Wiktionary
run to seed
vb. (alternative form of go to seed English)
Usage examples of "run to seed".
The patio had run to seed but it was still beautiful, with banana trees heavy with hard green fruit and a huge white oleander that overhung the wall like a nebula.
An acre of overgrown garden completely run to seed, ten foot high hedges that hadn't felt a clipper in years, and dripping pines and cypresses soughing under a dark and weeping sky.