The Height of Annual Forget-Me-Nots

True Forget-Me-Not

• According to Brandeis and Wellesley universities, Myosotis Scorpioides is the true forget-me-not plant. True forget-me-not plants are wildflowers that produce light blue blossoms with yellow centers. These flower blossoms grow in circular clusters all along the stalk of the plant. The true forget-me-not can range in height from about 6 inches to nearly 2 feet.

Creeping Forget-Me-Not

• Another plant commonly referred to as a forget-me-not is the creeping forget-me-not, or Omphalodes Verna. Instead of light blue flowers with yellow centers, the creeping forget-me-not blooms with dark blue flowers each spring. The creeping forget-me-not grows in a sprawling pattern, which makes it good for covering the ground, especially in areas where grass may be hard to grow. The maximum height of the creeping forget-me-not is only 8 inches, according to Michigan State University.

Other Plants

• Some plants found in landscapes may be confused with forget-me-nots, though the plants are not actually forget-me-nots at all. Because of the similarity in the coloring and growth pattern of the flowers, the Blue Alkanet plant can be misidentified as the forget-me-not, according to Beth Willis of the University of Tennessee. The two plant species are related, but they're two different plants. One way to identify that a plant is a Blue Alkanet and not a forget-me-not is by height. Blue Alkanet's grow taller than forget-me-nots, commonly reaching heights of 3 to 5 feet.

Where Forget-Me-Nots Grow

• True forget-me-nots grow in nearly all regions of the United States and Canada, including all of southeastern Canada, all of the northeastern U.S., all of the western U.S. and the western coastal provinces of Canada. The growth pattern of true forget-me-nots skips a few random U.S. states and Canadian provinces in the center of the countries, including Oklahoma and Kansas in the U.S. and Alberta in Canada. Forget-me-nots also aren't found in Texas, Florida and South Carolina and in Newfoundland, Canada.