Red acts like a beacon to Hummingbirds.  The more flowers you have with bright red blossoms, the better.  Start with a mixture of  native blooming plants that bloom early (Columbines) and then throughout the summer until September and October and you'll be blessed with visiting Hummingbirds.

Want more?  Add islands of bright red annuals like old fashioned red Petunias or Salvia (Salvia even does well in desert climates, if watered).  Now is the time to plant a "mass" of such plants.  Having lots of nectar producing flowers = happy hummers.  Another way to attract Hummingbirds is to hang a feeder that is at least partially bright red.

 

It is often forgotten that Hmmingbirds are also carnivores.  In order to get needed proteins, vitamins and minerals, small insects and spiders make up over one fourth of a Hummer's diet.  Also, Hummingbirds use spider webs to hold and bind their nests together and in place on a tree limb.  So, please don't use broad spectrum pesticides that kill all the insects and spiders in your gardens.  You'll be rewarded with many more Hummingbirds (and butterflies).