Downtown Houston boasts a variety of flowers that contribute to the city's vibrant atmosphere. Some common flowers you might find in Downtown Houston include:

1. Azaleas: These colorful flowering shrubs are popular in Houston and can be found blooming in various shades of pink, red, and white, especially during the spring months.
2. Bougainvillea: Known for its vibrant, paper-like flowers, bougainvillea adds a splash of color to many landscapes in Downtown Houston, particularly in sunny areas.
3. Crape Myrtle: These trees are prized for their clusters of delicate, crepe-paper-like flowers that bloom in shades of pink, red, purple, and white during the summer months, bringing beauty to Downtown streets and parks.
4. Lantana: With its clusters of small, brightly colored flowers, lantana is a common sight in Downtown Houston's gardens and landscapes. It's a hardy plant that thrives in the city's warm climate.
5. Texas Bluebonnet: While not as prevalent in urban areas, you may still find patches of Texas bluebonnets adorning green spaces in Downtown Houston during the spring, especially in nearby parks and gardens.
6. Daylilies: These hardy perennials produce large, showy flowers that come in a variety of colors and can often be spotted in flower beds and landscaping throughout Downtown.
7. Petunias: Known for their versatility and vibrant colors, petunias are often used in flower beds, hanging baskets, and container gardens throughout Downtown Houston, adding beauty to urban landscapes.

These are just a few examples of the flowers you might encounter while exploring Downtown Houston. The city's diverse landscapes and botanical displays ensure that there's always something blooming to enjoy throughout the year.