Here’s a plant community that tends to work more often than not on sunny, dry clay sites around homes (50% sun is good, too, especially on a western exposure):
 

• Baptisia minor
• Heuchera richardsonii
• Echinacea pallida
• Callirhoe involucrata
  
• Liatris aspera
• Symphyotrichum oblongifolium
• Schizachyrium scoparium
• Bouteloua curtipendula

 
There are many reasons these plants work well together, from human aesthetic concerns to filling ecological niches and layers. The grasses, mallow, and alumroot all work as a ground cover or green mulch. The forbs serve as seasonal color and resources for pollinators of various species. There’s different texture, structure, and height for humans to enjoy. Many of the plants look good in winter. Some plants have fibrous root zones, some are tap rooted, and others have corms -- this mixing ensures plants don’t always compete at the same levels for nutrients, but also helps stem erosion and rainfall absorption as the soil layers are amended. Well, I could REALLY go on about all of this, but that’s for another time. If you crave more specifics please ask away.

Ultimately, the above plants are fairly low worry, adaptable, and thrive with loving neglect. You still have to "garden" of course -- weeding, thinning, replacing, cutting back in spring, etc -- but the above short list does tend to be fairly reliable.

I can’t remember the last summer when I had to clean off my windshield with a squeegee at the gas station. It seems like a decade since I had to make an emergency pit stop, making the seven hour drive to my folks two states away every July 4, to clean bug guts off the front of my car. Perhaps worse, as an avid gardener with over 5,000 square feet of lush beds filled with dozens of flower varieties, I’ve noticed a steady decline in buzzing visitors — especially since 2012 when my area received roughly half an inch of rain over the summer.
Undoubtedly, you’ve seen the articles about monarch butterfly populations dropping and the insect apocalypse, and maybe you’ve added more blooms to whatever small spit of land you have. While the issues we face are much larger than what’s happening in our urban and suburban gardens, the insect die off starts with the cultural mentality of human supremacism made evident just on your drive to work or the grocery store.

Every city looks pretty much the same. We start our day in homes where lawn makes up the vast majority of landscaping, then make our way past businesses and schools and churches where lawn makes up the vast majority of landscaping. And snug tight against the walls of most structures is a thin line of defense — scattered shrubs and a few flowers marooned in unnatural oceans of wood mulch. If you were a pollinator all of this habitat would be useless. It fact, it’d be lethal — there’s almost no source of food or a place to raise your young.
Humans are superb colonizers — we’ve made urban landscapes efficient for our uses. But we’ve left out the nature that pollinators need, and without pollinators we’d soon find ourselves without blueberries, squash, melons, apples, oranges, strawberries, almonds, and a seemingly unending list of food. We’d also find ourselves without many flowers we enjoy in parks or right out the front door.

There are some 4,000 species of native bee in the U.S. and a significant portion are specialists who time their emergence from nests to coincide with the bloom appearance of specific flowers. These bees forage for pollen from native plants they evolved with over millennia, caching egg-filled holes in the ground or in old wood with pollen for their future progeny. Without specialist bees — who depend on specific plants just as those plants depend on these specific bees to reproduce — ecosystems begin to falter. As flowers don’t receive pollination they set less seed, and entire fields lose diversity and gaps open up, potentially paving the way for invasive weeds to move in or for less beneficial flowers to take over.

The case of bees is only one example of tens of thousands of insects that invisibly swarm our world. We know of monarchs — how they require milkweed since their caterpillars can only eat this one plant. As farm fields have grown and as prairie has been plowed away, milkweed and the grassland habitat monarchs and a plethora of other insects rely on has helped clean up our windshields but also starved the environment.
Just take songbirds. While their young are in the nest for roughly two weeks the parents are feeding the chicks a steady diet of spiders, beetles, moths, butterflies, bees, caterpillars, and more. Some bird species may require hundreds of insects a day while they are growing up. If you haven’t noticed, our cities are becoming quieter — the spring songs once so loud and diverse just a decade or two ago have become muted and more subtle.

What do home gardens or business landscapes have to do with any of this? In a time when wildlife is vanishing in perceptible fashion every spit of land matters, just as every plant matters. Native plants support many times more insect biomass than exotic plants imported from Asia or Europe because native plants have a shared evolutionary history with insects and other wildlife. Further, when we use lawn as default landscape mode we might as well be paving over everything with asphalt, because lawn has no flowers — and it certainly has no shrubs or small trees which create hedgerows, perhaps some of the best bee nesting habitat around.

In my neighborhood front yards are small and most families kick a ball around in the back, so that front lawn goes unused. Every week someone mows it down, making sure not a dandelion blooms or a milkweed takes root. What if we took even half of these small spaces and made our garden beds twice as large? What if we had drifts of short meadow flowers and grasses? What if instead of street after street of monochrome flat green, we created networks of wildlife refuges, islands of habitat and freeways of food and shelter? Our smallest native bees can travel only a few blocks before needing to refuel on nectar — and where can they find it when the landscape is lawn or hosta or wood mulch?

If we can’t provide for the nature that literally sustains us at home, how can we ever hope to steward that nature beyond our front door into parks and farm fields and marshes and deserts and forests and prairies? Our urban gardens matter — maybe not because they can prevent an “insectageddon,” but because our gardens reflect what we think of our natural world and how we see ourselves either as a part of the wild web, or as a near-sighted species who lacks compassion for the smallest among us.

My son is six months old and every day I think about the world I’m giving to him. While he’s smiling at me, rattle in hand, I’m apologizing to him in words he can’t yet understand but that, unfortunately, he will one day comprehend in more ways than my heart can bear. But soon enough we’ll walk the garden and identify as many insects as we can, learning about the plants they need for pollen or to lay their eggs upon. We’ll plant the flowers. We’ll listen to whatever birds we can, naming them and singing back. We’ll understand together that conservation, compassion, activism, and faith begin at home and quickly spill out on the backs and legs of insects making their way home, too. We choose the world we want to live in, and for better or worse, each choice affects every other human and non human life around us. I don’t know about you, but as much as my heart breaks under that sense of responsibility, it also feels amazingly liberating and empowering — especially when I’m down on my knees watching a butterfly dance around the center of an aster bloom.