Outdoor · Beginner · 3–6 hours
Garden Planter Box
A raised outdoor planter concept with drainage and replaceable liner options.
30 × 14 × 16 inPlanning reference
Planning reference: verify all dimensions, loads, fasteners, joinery and tool procedures for your actual materials and application before building.
Why build it
This project introduces outdoor material selection, drainage, fastener corrosion resistance and seasonal wood movement.
Materials
- Outdoor-suitable lumber
- Exterior-rated fasteners
- Optional liner
- Exterior finish
- Feet or spacers
Starter cut list
| Part | Qty | Length | Width |
|---|---|---|---|
| Long side | 2 | 30 in | 12 in |
| Short side | 2 | 12.5 in | 12 in |
| Bottom slat | 5 | 12.5 in | 4 in |
| Corner cleat | 4 | 12 in | 1.5 in |
Build sequence
- Choose species, treatment and fasteners suitable for outdoor exposure.
- Plan drainage gaps and keep vulnerable end grain away from standing water.
- Cut side panels and corner cleats, then predrill near board ends.
- Assemble square and fit bottom slats with drainage gaps.
- Apply finish as directed and maintain seasonally.
Variations
| Variation | Width | Depth | Note |
|---|---|---|---|
| Herb box | 24 in | 9 in | Shallower footprint for herbs on a balcony or windowside area. |
| Long planter | 42 in | 14 in | Extended length for patios; add structure if boards may bow. |
| Raised stand | 30 in | 14 in | Place the box on a separate stand to increase working height. |