Pallet Collar Beds: Stackable Wooden Collars as Beds
Pallet collar beds reuse hinged shipping frames as raised beds. A collar folds flat and stacks to the height you want. NC State Extension says raised beds are generally 8 to 12 inches high.
The short answer
One or two pallet collars can give the 8 to 12 inch bed height that NC State Extension describes. Georgia Extension sets a 10 inch minimum for most crops, so stack enough collars to clear it. Fill with garden soil and compost, mulch the top and fold the collars flat when the bed is no longer needed.
What is a pallet collar bed?
A collar is four boards joined at the corners with steel hinges. In shipping it rides on a pallet, but in a garden it rests on the ground. NC State Extension says raised beds work well when just wide enough to reach the center, and a 40 inch collar fits that.
How many collars should you stack?
Georgia Extension says most garden crops need at least 10 inches of soil and that 10 inches may not be enough for potatoes on a hard surface. Minnesota adds that taller beds need water more often.
| Collars | Bed height | Use |
|---|---|---|
| 1 | Low bed | Over loosened soil |
| 2 | Deeper bed | Most crops |
| 3 | Tallest bed | Wheelchair height per Georgia |
How do you fill and care for them?
Missouri Extension says adding compost raises the bed and improves soil structure. Loosen the ground below so roots reach deeper, as in soil compaction in cannabis beds. Top the soil with mulch, covered in mulch for cannabis. Read how site conditions change across a yard in garden microclimates for cannabis.
How to: step by step
- Loosen the soil where the bed will sit.
- Unfold a collar and set it level.
- Stack a second collar for crops that root deep.
- Fill with garden soil mixed with compost.
- Mulch and water.
Troubleshooting
Soil dries fast: water more often, as Minnesota notes for tall beds.
Bed too heavy to move: empty it, then fold the collars flat.
Want more bed ideas: see raised beds for cannabis.
Stack only what you need
Fewer collars mean less fill and watering. Kind Seed Co shares more garden notes for growers who build their own beds.
Sources
- Extension Gardener Handbook, chapter 16: Vegetable gardening, NC State Extension
- Raised bed gardens, University of Minnesota Extension
- Gardening in raised beds and containers in the Northern Great Plains (P-00301), South Dakota State University Extension
- Raised-bed gardening (G6985), University of Missouri Extension
- Raised garden bed dimensions (C1027-4), University of Georgia Extension
FAQ
What are pallet collars made of?
Most are four wooden boards joined with steel hinges. NC State Extension says raised bed sides should be made of a rot resistant material.
How deep should a pallet collar bed be?
NC State Extension says raised beds are generally 8 to 12 inches high, and Georgia Extension says most crops need at least 10 inches of soil.
Can collars be stacked and removed?
Yes. Collars stack to the height you need and fold flat when the bed is no longer needed.
How long do pallet collars last?
No source rates collars. South Dakota State says rot resistant woods such as cedar may last 15 to 30 years, and Minnesota says softwoods like pine wear out sooner.
Do tall collar beds need more water?
Yes. Minnesota Extension says the taller the raised bed, the more often you need to water.
