I rarely get to show off my garden to family members I don't live with. Often the holidays they do come over my garden is transitioning from one season to the next and lacking in flowers. Despite the diversity in my garden few of the species bloom with any abundance. They don't always demonstrate their usefulness either.
But the other thing about beeflies is that most of them are parasites of Bumblebee hives. They invade the nests, lay a few eggs and the maggots eat the wax. Bumblebees don't really pollinate phlox though, so in order to have the pollinator of this Phlox species you need enough wildflowers and trees established to support a few bumblebee hives.
As an aside, I did a google image search for "Bumblebee Phlox" and almost all the images that come up are of Carpenter Bees which chew holes in the sides of the Phlox flowers to gain access to the nectar and probably don't pollinate the flower. Bumblebees do visit Phlox but of the images taken I only saw the summer flowering species. Not Phlox divaricata. I'm not saying it doesn't happen but it seems rare if it does.
The issue with it is that it's a biannual and the only place selling it online basically has an F rating from the Better Business Bureau. I bought from them once and they sent me Watercress by mistake, yes that little invasive lawn weed with exploding seed pods everyone tries to get ride of... This place Sells that... to people... for money... and they pay them to do it apparently...
I called them about the mistake and they refused to help me until I had sent them pictures to prove they had made the mistake and then demanded the plants back at my cost! About a month later I received a trash bag in the mail of Fernleaf Phacelia roots that were lacking any green growth to them. This was in May so the plants had already flowered which they do at the end of their life cycle... So they sent me a bunch of dead plants.
So in order for me to obtain this species I have to drive to Native Plant Sales in Delaware and Pennsylvania (I'm in NJ) and hope they happen to be selling this species.
I fell in love with this stuff at the Mt. Cube Center in DE where it grows in huge abundance on some years. One time during their annual Wildflower Celebration I was telling one of the gardeners there I'm friendly with how I wish the species were more available to sale, especially in seed form. You'd think someone would sell it in seed form given that it's a biannual or at the very years recently germinated plugs. The Gardener couldn't believe no one was doing that and then told me, to my horror, that they actually cull the stuff there every few years! They fill up huge trash bags with it.... I wonder if that awful online nursery I bought from was stealing from their garbage?
This species is also called the Caladine Poppy, but I hate this name because I have no idea what a Caladine is besides a different plant. Webster's Dictionary says it's basically a yellow flower scientifically known as Chelidonium majus, which is an invasive weed in America often mistaken for Stylophorum diphyllum. So it's common name refers to a species that it isn't... What? Is the dictionary wrong? It seems to be implying that the Calandine Poppy is the Calandine Poppy but not that Calandine Poppy, rather it's this Calandine Poppy over here.
If you google Calandine Poppy it certainly gives you Stylophorum diphyllum. So someone stole a name somewhere or is wrong.
I have another one that's just as big as the red flowering one (two pictures up) but with flower petals in this shade. They all smell the same but that might be coincidence. We'll see what they do next year.
I've been finding Trillium growers (even reputable ones that don't steal from nature) have difficulty distinguishing some species apart. Lots of reasons for this. Growing them from seed they require 2 years to germinate, produce a single leaf of foliage for the next 2 to 3 years and then all look fairly identical until flowering. Take into account having to move flats around in a green house and it's easy to see over even just a 5 year period how things can get mixed around. Likewise Trilliums are prone to hybridizing with some frequency.
Whatever the case, I'm happy to see they're at least getting pollinated both by vinegar flies and some sort of pollen beetle.