Rose of Sharon Hibiscus Tree?

[Lindavald]

I have a 2 foot tall hibiscus tree. How many feet will it grow each year? I ordered this online and received it earlier this week. It's alive, perky and well. This is a potted indoor plant under plant lights. How fast will it grow? Thanks!!

[pklongbeach]

I love gardening. I am not familiar with "indoor" Hibiscus plants.
They are very popular in Calif. but not indoors.
Normal growing habits would be about 3 - 4 feet per growing season until it is full grown.
But an indoor variety without the soil to grow wild would be a very different story. with plenty of water and "food", maybe 12 in. in a growing season.