> Anything that flowers produces pollen right - so hmm. Technically, that may be right but is beyond the point. Very often, for alien species the local pollina

> Anything that flowers produces pollen right - so hmm. Technically, that may be right but is beyond the point. Very often, for alien species the local pollinators will not recognize the plant as such and thus ignore it. A prime example for this is Forsythia that a lot of people in my area plant because its one of the first flowering trees in the year. However, from an ecological standpoint it is worthless and for some insects even suspected to be toxic. Another problem are breeds where the blossom is filled with extra petals. While this may look nice to us, it makes the pollen and nectar inaccessible to many insects. As they are still drawn to the flower but cannot reach it, its also net negative for those critters.