Identifying blooming trees found growing in Indiana is not as difficult as it seems. First and foremost, you need to reference tree species that grow in Indiana's climate. The state is categorized as USDA Zone 5 to 6, which indicates a plant hardiness down to about -15 to -10 degrees Fahrenheit. After you've narrowed down the tree species that can grow in these zones and that flower, you can study the tree's flower color and pattern, fruit, leaves, height and growth rate, and overall shape and formation to identify the blooming tree.
Study the color of the flowers on the tree to narrow down the tree species. Blooming trees in Indiana have red, pink, lavender, purple, yellow and white flowers. The flowers may be large or small, growing singularly or in clusters.
Look at the fruits the tree produces to identify its species. Does the tree produce a large fruit or small berry-like fruits? Notice the color, size and shape of the fruits to help to identify the tree.
Look for the leaves' color changes in autumn. If your tree's leaves turn bright yellow in the fall, you likely have a Ginko or golden raintree tree. If the foliage turns red, you could have a pink or red dogwood tree, and if the foliage turns purple, you have a Newport flowering plum tree.
Study the tree's height and growth rate to identify it. Smaller trees found in Indiana, such as the flowering almond, knockout rose and double-pink rose, grow to only 4 feet tall, while the Royal Empress can grow up to 12 feet in height each year, and the tulip popular and Ginko trees can reach up to 70 feet tall at maturity. The Jane magnolia reaches 10 to 15 feet, while the sweetbay magnolia can grow up to 50 feet tall. All other Indiana blooming trees grow to a mature height of about 20 to 30 feet.
Identify the tree by its overall shape and formation. For example, some blooming trees in Indiana have a more uniform, rounded shape, like the golden raintree, Cleveland pear tree and Newport flowering plum. Some trees grow closer to the ground, such as the Jane and sweetbay magnolias; the Robinson, profusion and Siberian crabapples; and the autumn and Kwanzan cherries.