Two beds side-by-side, one I dig every winter and incorporate the compost, the other has the same quantity of compost spread on top. I have done this in earl
Tuft & Needle - Hybrid Full Mattress with Adaptive
Trials (including the two-bed dig/no dig comparison)
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Dig vs no dig trial beds
Comparing growth and harvests in adjacent strips, dug/forked and no dig
Dig Versus No Dig
No-dig or double dig? - Northern Homestead
RHS No Dig Allotment Demonstration Garden - Stephanie Hafferty
Trials (including the two-bed dig/no dig comparison)
How a No-Dig Garden Leads to Healthier Soil and Thriving Plants
What is the no dig method? Charles Dowding demystifies