Oregano (Origanum vulgare) is a hardy perennial herb known for its aromatic foliage and culinary uses. In a herb garden, companion planting with oregano can enhance growth, deter pests, and improve soil health. Oregano thrives in well-drained soil and full sun, making it compatible with plants that share similar growing conditions.
Companion planting with oregano offers several advantages:
Below are the top companion plants for oregano, categorized by their benefits:
Basil (Ocimum basilicum): Basil and oregano share similar sunlight and water needs. Oregano’s pest-repellent properties protect basil from thrips and whiteflies. Thyme (Thymus vulgaris): Both herbs prefer dry, sandy soil and thrive together without competing for resources. Sage (Salvia officinalis): Sage’s tall growth complements oregano’s spreading habit, creating a layered garden effect.
Tomatoes (Solanum lycopersicum): Oregano deters tomato hornworms and improves flavor when planted nearby. Peppers (Capsicum annuum): The herb’s scent repels aphids, a common pest for pepper plants. Cucumbers (Cucumis sativus): Oregano’s ground-covering habit reduces soil moisture loss for cucumbers.
Marigolds (Tagetes spp.): These flowers repel nematodes and attract pollinators, benefiting oregano. Lavender (Lavandula angustifolia): Both plants thrive in dry conditions and deter deer and rabbits. Nasturtiums (Tropaeolum majus): Their bright flowers attract predatory insects that control oregano pests.
While oregano is versatile, some plants are poor companions: Mint (Mentha spp.): Mint’s aggressive spreading can overwhelm oregano. Parsley (Petroselinum crispum): Prefers moist soil, conflicting with oregano’s dry conditions. Fennel (Foeniculum vulgare): Releases chemicals that inhibit oregano’s growth.
Spacing: Plant oregano 12–18 inches apart to allow airflow and prevent overcrowding. Sunlight: Ensure all companions receive at least 6 hours of sunlight daily. Watering: Water deeply but infrequently to mimic oregano’s Mediterranean origins.
