practical grassed areas
The type and
location of turf areas should be selected in the same manner as all other
plantings. We suggest that your grassed
area be minimised and planned as a major element in the landscape rather than
just a fill in. If you want lawn, plant
a patch where it will be used and not in places like median strips, shaded or
sloping sites. Turf areas should be irrigated
seperately if they are not native as many varieties have additional watering
requirements
Though watered lawns
take moderately high foot traffic and can look cool and lush, they also require
a lot of resources (labour, fuel for mowing and fertiliser) and have fairly
high water use and maintenance requirements.
Consider that around 50% of household water is used outside on the
garden and up to 80% of that goes on lawns.
Drought tolerant varieties of turf such as Legend and Sir Walter or
native lawns using Microlaena or
Bothriochloa for example, or creating a native grassland using a variety of
species are the best option for grassed areas
There are three
options for grassed areas:
- Direct
seeding of native grass or planting seedlings.
A native lawn is a little more difficult and expensive to establish, but
is durable, requires less water and if left unmowed is still attractive
- Direct
seeding of exotic grass. Exotic grasses
do not cope well in dry conditions and many such as couch are invasive. High
maintenance
- Laying
turf. Turf has an instant effect, is
cheaper but requires more water. Same
principles for exotic grasses apply
Remember that longer
grass slows water evaporation, keeps roots cool and reduces the need for
fertilisers. Only mow around one third
of the top off the grass – ‘mow long’.
Irrigation systems used to water lawn need to be below ground drippers
to deliver water to the roots without water loss through evaporation. Watering should not be shallow (just below
soil surface) as roots will be vulnerable to heat.
alternatives to grass
Alternatives such as
larger areas of permeable paving, stepping stones, mulched areas or massed
plantings will reduce maintenance and water use.
Unlike lawns, mulches generally reduce water
loss from soils and can suppress weed growth.
Mulches can cover areas with or without plants. Some types such as
granite can be used to form natural pathways
creating a grassland in canberra
Before European settlement there were many
beautiful lowland native grasslands. Once invasive exotic species have been
removed, it is easy to recreate this theme by combining grasses, rushes,
flowers and shrubs. There are a huge
variety of local species that do not require supplementary watering nor
excessive maintenance and resources and are easy to establish following the
water wise gardening principles. Some of
those species include but are not limited to:
grasses I Austrodanthonia sp., Austrostipa elegantissima,
Bothriochloa macra, Microlaena stipoides, Poa labillarderi, Poa sieberiana,
Themeda australis
understorey plants I Brachyscome
multifida, Bracteantha bracteata, Chrysocephalum apiculatum, Correa reflexa,
Crowea exaltata, Dicondra repens, Dianella revoluta, Hardenbergia violacea,
Hibbertia obtusifolia and pedunculata, Lomandra longifolia, Stylidium
graminifolium, Wahlenbergia communis and stricta, Viola hederacae trees and shrubs I Acacia
buxifolia, pravissima and rubida, Allocasuarina littoralis, Banksia ericifolia
and spinulosa, Callistemon phoeniceus, Eriostemon myoporoides, Eucalyptus
mannifera, moorei and rossii, Grevillea arenaria and lanigera, Kunzea
parvifolia, Melaleuca armillaris and incana
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