You really can't go wrong with any of the Agastaches.

Two of my favorites are "Acapulco Salmon & Pink", which the hummingbirds love and has an extremely long bloom time, and Golden Jubilee, which has attractive yellowish leaves and attracts bees and butterflies by the dozens.

When might I expect to see these in the the garden center? I have seen them in gardening magazines and really wanted to add some to my yard, but so far, haven't found them.

I have a number of agastache varieties and like most all of them:

Cotton Candy is already in bloom and will continue until frost.
Salmon & Pink has been a favorite for years.
Blue Fortune is best deadheaded after the first bloom to get a good second round. This is a butterfly magnet!
Purple Haze and Black Adder are similar purples, but don't seem as robust as the Blue Fortune.
Golden Jubilee is pretty until we get into drought, then the bright, light green leaves can get sunburned.
Navajo Sunset is a gorgeous orange, but, like Salmon & Pink and other rupestris (small leaves is a good way to recognize these), may have to be replaced if they get too much water over the winter. Keep these high and dry. All of the wider leaves, such as Cotton Candy, Blue Fortune, Purple Haze, Black Adder and Golden Jubilee can take more water and less sun.

Mich Gardens off Hwy 64, between Pittsboro and Apex has Blue Fortune right now. They are at "Wilsonville."

The place in Sanford that we can't name here usually has a lot of agastache.

Southern States usually carries several varieties, but I've not been by there yet this spring.

Big Box garden centers tend to wait until plants are blooming to sell them. It's early for most agastache, except Cotton Candy.

Agastache are reliably deer and rabbit resistant in my garden. Great plants, IMHO.

Cameron

old fashioned rupestris, with the tiny leaves and wispy stems. Beautiful sunset colors on wispy stems. The others with wide leaves reseed everywhere too much for me.