ULMUS GLABRA – ELM, WYCH
Grows fast but not usually recommended for landscape planting. Small twigs regularly break from the tree and litter the ground below the canopy. Elms are among those susceptible to summer branch drop according to surveys in California. Summer branch drop is a phenomena resulting in failure and breakage of large diameter, live branches typically on calm summer days.
The wood is considered ring porous which means that there is a large difference in size between the spring wood pores and the summer wood pores. All elms reportedly produce allergenic pollen.