Raised beds — advantages, disadvantages and what to fill them with
In short: Raised beds have fanatical supporters. But you need to know what to fill them with — just bagged soil becomes nutritional wasteland after a year.
Raised beds — how to fill them so they work
Advantages:
- Warmer soil, earlier start
- No soil compaction
- Better substrate control
- Work comfort
Disadvantages:
- Cost of construction and filling
- Faster drying out
- After 2–3 years settling, requires refilling
How to fill (Hugelkultur method, from bottom):
- Thick wood (branches, stumps) — retains moisture, decomposes over years
- Smaller branches, plant debris, cardboard
- Compost or mature manure (10–15 cm)
- Top: good garden soil + compost 50/50
Minimal version without wood:
- 1/3 leaves, straw
- 1/3 compost
- 1/3 garden soil
Height: 30 cm minimum for root vegetables, 40–60 cm optimal.
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