Hummingbirds follow flowering plants into bloom. You will witness a wider range of birds the more varieties you plant. Planting more plants and arranging them in groups will also have an effect.
Here are some recommended enhancements to your garden if you don't typically see many hummingbirds to prepare it for those little wings:
Incorporate perennials such as canna, carpet bells, four o'clock, lantana, penstemon, phlox, slavia, dianthus, verbena, blazing star, and cardinal flower into your landscape.
providing a wildlife-friendly garden, make sure to include plenty of native trees, shrubs, and climbers providing shade to combat the heat, as well as nectar plants and insect attractants that bloom for as long as possible.