Matthiola crassifolia Plant Care

Matthiola crassifolia (Matthiola crassifolia) belongs to the Brassicaceae family within the Matthiola genus.

Matthiola crassifolia displays an upright, branching growth habit, reaching up to 1.5 ft tall with a spread of approximately 1 ft. Matthiola crassifolia produces fragrant blooms in various colors like purple, pink, white.

Leaf size: approximately 4 inches.

Water a young or newly planted Matthiola crassifolia every 7–10 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.

Matthiola crassifolia thrives in full sun to partial shade.

Matthiola crassifolia tolerates temperatures of 50–75°F. Matthiola crassifolia prefers humidity levels of 40–60%.

Well-draining sandy loam with added organic matter. Good drainage is essential for Matthiola crassifolia to prevent waterlogging, which leads to root rot and fungal issues.

Feed Matthiola crassifolia 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 organic matter. Avoid low spots where water collects after rain.

Matthiola crassifolia is suited to USDA Zone 12a.

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.

Matthiola crassifolia can spread to about 1 ft (0.3 m) and reach about 2 ft (0 m) tall. Space plants about 1 ft (0.3 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 Matthiola crassifolia 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.

Matthiola crassifolia is frost-tender (hardy to USDA zone 12). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

Matthiola crassifolia can be propagated through seeds. Similar propagation techniques also apply to matthiola afghanica plant care, which shares the same genus.

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

Matthiola crassifolia is susceptible to aphids, cabbage worms, flea beetles. 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.

Matthiola crassifolia grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. In cooler regions, grow Matthiola crassifolia as a houseplant or bring it indoors before the first frost.