Invasive Plants

The Hopkinton Garden Club takes pride in promoting the replacement of non-native invasive plant species with native plants.  Many of these invasive (native and non-native) plants are hard to eradicate because they lack the native natural enemies that keep the plant in check in its native environment. 

The Massachusetts Invasive Plant Advisory Group maintains a list of plants that local nurseries are forbidden to sell. 

Link to invasive plant list.

Here are some of the more invasive plants in our region.  

Oriental Bittersweet  (Celastrus orbiculatus)

This aggressive vine chokes and eventually kills the plants and trees it climbs upon.  Please use artificial berry sprays in your fall decor.

Garlic Mustard  (Alliaria petiolata)

Garlic mustard is a biennial meaning that it has a two year life cycle.  The first year plants are low, the second year plant is 24-36" high.  Triangular leaves with white flowers, it is extremely aggressive sending out as many as 8,000 seeds per plant!


         Burning Bush  (Euonymus alatus)

This favorite of landscapers is still found in many local garden stores.  The seeds of this plant are spread by bird droppings.  It's aggressive growth pattern has overtaken native wildflowers.

Substitute Virginia Sweetspire (itea virginica)  or Fothergilla gardenii  for equally inspiring fall color.


Creeping Jenny (Lysimachia nummularia)

This spreading vine propagates rapidly spreading into protected wetland areas and overtaking wetland plants that are home to native birds.
Sold in flats as an "easy groundcover" it's nearly impossible to get rid of once rooted.