Reference
How Far From the House to Plant Foundation Shrubs
The short answer
Space foundation shrubs by their mature size, not their nursery size: extension guidance puts larger shrubs about 5 to 6 feet from the house and smaller ones at least 3 to 4 feet away, inside a planting bed 6 to 9 feet wide. Keep the lowest, front-of-bed plants to a mature height of only 2 to 4 feet so they don't swallow the windows.
Leave the last foot next to the foundation free of wood mulch — bare, or filled with stone — to keep moisture and termites off the wall, and grade the bed to fall away from the house so water drains toward the lawn. The point of all the setback is airflow, dry walls, and room to prune or paint without fighting through overgrown shrubs.
Set the distance by mature size, not pot size
The classic foundation-planting error is buying a tidy 2-foot shrub in a 3-gallon pot and tucking it a foot from the wall — then watching it mature to 6 or 8 feet wide and shove itself against the siding. Space for the size on the plant tag, not the size in your cart, even if the bed looks sparse the first year or two.
As a working rule from extension guidance, keep larger shrubs about 5 to 6 feet from the house and smaller shrubs at least 3 to 4 feet away. A quick mental check for any given shrub: it needs at least half its mature spread of clearance from the wall, so a shrub that matures 8 feet wide wants roughly 4 feet of setback minimum.
The same 'plan for mature size' logic scales up to trees, which need far more room and have roots and canopies to worry about — see our guide on how far to plant a tree from the house.
Bed width, window height, and the mulch gap at the wall
Make the bed generous: a foundation bed 6 to 9 feet wide from the wall to its front edge gives shrubs room to reach mature size without crowding the house, and leaves you a path to walk behind them for pruning, cleaning gutters, or painting.
Keep the front row low. Shrubs planted under windows should top out around a mature height of 2 to 4 feet so they frame the house instead of blocking the glass and darkening rooms — a common reason overgrown foundation plantings end up ripped out.
Leave the foot of ground right against the foundation free of wood mulch, either bare or filled with stone or crushed granite. Wood mulch piled against the wall holds moisture and invites termites; a mulch-free strip keeps the wall drier and the structure safer.
Why the setback matters: moisture, foundation, and access
Airflow is the quiet reason for all this spacing. Shrubs jammed against a wall trap humidity, stay wet longer after rain and irrigation, and mildew or rot more readily — both the plants and, over time, the siding behind them.
Grade the bed so it slopes away from the house, dropping roughly 6 inches over every 10 feet, so water drains toward the lawn rather than pooling at the foundation. Keeping larger shrubs and any trees well back also keeps vigorous roots away from utilities, plumbing, and the foundation itself.
Finally, setback is maintenance access. A shrub you can reach around is a shrub you can shape, thin, and inspect. One growing tight to the wall forces awkward one-sided pruning and hides problems — pests, leaks, cracks — until they are serious.
Sources
Reviewed 2026-07-18. We cite university Extension, government, and established horticultural sources — and never invent pesticide rates or dangerous treatments.
- LSU AgCenter — Designing and Planting Foundation Beds — Plant large shrubs 5 to 6 feet away from the house and smaller shrubs at least 3 to 4 feet away; make foundation beds 6 to 9 feet wide from the home to the farthest edge; choose front shrubs with a maximum height of 2 to 4 feet so they don't block windows; keep mulch (especially wood) one foot from the foundation to prevent termites, using rock or crushed granite in that gap; slope the bed to descend 6 inches for every 10 feet away from the house for drainage.