Page 29 - Landscape SA Issue 107

HYDROZONING

Zone into high/medium/

low/very low water use

areas

A hydrozone in a landscape refers to each section of the landscape that is watered

using the same valve i.e. the hydrozone (hydrostation) in question is watered as a
unit. Hence, each area in a landscape or garden that is individually watered must
be assessed separately

HIGH ZONE VERY LOW ZONE
• This should be no more than 10 - 30% of the landscape. • This should make up between 40% and 100% of the
• Plant water-loving annuals/plants in selected high water landscape.
use areas e.g. entrances, entertainment areas, containers • Consists of mainly locally indigenous trees, shrubs and
and focal points. other plants.
• Avoid long winding borders of colour - impractical to water. • Permeable paving rather than solid non permeable paving
• Use colour in containers. should be used in this zone.

MEDIUM ZONE The proportions of landscapes or gardens allocated to each
• This should make up between 20% and 40% of the zone is based on the principle that sites should be landscaped
landscape. by considering certain maximum areas of the site allocated to
• Can incorprate the bulk of the garden or landscape. different hydrozones. This is used merely as a guide; however, it
• Consists mainly of shrubs, perennials, ground cover and is believed that because South Africa is a water stressed country
lawn. that the areas allocated to high hydrozones should be minimal.
If a landscape doesn’t have high
LOW ZONE and/or medium hydrozones then a
• Makes up between 30% and 60% of the landscape. greater area should be allocated to
• Is the backbone of the design. other lower water hydrozones.
• Is mainly trees, large shrubs, limited small Mediterranean
type shrubs, succulents and aloes.

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