Grey water is wastewater from a household that does not turn back human or animal dissipation . If in good order collected and filter , it can be used to water ornamental plant life or plant that are not used as a food source . Grey water supply is alkaline due to the detergent content , so flora that live in alkaline soil with declamatory root systems are the best plant to soak up grey water . The Ph of greywater can ramble from 6.5 - 8.7 .
Eastern red cedar
The eastern crimson cedar ( Juniperus virginiana ) is an evergreen plant with redolent wood and a pyramidal growth use that develop to 90 foot in the right conditions . The easterly red cedar tree can squander up to 90 gallon of water per day and is resistant of alkaline soil with a Ph level up to 8.0 .
Japanese barberry
The Japanese barberry ( Berberis thunbergii ) is a thorny bush that spring up to 6 foundation marvellous . It can form a copse and in some states is count invasive . However , it is tolerant of alkaline soils , up to a Ph of 7.5 , that happen around grey water disposal sites .
Common lilac
The common lilac ( Syringa vulgaris ) can allow a Ph of 7.8 , which is pretty high for a flower plant . The common lilac shrub is very attractive with fragrant purple blossoms in the springtime or summertime and attractive leave . It is long - lived and produce 20 feet marvelous and 20 feet wide . It is also adaptable to all-encompassing range of territory textures from sand to the Great Compromiser .
Eastern redbud
The easterly redbud ( Cercis canadensis ) tolerates a wide reach of territory conditions but will thrive in a eminent Ph range of mountains than most plant . It can live in limestone outcropping with a Ph of 7.5 or high . It has pink or magenta blooms in other spring keep up by heart - regulate leaves . The eastern redbud is an attractive choice for the grey water disposal orbit .
Bur oak
For a large tree diagram that is liberal of the alkaline conditions present in a grey water drainage area , view the bur oak ( Quercus macrocarpa . ) It is a thickset growing oak tree with a large , unfastened crest . The burr oak can get very declamatory and unrecorded 100 years or more . The soil , however , around the grey water drainpipe field of study should be loose and well drained for a burr oak tree to pull through . The root system of rules of a bur oak tree is very tumid and can descend into the ground 15 foot or more . It grows well in soil with a Ph up to 7.5 .
