You secure landscape timbers by anchoring them firmly to the ground and tying each piece to the next so nothing can shift, heave, or blow out of place over time.

Quick Scoop

  • Use rebar or landscape spikes through pre‑drilled holes for most edging, beds, and low walls.
  • Set timbers in a shallow trench on compacted base so they can’t roll or slide.
  • On slopes or taller walls, combine vertical pins (rebar/pipe) with staggered joints and occasional deadmen or stakes.
  • Choose pressure‑treated, ground‑contact lumber and add drainage so the structure lasts more than a few seasons.

Step‑by‑step: Basic edging or raised bed

  1. Plan and mark the layout
    • Spray paint, rope, or a garden hose to outline curves or corners.
 * Measure lengths so you know where joints will land; avoid having several joints line up.
  1. Excavate a shallow trench
    • Remove sod and dig a trench roughly the timber’s thickness deep so the first course sits partly below grade.
 * Compact the soil and, if possible, add 1–2 inches of gravel for drainage and stability.
  1. Set and level the first course
    • Lay the first row of timbers in the trench and level them side‑to‑side and along the run.
    • Use a hand tamper or sledge on a scrap board to settle them into the base.
  1. Drill for rebar or spikes
    • Mark holes every 3–4 feet along the timber and within 6–8 inches of each end.
 * Drill straight down through the timber with a bit sized for your rebar or spikes (commonly around 3/8 inch for rebar).
  1. Drive rebar/spikes into the ground
    • Use 12–18 inch rebar or landscape spikes for most low edging or beds (taller structures may need longer pieces).
 * Hammer them through the timber until they penetrate 12–18 inches into the ground and sit flush or slightly below the wood surface.
  1. Stack additional courses (if any)
    • Stagger joints between courses like brickwork for strength.
 * Screw, spike, or pin each upper timber down into the one below using long structural screws, spike nails, or more rebar.
  1. Backfill and compact
    • Backfill on both sides with soil or gravel, compacting in thin lifts so the timbers stay braced.
 * Inside raised beds, fill with soil only after the frame is fully secured and checked for level.

Extra secure methods (slopes, tall walls, heavy use)

  • Vertical steel pipe or long rebar
    • For big timbers or slopes, drive steel pipe or long rebar through stacked timbers and well into the subsoil to lock everything together against gravity.
  • Deadmen or tie‑backs
    • On retaining‑style walls, run a timber perpendicular to the wall back into the slope, buried and tied to the wall course, to resist outward pressure.
  • Stakes and brackets
    • Use metal or wood stakes driven just inside the edging every 2–3 feet, then screw the timber to the stakes.
* Interior corner and flat brackets screwed inside the bed add stiffness and keep corners from opening.
  • Spike nails for multi‑layer builds
    • Galvanized spike nails driven straight through multiple courses can lock them together without pre‑drilling in softer wood.

Durability and rot prevention

  • Use pressure‑treated, ground‑contact rated landscape timbers to resist rot and insects.
  • Provide drainage: gravel base, weep gaps, or drain tile behind retaining sections so water doesn’t sit against the wood.
  • Apply a wood preservative or exterior sealant to cut ends and exposed faces to extend life.
  • A landscape fabric layer under raised beds or edging can help with weed control and reduce constant wet soil contact.

Mini “forum‑style” note (feel of what people say)

“I used to move my border timbers after every big storm until I drilled them and drove rebar through into the ground—haven’t had one shift since.”

DIYers in recent years often lean toward rebar plus a compacted gravel base, especially as storms and intense rain events have become more common, because that combo handles washouts and frost heave better.

TL;DR:
Dig a shallow trench, set and level the timbers, drill straight down every few feet, then drive 12–18 inch rebar or landscape spikes through into the ground, staggering joints and adding stakes or brackets where you need extra strength.

Information gathered from public forums or data available on the internet and portrayed here.