Lavender rewards confident pruning—but only within strict limits. Cut too deep into the woody base and you’ll likely kill the plant by midsummer. Discover why lavender’s biology makes it fundamentally different from other shrubs, and how professional growers prevent the devastating split.
A perfectly healthy lavender border dies mysteriously over three seasons—not from drought or frost, but from something inches away. The culprit? Cement mortar in paving joints, slowly leaching lime into the soil. Here’s the science behind the damage and how to fix it.
Cutting lavender down to bare wood in spring seems logical—until every plant dies by summer. Unlike typical perennials, lavender won’t regrow from old wood, and there’s a critical two-inch margin between thriving and fatal pruning mistakes.
Lavender stems can’t regenerate from hardened wood—only green tissue can produce new growth. Pruning in April removes the very growth the plant spent winter preparing, almost guaranteeing failure. Master the two critical pruning windows and the one-third rule to keep your lavender lush and blooming.