The most common and most expensive planting mistake is putting plants too close together because the bed looks empty on day one.
Why overplanting happens
A new bed with correctly spaced young plants looks sparse. It is supposed to.
The temptation is to fill the gaps, and three years later the bed is a solid mass with plants crowding each other and the house.
Crowded plants compete for light and water, grow thin and leggy, and hold humidity that encourages disease.
Then they get sheared into shapes to control them, which is how a designed planting turns into a row of green lumps.
Space by mature size, not nursery size
Read the tag for mature width, not just height, and treat that as the real footprint.
For a bed of the same shrub, space centre to centre at roughly the mature width — closer only where you deliberately want a solid mass or hedge.
For mixed plantings, space adjacent plants at roughly half of each one's mature width added together.
Set plants back from the house, walkways and driveways by at least half their mature width, so they never have to be cut back off the path.
Trees need clearance from the house, drives, utilities, walls and each other — and from any septic drain field.
Filling the gaps the right way
Use perennials, ornamental grasses and annuals in the spaces between young shrubs. They fill quickly and are easy to remove as the shrubs grow.
Mulch the bare soil properly in the meantime; it looks intentional and suppresses weeds.
Buy fewer, better plants at a reasonable size rather than more small ones crammed together.
Accept two or three seasons of establishment. That is the trade for a planting that still looks good in year ten.
Fixing an overplanted bed
Remove rather than shear. Taking out every second shrub often transforms a crowded bed in an afternoon.
Some crowded shrubs can be transplanted elsewhere if moved at the right time of year.
Renovation pruning can restore shape on plants that were sheared for years, though it takes seasons.
Southern Style Turf & Design plans and installs planting across the Lake Norman area with mature size in mind, and renovates overgrown beds that were planted too tightly.
Frequently asked questions
How far apart should I plant shrubs?
Generally at their mature width, centre to centre, unless you specifically want a solid hedge. Check the tag for mature width, not height.
My new bed looks empty — did we plant too few?
Probably not. Correctly spaced plantings look sparse for two to three seasons. Perennials and mulch bridge the gap.
Can I move shrubs that were planted too close?
Often yes, if moved during the right season and handled properly. Removing some entirely is sometimes the better outcome.
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