Native plants evolved in our area, under our climatic conditions, and tend to thrive if given their preferred amount of moisture and sunlight. Of Ohio's 2300 or so vascular plant species, nearly a quarter are non-native, having been introduced to the state after 1750. Of the 500 or so non-native plants a handful are invasive, meaning they readily out-compete other plants in natural areas. Common examples are bush & Japanese honeysuckle (Lonicera maackii & Lonicera japonica), garlic mustard (Alliaria petiolata), multiflora rose (Rosa multiflora) and autumn olive (Elaeagnus umbellata). Ensuring the success of native plants in our landscapes means ensuring habitat for wildlife and the healthy functioning of ecosystems.