Shrub Spacing Reference

Spacing is a business decision as much as a horticultural one. Tight spacing looks finished on day one and photographs well, but it doubles plant count, invites disease in humid springs, and guarantees shearing labor forever. The reference below is built around mature width, with a practical adjustment for how each planting is used.

The base rules

• Specimen or open bed planting: space at full mature width.
• Solid hedge or screen: space at 60 to 75 percent of mature width so plants knit together.
• Foundation rows: space at mature width, and hold the row at least half the mature width off the slab — plus room to walk for maintenance and window access.
• Never design to the container size. A 3-gallon dwarf yaupon and a 3-gallon elaeagnus are the same pot and wildly different plants.

Count math worth memorizing

Plants per row = (row length in inches / spacing in inches) + 1. A 60-foot hedge at 30-inch centers is 720 / 30 + 1 = 25 plants. For double-row staggered screens, offset the second row by half the spacing and multiply by two, minus one. Always round up and add the waste factor from the estimating reference (2 to 5 percent on container shrubs) — a hedge with one dead soldier reads as a failure even when 96 percent survived.

Local adjustments

• Against west walls with reflected heat, open spacing by one increment — plants there run smaller and airflow matters more.
• In irrigated commercial beds with drip, plants hit mature width faster than the tag suggests; do not tighten spacing to compensate for a thin first year.
• For privacy screens the client wants solid in two seasons, quote the honest options: bigger material at correct spacing, or standard material tight with a thinning visit in year three. Tight spacing with no thinning plan is a callback.
• Leave 30 to 36 inches between shrub rows and turf edges so mowers and edgers never touch the plants.

If you are pricing a hedge or screen and want to sanity-check counts against material actually on the ground, call the yard with the linear footage — we will run the math against in-stock sizes and quote both spacing options.

Order 5 to 8 percent extra on any hedge or screen over 50 linear feet, and hold the overage at the same nursery batch instead of reordering later — a replacement pulled from a different batch six months on will stand out in size, color, and habit for a full growing season. Note the batch or lot number on the delivery ticket so a warranty replacement still matches the original run, and tell the client up front that a single dead plant gets a same-batch swap, not a guess from whatever is on the rack that week.