elms university of iowa - Poursteady Utilities

Elms for USDA zone 5 and zone 4 - these species should be able to be wintered, outdoors, without temperature protection, pot set on ground, protected from wind & maybe sun, mulching in optional.

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The elms that stayed outside in winter are now pushing new growth and any leaves from last year will slowly (or faster) drop as the new growth comes in. I get this every year on mine.

Here in NC, they drop, but later than just about all my other deciduous. Even today (Dec 5) I'd say only about half of my Chinese elm leaves have fallen off the trees. Compare that to my American elms, winged elms, cedar elms, silver elms, English elms - all of which dropped a month or more ago.

Siberian elms are pretty vigorous trees and like most elms, they can take dramatic root reduction (like 95 percent) at the right time. Also your location dictates what you can do with them right now. If you're in an area that is winter now, working roots, trunk reduction etc. is not in the cards until early spring arrives.

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I’ve got several varieties but have more Siberian Elms than anything else. Not because Siberian elm is some unkept bonsai gem of a tree, but because they are hardy, they respond to EVERYTHING, and they are extremely plentiful here in the 505.

Seiju can also be grown from root cuttings like other elms so whenever you repot save any thicker pieces of root. Seiju is a corky bark variety so will develop thick, black bark with fissures.

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Sourcing a 'Caitlin' Chinese Elm and Comparison to 'Hokkaido' Hi everyone, I'm on the hunt for a 'Caitlin' Chinese elm (Ulmus parvifolia 'Caitlin') but having a really tough time finding a reputable seller in the Midwest United States. 'Hokkaido' elms seem to be everywhere, so I'm curious if...