Caring for Oregano

Oregano is a low-maintenance herb that thrives on neglect once established. Water sparingly—oregano has low water needs and develops the strongest flavour in dryish conditions. In spring and early summer, water young plants lightly if the soil dries out completely, but established oregano rarely needs watering except during prolonged drought. Overwatering or poorly drained soil encourages root rot and dilutes the essential oils that give oregano its pungency. Feeding is not necessary. Oregano grows naturally on poor, stony soils in the Mediterranean, and rich or heavily fertilised soil produces lush but flavourless foliage. Avoid adding compost, manure, or general-purpose fertilisers. If your soil is very poor, a light dressing of blood, fish and bone in early spring is more than sufficient, but most gardeners find oregano does perfectly well with no feeding at all. Oregano is fully hardy across temperate Europe (zone 4a–9a) and requires no winter protection. The foliage may die back partially in cold winters, but the plant will regrow vigorously from the base in spring. In wet winters, ensure the crown isn't sitting in waterlogged soil, as this is the main cause of winter losses. Pests are rarely a problem. Oregano's aromatic oils deter most insects, though aphids occasionally cluster on soft new growth in spring—simply pinch out affected shoot tips or rinse them off with water. Diseases are uncommon if drainage is good, but root rot and fungal issues can occur in heavy, wet soils. Mulching around oregano is best avoided, as it traps moisture; if you mulch nearby plants, keep a clear circle around the oregano's crown.