Interesting observation

[Dan92119]

I haven’t noticed this before because until recently I had only had Chinese elms. This year I grew from seed American elms. I have three elms in a grow bed all within 12 in of each other, one Chinese elm and two American elms. The American elms get chewed up by bugs, grasshopper and some type of green worm. Nothing touches my Chinese elms. The spiders will use the Chinese elms for their webs.

Has anyone else noticed this? Just curious.
Thanks!

 

[TN_Jim]

my thoughts, just thoughts..grain of salt...
wondering if it has something to do with the Chinese elm being discovered and cultivated to be a very resilient species...a very sorta naturalized plant horticulturally

whereabouts American elm is not native to the west, did not evolve natural defenses to the critters of the west?

Is U. americana a common bonsai species in CA??

I’m really on this
E vs. W train now



615.
Virginia tech dendology site is so good. Like

 

[peterbone]

Non native plants will often have very few pests that will feed on them. Most pests are specialised to native species. It's why Asian trees such as Callery Pear were originally planted so much in US towns.