How to cut your water bill by 50%!

When Heronswood’s latest water bill arrived we couldn’t believe our eyes – we had cut our usage by 50% and still maintained a lush green garden!
This is the story of how we did it:

1) We stopped watering our lawn
Victoria’s water restrictions began in late 2003, our lawn dried out, but it cut our water bill dramatically. At Heronswood our magnificent shade tree (Desert Ash), cooled us down on those 40°C days. We learned to enjoy the straw coloured tones of grass as if we were looking at a Van Gogh painting. Our Kikuyu lawn greened up again in April without gaps and none of our visitors complained.
2) We only planted one drip (drought tolerant) plants
This cut the water use by 80% on those 3 drip water hogs like Rhododendrons, Silver Birch and Gardenias. Our garden is a display of Digger’s plants that we have researched and selected over 15 years, so you now have 300 drought-tolerant plants to choose from.
3) Our organic soils hold water well
We have a light sandy soil, which is easy to work, but it dries out too quickly. However, we have been adding our own composts and manures for the last 21 years and those organic particles help grab water before it passes through!
4) Never expose your soil to the sun!
We always cover our soil with either plant foliage or mulch. Exposed soil dries our garden beds, and high temperatures kill plants. Mulching reduces soil temperatures and evaporation and of course prevents weeds getting started.
5) Set sprinklers for minimal wastage.
In Victoria we are allowed to water our garden beds at night which minimizes daytime evaporation. We cleaned our pulsating sprinkler heads, checked our computer timings and then sprinkler angles, to make sure our sprinklers didn’t double up or miss any parts of the garden. We could cut our bill by a further 20% if we switch from overhead watering to drip irrigation.
6) Further savings we can make.
Like every other garden we still have parts that need extra water such as four vegetable gardens. So you can have a lush green garden without planting dry arid type plants.
It's as easy as not watering your lawn.

Plant water needs: Drought tolerant Needs seasonal water Needs to be continuously moist
We watered our flower border and still saved 50%.
Dry Foliage look
Shrubs that will cut water by 80%.
drip plants survive hot dry summers.
Bay Tree
Carob
Cape Chestnut
Catalpa
Desert Ash
Fig
Honey Locust
Judas Tree
Jujube
Kapok Tree
Mulberry

Lush Foliage look
Oak Holm
Oak Cork
Ombu Tree
Peppercorn
Pistachio
Pomegranate
Podocarpus (pictured)
Quince
Robinia
Sophora japonica
Strawberry Tree

Allocasuarina
Banksia
Callistemon

Cedar (Cedrus)
Eucalypt
Melaleuca

Olive
Pinus pinea
Russian Olive
(pictured)
Tristaniopsis
Wattle (Acacia)

Alyogyne
Box
Brugmansia
Buddleja
Ceanothus
Cestrum
Cotoneaster
Crotalaria
Echium

Solanum rantonetti
Lavatera
Natal Plum
Plectranthus
Rosemary
(picured)
Tree Lupin
Wormwood

Bridal Veil Broom
Callistemon
Cistus
Convolvulus
Hakea

Heronswood's water use:
Heronswood Jan-June Jan-June
House & Garden 2.23 milion ltrs 4.4 million ltrs
Seasons
12 months
Winter .335 10% House only
Spring .841 25% Garden water starts (Oct)
Summer 1.507 44% Mostly garden
Autumn .723 21% Sprinklers stop (April)
Total 3.40 million lts
Heronswood garden is nearly 2 hectares - about the size of 20 house blocks.
Bulbs to choose
Perennials to choose
Acanthus
Arthropodium
Agapanthus

Artichoke
Ballota
Catmint
Clivia
Dianthus
Euphorbia

Grasses
Guava Kniphofia
Marjoram
Russian Sage

Grape Hyacinths
Snowflakes
Vallota
Winter Iris

Aristea
B. Iris
Bluebells
Daffodils
Dietes
Dierama
Eremurus
Freesias
Ixias
Nerine
Morea

Sedum
Salvias

Sisyrinchium
Statice
Succulents
Tagetes

Very thirsty shrubs to avoid
Very thirsty trees to avoid
Alder
Beech
Birch
(pictured)
Chestnut
Davidia
Giant Sequioa
Horse Chestnut

Azalea
Bouvardia
Brunsfelsia
Camellia
Daphne
Eucryphia
Hydrangea (pictured)
Magnolia
Rhododendron

Linden (Tilia)
Maple
Poplars
Tulip Tree
(Lirodendron)

Willow
Yew

Lavender
Oceander
Romneya
Tree Poppy

 



 


 


 

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We watered our vegetable parterre and still saved 50%.
Trees that will cut water by 80%.
drip plants survive hot dry summers.

Dry Foliage look
Lush Foliage look