Michigan Restricts Bradford Pear, Other Invasive Plants

The white-flowering Bradford pear trees that brighten yards, roadsides and parking lots each spring are part of a larger species Michigan is now trying to slow down.

The Michigan Commission of Agriculture and Rural Development voted May 20 to add six plants to the state’s invasive species lists, including Callery pear, the species that includes the commonly planted Bradford pear.

The change does not mean homeowners are in trouble for having one of the plants already growing in their yards. According to the state, property owners are not considered in violation if the species are already established on their property or in adjacent waterways.

Instead, the rules are aimed at limiting future spread through sales, distribution and intentional propagation.

The four landscape plants being added to Michigan’s restricted species list are common buckthorn, glossy buckthorn, Callery pear and Japanese barberry. Beginning Jan. 1, 2028, it will be unlawful to introduce, import, sell, possess with intent to distribute or intentionally propagate those species in Michigan.

Two aquatic plants, water hyacinth and water lettuce, were added to the prohibited species list. Those restrictions took effect June 19.

Invasive species are nonnative plants or animals that cause, or are likely to cause, harm to the environment, economy or human health. The Huron River Watershed Council recently highlighted the state action in its June environmental roundup, noting that the six plants can outcompete native species, reduce biodiversity and degrade habitat.

For many homeowners, Bradford pear may be the most familiar name on the list. The tree became popular because of its white spring flowers, compact shape and ability to grow in many conditions.

But Michigan State University Extension says Callery pear has become increasingly invasive in the Midwest and is showing up in places where it was not planted. The tree also has long been criticized by arborists for weak branch structure that can lead to broken limbs after storms.

For residents thinking about replacing a Callery pear or choosing a new small- to medium-sized flowering tree, MSU Extension suggests alternatives such as redbud, crabapple, flowering cherry, magnolia, dogwood and serviceberry. Serviceberry can provide spring flowers, fall color and fruit for wildlife, while redbud grows well through much of Lower Michigan.

The Huron River Watershed Council also encourages residents to consider native plants, shrubs and trees, which can help absorb and filter polluted runoff before it reaches rivers and lakes. Native plants also provide food and shelter for birds, butterflies and other wildlife.

For gardeners, the takeaway is simple: No one needs to panic over an existing plant, but it may be worth looking twice before buying, sharing or planting species now identified as invasive.

Residents planning new landscaping can use native plant lists, local conservation district sales and extension resources to choose plants that are better suited for Michigan yards and waterways.