertiliser tablet to be placed adjacent to the rootball.

 

 

 

 

 

7.3.3 Mulch

Site generated mulch from chipping of felled trees and lopped branches will be utilised around
plantings. This site generated mulch exclude material (particularly seeds) from any
environmental weed species. Approximately 1m? of mulch at a depth of approximately 100mm
should surround each planted specimen. Where areas are to be blanket mulched, mulch is to be
applied to a depth of 100mm.

7.3.4 Fertiliser

Each tree will be fertilised with a 10gm fertiliser tablet (Agriform or a similar product) place
adjacent to, but not touching, the rootball. Species of Banksia and Persoonia are not to be
fertilised.

 

Chenoweth EPLA 078103_Rehab_12_12_07.doc Dec ‘07