Definition of double digging in English:

double digging

noun

mass noun
  • (in gardening) digging of an area in parallel trenches two spits deep, burying the soil of each upper spit in the bottom of the next trench.

    • ‘Though he knows it can benefit the soil, he doesn't bother with double digging.’
    • ‘Landscaping was done last summer and double digging of the beds to prepare for planting,’ she explained.’
    • ‘The problem is that walking on earth compacts it, causing a need for deep double digging in spring to get the air back in the soil.’