Garden Scheme
Salvia rosmarinus 'Prostratus'
Prostrate rosemary is a low, trailing evergreen groundcover that brings a woody, spreading line to sunny planting areas. At about 1 foot tall, it stays below most border plants while extending outward to 4 feet wide. Use its aromatic foliage to connect an herb bed with a dry ornamental planting, reserving open ground around it so the cascading habit remains visible rather than being buried by neighboring growth.
Space Prostrate Rosemary 3 ft apart, measured center to center (90 cm).
The mature spread is about 4 ft (1.2 m), so plants set at that distance grow together into a continuous carpet.
Treat 3 ft as a planning baseline — cultivar and local growing conditions shift the final footprint.
Set Salvia rosmarinus 'Prostratus' where its stems can spill over a retaining wall, raised bed edge, slope, or the front of a broad, sunny border. It reads best as a low drape rather than a tight edging strip. Keep it on the bed side of paths, with the eventual spread directed away from walking space, and use it where a permanent evergreen groundcover will not interfere with seasonal replanting.[1][2]
Space plants 3 feet apart, center to center, for a connected planting that can knit into a broad, low cover. Each plant can spread about 4 feet wide, so allow it to overlap open soil or cascade across an edge rather than assigning it a narrow pocket. Along a wall or slope, measure its footprint from the planting line outward and leave the lower landing area clear of smaller plants.
Give prostrate rosemary full sun and excellent drainage from the start. A raised edge, sloping bed, or freely draining wall-side planting keeps its root zone out of prolonged wetness. Once established, it suits low-water areas; avoid placing it beside plants that need frequent irrigation or in a bed designed to hold moisture after rain.[1][3][4]
Its evergreen foliage gives the bed structure through winter in suitable climates, while harvest can continue from spring into fall. Treat the plant as a year-round occupant when planning gaps between perennials and annual crops. Leave its trailing stems accessible from a path or bed edge so harvest does not require stepping into neighboring plantings.
Avoid low pockets, poorly drained clay, and crowded humid corners. Excess water is a common cause of decline, and tight planting with weak air movement can encourage foliar disease. Do not position irrigation heads over the crown; place it where watering can be kept light and where the mature spread will not cover the bases of plants that need regular access.[3][4]