Siberian elm

Siberian elm (Ulmus pumila) should be watered when the soil has dried out to about 2 inches. This is usually every 5-7 days. Water deeply, allowing the water to run through completely. Avoid over-watering as this can cause root rot. During the spring and summer months, it may require water twice a week. During mild winters, water once every 2 weeks or less. In hotter, dryer climates, more frequent waterings may be necessary.

Siberian elm (Ulmus pumila) prefers full sunlight throughout most of the day during the spring and summer months. During this period, its leaves should receive about 6-8 hours of direct sunlight each day. It should also have at least some indirect sunlight for the rest of the day. If the Siberian elm is exposed to too much shade, its growth may be stunted and its health compromised. In the fall and winter months, this plant should receive some sunlight, but less than it needs in the spring and summer. About 4-5 hours of direct sunlight each day should be sufficient during these months.

Pruning of Siberian elm (Ulmus pumila) should begin when the tree is young, soon after planting. This will encourage the plant to branch out and form a broader shape. Once the tree has reached 2 to 3 years of age, carefully thin out branches that are growing too close together or that are growing in unappealing directions. This will allow for healthier growth and will improve the overall shape of the tree. The best time to prune a Siberian elm is during the winter-dormant season, typically from late January through mid-March. Avoid pruning during spring months, as pruning causes the tree to put its energy into regenerating new growth instead of finishing the previous season's growth. Annual pruning is recommended to keep the shape and size manageable, and to get rid of any dead or damaged branches.