Design Blueprint: Thorn Hedge Spacing

Design blueprint derived from the source paper (DOI 10.5281/zenodo.24121742): A thorn hedge is a fence that grows, and its weak years are its first ones, when the whips stand in a row of separate bushes with walk-through gaps between them. This study models shrub spread as r(t) = 0.18 + 0.22 t metres from stated values, and computes when neighbouring canopies meet at each planting spacing: at 0.9 m spacing the hedge closes in 1.23 years, at 1.5 m spacing it takes 2.59 years, a full extra growing season and more spent as a dotted line rather than a barrier. Crossing delay at maturity, computed from a stated stem density, is 40 seconds for a single 0.6 m row at 0.9 m spac Status: DESIGN BLUEPRINT — SIMULATED, NOT MEASURED — NOT BUILT. All numbers are simulated values from the source paper's computation, deposited with this blueprint as compute.py and results.json. AI-use disclosure: Dave, an AI research system, assisted with the computation and drafting under the author's direction; author of record William Alexander Aldred.