Caucasian nettle tree Plant Care

Caucasian nettle tree (Celtis caucasica) belongs to the Cannabaceae family within the Celtis genus. Caucasian nettle tree is native to the Caucasus region, Central Asia, and on to the western Himalaya. Caucasian nettle tree is also known as Caucasian hackberry.

Caucasian nettle tree displays a medium to large deciduous tree growth habit, reaching up to 50 ft tall with a spread of approximately 30 ft. Caucasian nettle tree produces inconspicuous small greenish flowers.

Leaf size: approximately 6 inches.

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

Caucasian nettle tree thrives in full sun to partial shade.

Celtis caucasica tolerates temperatures of 50–90°F. Caucasian nettle tree prefers humidity levels of 40–70%.

Well-draining loamy soil with added compost for nutrients. Good drainage is essential for Caucasian nettle tree to prevent waterlogging, which leads to root rot and fungal issues.

Feed Caucasian nettle tree every 8 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established trees 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 loamy soil with added compost for nutrients. Avoid low spots where water collects after rain.

Caucasian nettle tree is suited to USDA Zone 5a – 9b.

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

Caucasian nettle tree can spread to about 30 ft (9.1 m) and reach about 50 ft (15 m) tall. Space plants about 30 ft (9.1 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 tree spacing calculator.

Prune Caucasian nettle tree 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 tree in one year.

Caucasian nettle tree is hardy down to USDA zone 5a, 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 trees need extra protection: roots in a pot freeze much more easily than roots in the ground.

Caucasian nettle tree can be propagated through seeds, hardwood cuttings. Similar propagation techniques also apply to african sugarberry plant care, which shares the same genus.

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

Caucasian nettle tree is susceptible to aphids, scale insects, caterpillars. 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.

Caucasian nettle tree grows outdoors in USDA Zone 5a – 9b. It survives winters down to planting zone 5a. Caucasian nettle tree is native to the Caucasus region, Central Asia, and on to the western Himalaya.