Trees shade in summer leaf and admit sun once bare in winter; slow to establish, zero embodied carbon.
Note: Cost, carbon and footprint are rated against the other options for this same need, not in absolute terms.
Space for mature canopy spread without shading winter-gain glazing or damaging foundations with roots
none
none
No sizing or quantities: how much a technique yields, and how much a household needs, both depend on the build and the people, so the catalogue compares options rather than dimensioning them. It carries no bill of materials and no build sequence, and it is written for an oceanic, clay-soil climate (Normandy, France). Regulatory notes are indicative and need confirming locally.