Trees watering techniques that optimize water conservation Trees
do not require much water -about 2.5 cm/one inch of water per
week. No water is a great threat - especially for those that are
newly planted. A young tree will cost less than a quarter to
water per week.* Please make optimal use of water through
conservation practices such as watering in the morning or
evening to reduce evaporation loss. When watering trees it is
important to saturate the soil around the tree continuing out to
the outer branches to disperse water down to the roots. A cost
estimate to water a new tree with the equivalent of about 2.5 cm
of rain per week around the tree base (1.5m radius) is 190
litres per week (0.19 m3) which at $1.19/m3 costs less than a
quarter (23 cents per week).