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Ulmus rubra
Ulmus rubra
Ulmus rubra
Ulmus rubra

Ulmus rubra

TAXONOMY

FamilyUlmaceae
GenusUlmus
Zone3

ABOUT

Ulmus rubra, commonly known as the Slippery Elm, is a deciduous tree native to eastern North America. It is known for its mucilaginous inner bark, which has been used in traditional medicine. The tree can grow up to 20 meters tall and prefers temperate climates. It has a dormancy period during the winter months.

ALSO KNOWN AS

Slippery Elm
Ulmus americana var. rubra
Ulmus dimidiata
Ulmus fulva
Ulmus pendula
Ulmus pinguis
Ulmus pubescens
Ulmus tridens
Ulmus triserrata

OVERVIEW

WaterMoist
SoilLoamy
LightDirect Bright (6 Hours)
Temperature20° C
Humidity60%
Dormancy3 Months
pH6.5
Pressure1,013 mbar

DETAILS

Care Instructions
Slippery Elm trees require moderate temperatures and should be planted in areas where they can receive direct bright light for at least six hours a day. They thrive in environments with moderate humidity and should be watered regularly to keep the soil partially moist. Pruning is necessary to maintain the tree's shape and health.
Soil
Ulmus rubra prefers well-draining loamy soil that is rich in nutrients. The soil should be kept partially moist but not waterlogged. A slightly acidic to neutral pH is ideal for this tree.
Fertilizer
A balanced fertilizer with an N-P-K ratio of 10-10-10 should be applied during the growing season to support healthy growth. Fertilize the tree once in early spring and again in mid-summer.
Repotting
As a large tree, Ulmus rubra is not typically repotted. Instead, ensure it is planted in a suitable location where it has enough space to grow to its full size.
Propagation
Slippery Elm can be propagated through seeds or cuttings. Seeds should be sown in the spring, while cuttings can be taken in late summer. Ensure the cuttings are kept in a humid environment until they root.
Pruning
Pruning should be done in late winter or early spring before new growth begins. Remove any dead or diseased branches and thin out crowded areas to improve air circulation.
Toxicity
Ulmus rubra is not toxic to pets or humans. However, the inner bark has medicinal properties and should be used with caution.
Additional
Slippery Elm is valued for its medicinal properties, particularly its inner bark, which can be used to soothe sore throats and digestive issues. It is also a valuable tree for wildlife, providing habitat and food for various species.
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How To Grow Ulmus rubra | EarthOne