Ulmus glabra — an easy houseplant, prefers full sun light
SPECIMEN · FROM THE LIBRARY
Ulmus glabra

Ulmus Glabra

Updated · 6,462 observations
Photo · (c) pluralzed, some rights reserved (CC BY-NC-SA) COURTESY INATURALIST
ON THIS PLANT

Ulmus glabra, commonly known as Wych Elm or Scotch Elm, is a deciduous tree native to Europe and western Asia. It can grow up to 40 meters tall and features a broad, spreading crown with a thick trunk. The tree’s bark is dark gray and deeply furrowed.

The leaves of Ulmus glabra are oval-shaped with serrated edges and are dark green in color. In autumn, they turn yellow before falling off the tree. The flowers of this plant appear in early spring, before the leaves. These small clusters of greenish-yellow flowers develop into winged seeds.

Ulmus glabra thrives in moist soils but can tolerate dry conditions once established. It grows well in both full sun and partial shade. This tree is often used as an ornamental shade tree or in hedgerows.

The wood of Ulmus glabra has been valued for furniture making due to its strength and durability. Additionally, its bark has been used for tanning leather. However, the species has been significantly affected by Dutch elm disease, which causes wilting of leaves and ultimately death. As a result, it is no longer recommended for planting due to its susceptibility to this disease.

Despite its vulnerability to Dutch elm disease, Ulmus glabra remains ecologically important. It provides habitat for various insects, such as moths that feed on its foliage, and serves as a food source for birds that prey on these insects. Thus, it contributes to biodiversity conservation efforts globally, even while grappling with the Dutch elm disease pandemic.

A note from PlantMom

The wych elm is well resistant to disease and, overall, is not prone to illnesses. Regarding care, this species is fairly low-maintenance. When grown outdoors it needs only minimal watering, and larger specimens typically do not require pruning. Smaller plants, however, should be trimmed after they finish blooming. The wych elm is suitable for anyone with an outdoor area, such as a garden or deck, and does not demand much prior care experience.

— PlantMom
CARE GUIDE

How to keep Ulmus Glabra.

Light

The wych elm does best with a plentiful supply of sunlight, though it can tolerate less favorable conditions with only moderate light. It originates from an environment with abundant sun. Too little light can restrict its growth, while too much light can harm the plant.

Water

The wych elm thrives in environments similar to woodlands, where the soil remains consistently moist. It can tolerate moderate drought conditions but should be watered every two weeks to maintain soil moisture, taking care not to over-water and cause waterlogging. As a deciduous tree, the wych elm effectively manages its water reserves in preparation for the leaf-shedding season.

Temperature

Wych elm naturally grows best in temperatures between 5 to 35 ℃ (41 to 95 ℉). The plant favors moderate conditions and can have difficulty when temperatures are very high or very low. During colder periods it may benefit from protections like burlap wraps or mulch placed around the base.

Fertilizer

To encourage healthy development, fertilize your Wych elm in early spring. Regular applications of fertilizer improve overall health, leading to vigorous growth, increased tolerance of harsh conditions, and stronger resistance to diseases and pests. Keep a consistent fertilization schedule for your Wych elm to maintain vibrant, deeply colored foliage and a lush appearance.

Pruning

The wych elm is a resilient deciduous tree known for its wide canopy. Pruning in early spring is beneficial as it removes dead branches, improves air circulation, and allows light to penetrate the tree. Pruning at the right time prevents sap loss and disease, promoting healthy growth and vigor. This practice helps maintain a sturdy and visually appealing structure.

Toxicity

Ulmus glabra has no toxic effects reported.

Further reading →

The toxicity and danger assessments provided are for reference only. We do not assure their accuracy, so it's crucial not to depend on them. Seek professional advice when necessary for accurate guidance.

CHARACTERISTICS

Botanical profile.

Plant Type
Tree
Life Cycle
Perennial
Genus
Ulmus
Family
Ulmaceae
Hardiness Zone
5-9
Mature Height
39.93 m
Mature Spread
14.94 m to 17.98 m
Leaf Color
Green, Yellow
Leaf Type
Deciduous
Flower Color
Red, Brown, Green
Flower Size
2.54 cm
Bloom Time
Early spring, Mid spring
Planting Time
Spring, Autumn
Harvest Time
Late spring, Early summer, Mid summer
Native Area
Turkey, Sweden, Austria, Slovakia, Montenegro, Slovenia, Croatia, Belarus, Uzbekistan, Russia, Germany, Estonia, Romania, Latvia, Belgium, Moldova, Netherlands, France, Tajikistan, Czech Republic, Cyprus, Bulgaria, Poland, Armenia, Greece, Ukraine, Serbia, Lithuania, Norway, Syria, Italy, Spain, Switzerland, Denmark, Finland, Iran, Albania, Ireland, United Kingdom, Hungary, Azerbaijan
ALSO KNOWN AS

Other names.

en Wych elm en Mountain Elm en Scotch elm en Scottish elm en European mountain elm en Broadleaf elm en Broad-leaved Elm en Camperdown Elm en Golden Elm en American Hawthorne en Guoba en Scot's Elm en Leamhán Sléibhe en Skov-elm en Jalakas ar ملچ ar ملج یا نارون کوتاه el Φτελιά (Ftelia) (GR) (EL) ru Планински бряст.
FREQUENTLY ASKED

Reader questions.

How should I water my Wych elm tree to keep it healthy?

To ensure excellent root development, place a garden hose at the base of the plant. Avoid spraying the leaves directly, but if they're outdoors in direct sunlight, they may need more watering. You can also use bubblers or soaker hoses to moisten the roots. When adding or removing plants, use soaker hoses to deeply water the entire garden or bed. After watering, drain any excess water and let the soil dry before watering again. Water at ground level to prevent diseases. On sunny days, consider spraying the entire bush with water. Remember, whether potted or in-ground, Wych elm prefers deep watering rather than light sprinkling.

Why is it important to put fertilizer on my Wych elm plant?

If you own a Wych elm, regular fertilization is important for its overall health. Providing the right nutrients will promote stronger growth and help the tree withstand challenging conditions, as well as resist diseases and pests. The Wych elm's foliage is one of its most appealing characteristics, so it's crucial to maintain it. This involves following a fertilization schedule tailored to your Wych elm, resulting in vibrant, richly colored leaves and an overall lush appearance.

What are the sunlight requirements for Wych Elm?

Wych elm requires a generous amount of sunlight to flourish, thriving best in environments with rich solar exposure. It is adaptable and can endure moderate sunlight conditions, but for optimal growth, positioning it to receive full sun, which is above 6 hours of sunlight, is ideal. Partial sun, about 3 to 6 hours of sunlight, is also acceptable. Observing how sunlight moves through your garden will help in choosing spots that provide a balance of light and shade, ensuring the plant's happiness and health.

What is the ideal growth environment for Wych Elm (Ulmus glabra)?

The Wych Elm thrives in a temperature range of 5 to 35°C (41 to 95°F), preferring mild temperatures and potentially struggling in extreme heat or cold. Although it possesses strong cold resistance, extra precautions like burlap wraps or mulching may benefit it in colder seasons. For winters expected to dip below -25°C, protecting the plant with non-woven fabric or cloth wraps around the trunk and branches is advisable. It's also recommended to water the plant abundantly before the first freeze in autumn to ensure the soil remains moist and prevents drought and water scarcity during winter and early spring.

What should I do if I give too much or too little water to the Wych elm?

An overwatered Wych elm can exhibit a number of symptoms, including yellowing, dropping, and wilting leaves. The plant may also appear dull and unhealthy, with mushy stems. If these signs start to show, it's important to adjust your watering schedule accordingly. Wilting can also indicate under watering, in which case the leaves may become crispy and dry. In situations where the soil is dry and regular watering is not enough, a thorough watering is necessary. Adequate water will help the Wych elm recover, but the plant may still have yellow and dry leaves for a few days due to damage to the root system. Once the plant returns to normal, the yellowing of the leaves will cease. When keeping a Wych elm indoors, always monitor the moisture levels in the pot and avoid overwatering. Look out for black spots, as they indicate excessive moisture. If such spots are present, allow the soil to dry by refraining from watering for a few days. Overwatering can lead to root rot, so if you notice discolored and slimy roots, consider transferring the plant to a different pot. It is crucial to prevent root rot and avoid excessively soggy soil. When planting a Wych elm outdoors, ensure that the soil is adequately moist. If the soil feels too dry when you check with your fingers, it may indicate under watering. In such cases, providing sufficient water is necessary to help the plant recover.

When should I put fertilizer on my Wych elm?

To promote healthy growth, it is recommended to fertilize your Wych elm during late winter or early spring. This provides the necessary nutrients for the tree to thrive when the weather becomes warmer. In warm climate regions, an additional fertilizer feeding during early fall can be beneficial. This not only adds nutrients for the following growing season but also helps the tree withstand the cold winter and prevent foliage damage. Early fertilization ensures that new branches have ample time to grow and withstand the harsh winter conditions.

How does artificial lighting assist in the growth of indoor Wych Elm plants?

Artificial lighting is essential for Wych Elm plants kept indoors, especially in areas with insufficient natural sunlight, like during winter or in less sunny spaces. This supplemental lighting promotes faster, healthier growth. LED lights are favored for their ability to mimic the specific wavelengths of light that plants need. Full sun plants require 30-50W/sq ft, partial sun plants 20-30W/sq ft, and full shade plants 10-20W/sq ft of artificial light. The light source should be placed 12-36 inches above the plant, mimicking natural sunlight's distance, and kept on for 8-12 hours per day to replicate natural daylight hours.

How does low temperature affect Wych Elm, and what are the solutions?

Wych Elm is cold-tolerant and is best kept in temperatures above 5°C. In winter, temperatures should remain above -20°C. If temperatures fall below -25°C, the plant may not show immediate damage, but come spring, the branches might become brittle and dry, failing to produce new shoots. The solution for this is to prune away any dead branches that haven't produced new leaves come spring.

How frequently should I give water to my Wych elm tree?

The Wych elm prefers deep and infrequent watering, especially if it is planted in pots. When watering, soak them in a gallon of water each time. Potted plants have limited water storage, so the soil dries out faster. In a cold region, water is needed every 3 to 5 days. Water early in the morning when the soil is dry. Check the soil moisture by feeling the top 2-3 inches of soil. If it's dry, give the plant a full watering. On hot days, check the moisture daily as the pot's soil can quickly dry out. For gardens, irrigation is necessary. In a hot climate, water once a week. Only water when the top 2-3 inches of soil is dry. Take into account rainwater and avoid overwatering to prevent root rot. Wych elm grows during spring and fall. Outdoor plants benefit from 3 to 4 inches of mulch to conserve water. Sandy soil drains faster, so water more frequently. Clay soil requires less frequent watering, allowing for 2-3 days of dry time. Mark the watering dates on a calendar and watch for drooping leaves as a sign that watering may be needed.

When is the best time to not put fertilizer on my Wych elm tree?

Avoid fertilizing your Wych elm during certain times of the year. Firstly, during the early and mid-winter months when the tree is dormant and does not require feeding. Additionally, it is not recommended to fertilize during the late spring and summer when the weather is hotter and drier. These conditions can negatively affect the tree's response to fertilization. To prevent any issues, stick to a fertilization schedule that involves feeding only in early spring and early fall.

What are the symptoms of light deficiency in Wych Elm?

Wych Elm shows several symptoms when exposed to suboptimal lighting conditions. These include smaller than usual new leaves, leggy or sparse growth due to longer spaces between leaves or stems, faster leaf drop as a conservation mechanism, and halted or significantly slower new growth. Leaves may also develop a lighter color or uneven patterns indicating insufficient chlorophyll. Excessive sunlight exposure can lead to chlorosis, where leaves lose their green color, sunscald marked by pale or necrotic plant tissue, leaf curling as a defense mechanism against water loss, wilting due to loss of turgor pressure, and leaf scorching characterized by brown, dry edges on leaves.

How does high temperature affect Wych Elm, and what are the remedies?

During the summer, it's important to keep Wych Elm below 35°C. If temperatures exceed 38°C, the plant’s leaves may lighten, the tips may dry and wither, and it may become more susceptible to sunburn. To remedy this, trim away sunburned and dried parts, relocate the plant to a shaded area or employ a shade cloth to protect it from midday and afternoon sun. Additionally, watering the plant in the morning and evening can help keep the soil appropriately moist.

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