What makes a plant invasive? Generally, it is a plant that is non-native or alien to that ecosystem, spreading faster than native species, and causing harm to that ecosystem. There is a need to contain and eradicate these pests. Plants are an integral piece of the food web, supporting and connecting all organisms on this planet. Without them most animal species would die. However, because these plants in the wrong place they undermine the local ecosystem, disrupt wildfire regimes, extirpate native plants and animals, and cause major economic loss. According to a 2008 survey taken by the California Invasive Plant Council and the non-profit, Sustainable Conservation, between private entities and public agencies, $82 million is spent on invasive plant control each year.