Cupster
Raised Garden Bed
RARITYSEpic

Raised Garden Bed

Good soil is built, not found. A frame turns concrete, rubble, or dead clay into a working bed.

The First Move

  • Food
  • Build
  • Balcony
  • Garden
  • Dead ground
Value Ratio
9.0/10
Versatility
9.0/10
Impact
9.5/10
Durability
9.0/10
Difficulty
2.5/10
Reddit
Recommended FormTimber, 1.2m × 2.4m × 30cm
Best UsedSpring build, full sun
ImportanceVery High
DifficultyBeginner
Depth decides the crop
15 cmSalads and herbs
30 cmMost vegetables
tomatoes, beans, courgettes
45 cm+Deep roots, and sits on a hard surface
carrots, potatoes
Strengths
Grows on any ground
Make your own soil
Far less bending
Warmer, longer season
The fill

Build it up in layers: coarse and free at the bottom, fine and bought at the top. Only the top layer needs buying well.

Top · 20–30 cmBuy

Planting mix: half topsoil, a third compost, the rest aged manure.

BridgeFree

Upturned turf or cardboard. Stops the fine soil washing down into the gaps.

MiddleFree

Brush, leaves, and grass. Rots fast and feeds the bed the first season.

BottomFree

Logs and woody prunings. Free volume that holds water for years.

Synergies
  • Dimpled Membrane
  • ComposterShelter & Build
  • Rain BarrelWater
Watch For
  • Open base on soil, drained base on a hard surface.

  • Never use pressure-treated or railway-sleeper timber.

  • Untreated timber lasts about ten years.

  • Raised beds dry faster, so plan the watering.

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