Also known as Elm · 407 gardener saves

Ulmus: the varieties gardeners actually grow

Ulmus, the genus most gardeners know as elm. We track 14 varieties; these are the ones gardeners actually save and plant, ranked by real saves rather than catalog marketing. Each links to full care, bloom, and live price data.

14 varietiesZones 4–9Mostly full sun

The 12 most-saved Ulmus varieties

Of 14 in the catalog — ordered by how many gardeners actually grow them.

Browse all 14 Ulmus varieties →

How to grow Ulmus

What the Ulmus varieties in our catalog actually agree on — drawn from the care records of the 14 most-grown of them, not from a generic template.

The Ulmus year

  • PruneJanuary and February100% of varieties

    Prune in late winter to establish good structure and remove dead wood.

  • Check for PestsMay–July93% of varieties

    Monitor for elm leaf beetles and Japanese beetles.

  • FertilizeMarch71% of varieties

    Fertilize young trees in early spring if growth is slow.

  • PlantMarch, September, October and November57% of varieties

    Plant in early spring or fall to allow root establishment.

Do

  • Prune during dormancy to maintain a strong structure.
  • Provide ample space for its large mature size.
  • Water regularly during its first few seasons to establish deep roots.
  • Allow the beautiful bark to develop naturally without interference.
  • Monitor for pests, though it is generally resilient.

Avoid

  • Do not plant in poorly drained or constantly wet soils.
  • Avoid excessive fertilization, which can lead to weak growth.
  • Don't prune major branches during the growing season.
  • Never top the tree; it ruins its natural form.

What goes wrong with Ulmus

ProblemWhat you'll seeWhat to do
Elm Leaf BeetleSkeletonized leaves (lacy appearance) caused by larvae and adults chewing.Release beneficial insects like lacewings. Apply spinosad or carbaryl for heavy infestations.
Japanese BeetleAdults skeletonize leaves, often feeding in groups.Hand-pick beetles in the morning. Use pheromone traps away from the tree. Apply systemic insecticides containing imidacloprid as a soil drench.
AphidsClusters of small insects on new growth; sticky honeydew on leaves.A strong spray of water can dislodge them. Use insecticidal soap or neem oil. Ladybugs are excellent natural predators.
Elm Bark BeetleSmall holes in bark, sawdust-like frass. The beetle itself is a vector for DED.Maintain tree health. Insecticidal trunk sprays can protect high-value trees.
Dutch Elm Disease (DED)Sudden wilting and yellowing of leaves on one or more branches (flagging).'Patriot' has very high resistance and is unlikely to be affected. No cure exists for susceptible elms; prevention is key.
Phloem NecrosisGradual decline, yellowing leaves, butterscotch-colored inner bark with wintergreen smell.No cure. Control leafhopper vectors. Plant resistant cultivars.
CankersSunken, discolored areas on branches or trunk, which may ooze.Prune out infected branches well below the canker. Maintain tree vigor through proper watering and care. There is no chemical cure.

Making more Ulmus

Softwood Cuttings

  1. Take 6-inch cuttings of new growth in late spring.
  2. Wound the base and dip in a rooting hormone.
  3. Stick in a well-drained medium like perlite and peat.
  4. Keep under mist or in a humidity tent; rooting occurs in 8-10 weeks.

Grafting

  1. Take dormant scions from a resistant cultivar in winter.
  2. Graft onto Ulmus americana seedling rootstock.
  3. This is essential to maintain the disease resistance of the cultivar.
  4. Requires specialized horticultural skill.

Ulmus questions

How many types of Ulmus are there?

The Sow catalog tracks 14 distinct Ulmus varieties. The most popular — ranked by 407 real gardener saves — are shown first above.

What zones does Ulmus grow in?

Across its varieties, Ulmus covers USDA Zones 4–9. Individual varieties differ — each plant page lists its exact range, and Sow filters the catalog to your zone automatically.

When does Ulmus bloom?

Most Ulmus varieties bloom in early spring, late summer, late winter. Staggering early, mid, and late varieties extends the genus's season in one bed.

Which Ulmus should I choose?

Start from the most-saved varieties above — popularity across thousands of gardens is a strong signal of reliability — then filter by your zone and sun. In the Sow app you can preview any of them in a photo of your actual yard before you buy.

Keep exploring

Design with Ulmus in your own yard

Snap a photo of your space and see these varieties planted in it — sized correctly, matched to your zone, with care reminders included.

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