Thymus × citriodorus ‘Lime’ is the free plant for the Autumn 2025 plant fair.

Thymus × citriodorus ‘Lime’, commonly known as Lime Thyme, is a fragrant evergreen perennial herb prized for its distinctive citrus aroma and vibrant foliage. A hybrid within the mint family (Lamiaceae), it’s thought to have originated from crosses between common thyme (Thymus vulgaris) and lemon thyme (Thymus pulegioides), combining the culinary versatility of thyme with a refreshing lime scent. Its compact growth habit and ornamental appeal make it equally at home in herb gardens, ornamental borders, or container displays.

This variety typically forms a low, spreading mat of small, oval, lime-green leaves, reaching around 6-12″ (15–30 cm) in height with a spread of 9-12″ (25–30 cm). In summer, it produces clusters of tiny pink flowers that attract bees and other pollinators, adding ecological value to its aesthetic charm. The foliage releases its citrusy fragrance when brushed or crushed, making it a delightful choice for planting near paths, patios, or seating areas.

Cultivation is straightforward, provided its Mediterranean origins are respected. Lime Thyme thrives in full sun, ideally with at least six hours of direct light daily, and prefers light, well-drained soil with a neutral to slightly alkaline pH. It tolerates poor soils, heat, and drought once established, but suffers in waterlogged conditions, so amending heavy clay with grit or sand is recommended. Water sparingly, allowing the soil to dry between watering, and avoid over-fertilising, which can reduce flavour intensity. Regular pruning in spring and after flowering helps maintain a dense, bushy habit and prolongs the plant’s productive life.

In the kitchen, Thymus × citriodorus ‘Lime’ offers a zesty twist on traditional thyme, pairing beautifully with fish, poultry, salads, and herbal teas. Harvest sprigs as needed, ideally just before flowering for peak flavour, and dry or freeze for later use.

Suffolk Plant Heritage gives away a free plant, bulb or seeds at our plant fairs as part of its active conservation work. Anyone in Suffolk can grow little known but worthwhile garden plants and help secure their survival for the future. Wide distribution of a plant is the best form of conservation.Suffolk Plant Heritage runs plant propagation workshops and sells unusual plants at various events.