Black Spots on Mint: Sunburn or Watering Issue?

A "Mojito" mint in a sunny east window shows black leaf edges. The pot dries daily, requiring daily watering. Owner plans to move it to a barrel outside.

Assessment

Elyse asks: Are they dry, crispy edges (sun/heat) or true wet spots? Mint likes moisture—daily watering in a container isn't necessarily excessive. Check soil 1 inch down before watering.

Likely Cause

Hot sun through the window may be scorching the leaves. The move outdoors (with acclimation) should help if the barrel provides better root run and less intense midday sun.