Flora Non Grata

Ice plant is not something to be mentioned in polite California company. Environmentalists and native plant advocates agree, this non-native interloper causes big problems in many natural areas. It forms nearly impenetrable mats that dominate resources; has invaded native habitats; competes directly with threatened or endangered plant species for nutrients, water, light, and space; suppresses the growth of both native seedlings and mature native shrubs; can lower soil pH in loamy sand; change the root system morphology of at least two native shrub species... in other words, does not play well with others.

And yet... kind of pretty, huh?