by Larry Hodgson September 27, 2018 1 Gardening Invasive plants Shrubs Trees Trees and Shrubs That Self-sow Excessively The Norway maple (Acer platanoides) produces so many seedlings it can easily become a garden pest. Source: www.massaudubon.org. All plants reproduce.Continue Reading Share this: Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Click to share on LinkedIn (Opens in new window) LinkedIn Click to share on Pinterest (Opens in new window) Pinterest Like this:Like Loading...