Comment by foenix
> My mother was from Utah, and she always lamented at the small size of her flowers growing up in Chicago. They are much larger in Utah because they can get big without insects eating them.
Counter-anecdote from a Utah local: every time we travel to a "wet" area (any travel but Arizona / Nevada) we always find the climate to be more verdant and flowery. Perhaps ecosystems are more multi-faceted in nature.
Counter-counter-anecdote: Our Roses love the weather here.
Just moved to Utah (wife's job was relocated here) a couple of years ago after many decades in the southeast and midwest. Some stuff grows like crazy here, some stuff doesn't.
Nothing in the continental US competes with the gulf coast when it comes to sheer masses of flowering vegetation. Everything is green and most of it flowers. Everywhere you look, there's actually really neat and beautiful plants. But most of it is what folks think of as "weeds". Non native stuff in yards (what people think of as "flowers") often struggles. E.g. yapon is native and is often an ornamental and it'll grow like crazy, or even worse, try planting some Mexican petunias... I love those things, but they are a purple swarm that will swallow everything.
But plant your daffodils, and while they'll grow, they get overpowered and outspread by everything native. A lot of common ornamentals can't take the fully saturated then dry cycles and clay soils, too. Then there are the bugs. Everything gets eaten by something. So so so so so many bugs.
But in Utah, those common ornamentals absolutely thrive _if_ they get water. When you irrigate here, things grow like crazy. Flowers are huge and there are basically no bugs here at all. (I don't count box alder beetles or brine flies as "lots of bugs".)
But native vegetation can survive the actual climate here, while most ornamentals can't without extra water.