Flora Americae Septentrionalis Plant Care

Flora Americae Septentrionalis (Artemisia cana subsp. bolanderi) belongs to the Asteraceae family within the Artemisia genus. Flora Americae Septentrionalis is native to western and central North America.

Flora Americae Septentrionalis displays an upright, bushy shrub growth habit, reaching up to 2 ft tall with a spread of approximately 3 ft. Flora Americae Septentrionalis produces insignificant small yellow or white flowers.

Leaf size: approximately 2 inches.

Water a young or newly planted Flora Americae Septentrionalis 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.

Flora Americae Septentrionalis thrives in full sun to partial shade.

Artemisia cana subsp. bolanderi tolerates temperatures of 50–75°F. Flora Americae Septentrionalis prefers humidity levels of 30–60%.

Well-draining sandy soil with low fertility. Good drainage is essential for Flora Americae Septentrionalis to prevent waterlogging, which leads to root rot and fungal issues.

Feed Flora Americae Septentrionalis 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 soil with low fertility. Avoid low spots where water collects after rain.

Flora Americae Septentrionalis is suited to USDA Zone 4a – 8b.

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.

Flora Americae Septentrionalis can spread to about 3 ft (0.9 m) and reach about 2 ft (1 m) tall. Space plants about 3 ft (0.9 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 Flora Americae Septentrionalis 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.

Flora Americae Septentrionalis is hardy down to USDA zone 4a, so once established it can stay outdoors through winter in that zone and warmer ones.

Water deeply in late autumn before the ground freezes, and spread a 5–8 cm (2–3 in) layer of mulch over the root zone, keeping it away from the trunk.

Young and container-grown shrubs need extra protection: roots in a pot freeze much more easily than roots in the ground.

Flora Americae Septentrionalis can be propagated through seeds, division. Similar propagation techniques also apply to southernwood plant care, which shares the same genus.

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

Flora Americae Septentrionalis is susceptible to aphids, spider mites. 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.

Flora Americae Septentrionalis grows outdoors in USDA Zone 4a – 8b. It survives winters down to planting zone 4a. Flora Americae Septentrionalis is native to western and central North America.