Please Help Me Identify This Plant.
I was given this plant along with several other perennials. This is the only plant the we could not identify. This is about 3 ft tall, with very tiny whitish flowers. The buds kind of look like white miniature pine cones. When open they are like a miniature mum or zinnia. I was told that it is a perennial. I just want to make sure this is not an invasive weed.