Water elm (Planera aquatica)

Water elm

Also known as: Common planer

The leaves are 3 to 7 cm long, with a serrated margin. Despite its common English name, this species is not a true elm, although it is a close relative of the elms (species of the genus Ulmus). It is also subject to Dutch elm disease, a disease which affects only members of the Ulmaceae. It is native to most of the southeast United States. It is hardy down to Zone 7.

Scientific classification

Species

Water elm (Planera aquatica)

Roses, elms, figs, and allies

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Spring

Bloom Time

11 m to 22 m

Plant Height

Deciduous

Leaf type

Slow

Growth Rate

Images of Water elm

Attributes of Water elm

Growth Rate

During Spring and Summer, the slow growth rate of water elm results in a gradual increment in size and density of leaves. Despite this sluggish tempo, its steady development ensures durability and resilience. Shrewd observation might detect subtle growth changes, with more vibrant foliage in Spring slowly maturing by Summer's end. This slow speed indeed influences the plant's biological itinerary, postponing flowering and fruiting to late summer.

Quickly Identify Water elm

Distinctive oblong leaves, dark green above and paler beneath, with serrated margins and pronounced veins.

Tiny flowers with curling fuzzy stigmas, lacking prominent petals, blooming in late spring to early summer.

Stalked leathery drupe fruit, about 1/2 inch in size, with fleshy burr-like projections.

Reddish to gray-brown stems, initially hairy and becoming smooth, varying in diameter with a branching pattern.

Distinctive trunk bark with rough texture, grayish-brown color, patchy exfoliations, shedding in irregular patterns.

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Care Guide for Water elm

Every 2-3 weeks

Water

Full sun

Sunlight

Water: Originating from wetlands, water elm prefers consistently moist soil, tolerating brief droughts. Water every 2-3 weeks, allowing slight drying between sessions. Thriving outdoors, water elm benefits from mulching to retain moisture and replicate native conditions.

Fertilize: For 'water elm,' use balanced fertilizers monthly during the growing season, applying high-nitrogen variants in spring and reducing in fall. Follow recommended dosages to prevent over-fertilizing, which can cause root burn. Proper nutrition results in vigorous growth with lush foliage and strong roots.

Pruning: Water elm thrives in wet environments and benefits from early spring pruning before new growth. Remove dead, diseased, and overcrowded branches for better airflow and sunlight. This practice promotes structure, healthy growth, and helps prevent pest and disease issues. Always use clean, sharp tools for precise cuts.

Propagation: Water elm thrives in freshwater and is best propagated through healthy stem cuttings. Submerge cut ends in water, then transfer to rich, moist soil, maintaining consistent moisture. Once established, water elm is resilient and can adapt to varied conditions in its outdoor environment.

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