Rejuvenating a Formal Hedge: Gradual Thinning or Hard Pruning

Faced with a horrid formal hedge—tangled thicket or spindly bare wood? Before digging it out, try rejuvenation for a more natural look.

Framework-Branched Shrubs (Gradual)

Don't remove >⅓ growth per year. Year 1: thin dense outer twig clusters throughout crown; cut each back to a lateral. Remove weak/crossing branches. Year 2: continue removing twiggy clusters and poorly placed new growth. Year 3: hedge should look more natural.

Base-Growing Shrubs (Hard Prune)

Fast-growing deciduous shrubs (e.g., common privet Ligustrum vulgare) can be cut to ground, then regrown. Check with nursery/Extension first—if unsuitable, follow gradual method in Salvaging Old Shrubs.

Process: Cut all growth to ~6″ above ground just before spring dormancy break. Remove debris, weeds, interlopers. When new growth emerges, apply controlled-release complete fertilizer; water thoroughly; mulch. Monthly for rest of season, reduce new growth by half to encourage side branching and density. Slope sides as you cut.

Maintenance: Until desired height, cut back by half monthly during growing season. Once target height reached, clip at least twice yearly (late spring, midsummer) for size, shape, density.