Non aquatic plants are plants commonly sold at your local pet shop as aquatic plants. These plants will NOT grow in your tank as they are not adapted to. Most of these plants will seem like they grow initially but all of them do indeed stop growing and melt eventually.

Why are they still selling these plants? These plants are actually meant for ripariums. Some stores, however do still advertise these as aquatic plants.

Don't waste your money and don't be fooled! Check out our list of non-aquatic plants commonly sold as aquatic plants (with pictures):
http://www.apsa.co.za/xenforo/threads/plants-commonly-sold-as-aquatic-that-arent.3378/