Why PlantWise Gardening is Important
Escaped horticultural plants (including garden, pond and aquarium plants) can have serious impacts on biological diversity in wild habitats, and resource quality in cultivated fields.
Did you know that some common wildflowers are considered contaminants in grain, and can dramatically reduce the quality of pasture fields?
- Two examples are scentless chamomile (Tripleurospermum inodorum) and oxeye daisy (Leucanthemum vulgare). Although admired in the wild for their striking, white daisy flowers, theses plants can cause serious economic losses in agricultural fields.
Did you know that ornamental plants may act as hosts to agricultural pests?
- For example, barberry, a group of deciduous, flowering shrubs (Berberis species) can host a problematic fungal infection in wheat. For that reason, the Plant Protection Regulation prohibits any movement of barberry plants in Canada.
Did you know that wildflower seed mixes often include plants that are invasive?
- For example, butter and eggs (also known as yellow toadflax; Linaria vulgaris) is invasive but is also commonly distributed in seed mixes. However, like many “good” groundcovers, toadflax plants spread easily and have become a serious problem in agricultural fields.
Did you know that plants may escape out of your garden (via seeds or stems) into natural habitats where they may compete with native species for resources?
- For example, periwinkle (Vinca minor), a low maintenance hence popular ground cover, is well documented to have spread into forests where its abundance has serious effects on forest floor ecology.
Plant wise choices will reduce the impact and escape of invasive species from gardens and landscapes. This website is designed to help everyone learn about the most important invasive species from across Canada and commonly used in horticulture or traded among gardening enthusiasts.