At first I thought the hibiscus was getting larger because it is now the third summer, but now am thinking some other plant is growing in this large pot. It is a furry green stalk, now about 6 ft. tall. It has very large heart-shaped leaves, and has tiny yellow blossoms. The leaves on on a very long, 8 -10 inch stem. I do not have any other plants that look similar in my yard.