Late-flowering sage Plant Care

Late-flowering sage (Salvia serotina) belongs to the Lamiaceae family within the Salvia genus. Late-flowering sage is native to Florida, Bermuda, the West Indies, and Mexico south through Panama, growing on moist ground and as a weed in cultivated fields. Late-flowering sage is also known as Mountain sage.

Late-flowering sage displays an upright, bushy shrub growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Late-flowering sage produces colorful spikes of tubular flowers in shades of blue, purple, pink, or red.

Leaf size: approximately 4 inches.

Water a young or newly planted Late-flowering sage every 7–14 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established shrubs mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.

Late-flowering sage thrives in full sun to partial shade.

Salvia serotina tolerates temperatures of 50–90°F. Late-flowering sage prefers humidity levels of 40–70%.

Well-draining sandy loam with added perlite for improved drainage. Good drainage is essential for Late-flowering sage to prevent waterlogging, which leads to root rot and fungal issues.

Feed Late-flowering sage every 6 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established shrubs in good soil often need little extra feeding, so let weak growth or pale foliage guide you.

Stop feeding by late summer so new growth can harden before winter.

The PlantoScan app can remind you when to water and when to fertilize each plant.

Choose a spot with full sun to partial shade and well-draining sandy loam with added perlite for improved drainage. Avoid low spots where water collects after rain.

Late-flowering sage is suited to USDA Zone 10a – 11b.

Plant container-grown or balled-and-burlapped shrubs in spring or early autumn, setting the root flare at soil level, and water well after planting.

Late-flowering sage can spread to about 2 ft (0.6 m) and reach about 3 ft (1 m) tall. Space plants about 2 ft (0.6 m) apart so mature crowns don't crowd each other, and plant at least half that distance from buildings, fences and paths.

Planning a row or hedge? Try the plant spacing calculator.

Prune Late-flowering sage while it is dormant in late winter: first remove dead, damaged and crossing branches, then thin lightly for shape.

If it flowers in spring, prune right after flowering instead so you don't remove next year's buds. Never take off more than about a quarter of the shrub in one year.

Late-flowering sage is frost-tender (hardy to USDA zone 10). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

Late-flowering sage can be propagated through seeds, stem cuttings. Similar propagation techniques also apply to sage plant plant care, which shares the same genus.

See all plants toxic to cats and plants toxic to dogs.

Late-flowering sage is susceptible to aphids, spider mites, whiteflies. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.

Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.

Late-flowering sage grows outdoors in USDA Zone 10a – 11b. It survives winters down to planting zone 10a. Late-flowering sage is native to Florida, Bermuda, the West Indies, and Mexico south through Panama, growing on moist ground and as a weed in cultivated fields. In cooler regions, grow Late-flowering sage as a houseplant or bring it indoors before the first frost.