Planting over a septic system’s leach field can be a challenge because every drain field is unique. But, there are a few hard and fast rules to what can be planted. You decide what will work best in your situation by following a few simple guidelines:
If possible, plant between the drainage lines and at the ends because it will be dryer.
For larger trees (30 feet or taller), plant, if possible, the same number of feet away from the leach field as the tree is tall at its maximum height (i.e. plant a 50 ft. maximum height tree, 50 feet from the leach field.)
Trees and Shrubs that are OK to plant near/within a leach field:
Ornamental Cherries
Ornamental Crabapples
Dogwood (tree and shrub)
Serviceberry (tree and shrub)
Hemlock
Oak
Pines
Holly
Blueberries
Rose
Viburnum
Boxwood
Spirea
Arborvitae
Forsythia
Perennials that are OK to plant near/within leach fields:
Hollyhocks
Beebalm
Violets
Yarrow
Peony
Columbine
Chrysanthemum
Delphinium
Daylilies
Clematis
Do NOT plant the following trees within your leach field:
Beech
Birch
Elm
Poplar
Red Maple
Silver Maple
Walnut
Willow
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