There are a number of these in the open space in our neighborhood in Colorado. I’ve never thought about them much until recently when the organization that manages the open space started an initiative to get rid of them:

Russian olive is considered to be an invasive species in many places in the United States because it thrives on poor soil, has high seedling survival rates, matures in a few years, and out-competes the native vegetation. It often invades riparian habitats where the canopy of cottonwood trees has died. Its quick-spreading root system can make it pest-like

https://en.wikipedia.org/wiki/Elaeagnus_angustifolia