Garden Scheme
Thymus citriodorus
Lemon thyme is a low, mat-forming evergreen herb that brings a lemon scent to the front edge of sunny planting areas. Reaching about 1 foot tall and 1 1/2 feet wide, it reads as a small-scale ground layer rather than a vertical accent. Its early- to midsummer flowers also add a pollinator-friendly moment without changing the bed’s low profile.
Space Lemon Thyme 12 inches apart, measured center to center (30 cm).
The mature spread is about 18 inches (45 cm), so plants set at that distance grow together into a closed canopy over the bed.
Treat 12 inches as a planning baseline — cultivar and local growing conditions shift the final footprint.
Place lemon thyme along the outside edge of an herb bed, beside a rock garden, or in pockets near paving where its compact form can soften a hard boundary. Keep it close enough to a path or patio for easy picking from late spring into early fall, but avoid making it the only walking surface.
Set plants 1 foot apart, center to center, for a close, continuous planting. Each plant can reach about 1 1/2 feet wide, so neighboring clumps will meet and may lightly overlap as they mature. In a mixed border, reserve a band at least 1 1/2 feet deep and keep a reachable edge beside it for clipping and harvest. Use fewer plants and wider open pockets where individual mounds should remain distinct.
Give lemon thyme a full-sun position with lean, well-drained soil and modest irrigation once established. It suits gravelly, rocky, or raised edges where water drains promptly rather than collecting around the roots. Group it with other low-water plants instead of placing it at the low, wet end of a bed or beside regularly soaked containers.[1][2]
The evergreen foliage keeps the planting present through much of the year, especially where winters are mild. Early- to midsummer bloom briefly lifts the mat with small flowers, while the main harvest window runs from late spring through early fall. Leave enough open space around the clump for periodic trimming so the edge stays neat and accessible after flowering.
Avoid sites that remain moist after rain or receive frequent overhead watering. Poor drainage can lead to root rot, so a raised pocket, gritty soil, or the upper shoulder of a sloped bed is more dependable than a damp border low point. Trim after flowering or when stems extend beyond their allotted edge to keep the plant compact.[1][2]