If you have a lot of different plants that hummers like, they will still come to your garden, even if they're not massed. I have one plant of agastache on my deck table and the hummers come to it all day long.

The only plant I have "massed" for hummers is bee balm. 3'x3' is a mass in my small garden. The birds love it.

Thanks Susan. I've got that much Bee Balm finally this year. Maybe that will help. And thanks for mentioning the Agastache. I just looked up info on that today! My big goal is to finally get those pesky little Hummers to come to my yard. I had them at a previous home, and miss them!