Set the hive count, spacing, distance to the boundary and an optional flyway barrier to see the real footprint a UK apiary needs — and whether departing bees clear head height before crossing into a neighbour's garden.
How it works ▾
The footprint is the working room around the hive row plus the clear distance to the boundary — the article's real limiting factor, not the hives' own floor space:
width = (n−1)·spacing + hiveW + 2·sideClear
depth = boundary + hiveD + backClear
area = width × depth
A departing bee climbs at roughly 20° from the entrance. A flyway barrier — a fence, trellis or hedge placed close to the hive — forces it up to at least the barrier's own height before it keeps climbing at the same angle toward the boundary:
h(barrier) = max(barrierH, launch + tanθ·dist_b)
h(boundary) = h(barrier) + tanθ·(boundary − dist_b)
If the height at the boundary line is below an average head height (1.8 m), bees are still low enough to cross into a neighbour's garden at face level — the classic source of complaints. Raise the barrier or the boundary distance to clear it.
- Hive count & spacing — more hives, or more room between stands, cuts drifting but grows the footprint.
- Boundary distance — the article's rule of thumb is 3–4 m minimum for a bee to gain height on its own.
- Flyway barrier — ~2 m of fence, trellis or hedge right in front of the entrance is the standard fix when that distance isn't available.