General performance
5 - Very effective
Unintended positive side effects of practice
1 - Yes
Details
Easier to protect from frost in spring
Unintended negative side effect of practice
1 - Yes
Details
Some perennial weeds persist in growing up through the deep bed from roots outside
Knowledge and skills required for practice
2 - Rather low specialised knowledge required
Labour required for practice
3 - Neither height nor low labour required
Details
High labour to construct but low labour to use
Cost associated with practice
4 - Rather high costs
Details
Initial costs but then low
Does it work in degraded environments?
5 - Works well in depleted environment
Details
It will work on any soil but high quality compost and manure needed to fill the bed.
Does it help restore land?
2 - Rather uneffective
Details
No effect on the surrounding land.
Climate change vulnerability effects
4 - Rather effective
Details
Moisture conserving so increased resilience to drought
Time requirements
4 - Works rather rapidly
Details
Good results in the first season