I have an ecology minor so not an expert but was trained by some really forward thinking people who were heavily research based. And I have also been a gardener so worked day in day out in various habitats, studied landscape for 20 years and on speaking with dual ecologists/ designers they have similar thoughts to me so that’s reassuring.
Basically the gov have implemented BNG, which is biodiversity net gain. But it should be really called conservation based financial market. In poor sites; which most sites are. It just locks in the crap stats of things. That’s a whole 20 posts in itself.
But horticulture and garden design/ trends come from professional work, Landscaoe architecture, theme du jour and horticultural availability. When professionals are not allowed (or heavily penalised financially) to specify non natives or even cultivar natives then that leads into both ‘theme du jour’ and availability.
But the big problem is I don’t think natives are all that. Loads of studies have shown that mixed planting is best. We have an incredibly limited and small native flowering fauna for typical soils. You get exciting stuff happening in niche soils like limestone and low fertility but for your bog standard English soil the climax is brambles, scrub then woodland. With very little nectar.
I think the biggest driver of encouraging wildlife is in biomassing, water and management. As in it doesn’t really matter what the plants are (As long as most are physically nectar available); it’s more about dimensionally creating habitat types that wildlife recognises to live in, hunt in, eat in. Certain species do need specific species to breed on but we can add those in. And they are ‘weeds’ so they are going to be around somewhere close.
And I have seen this. Our most wildlife success garden wasn’t designed to be. It did not have a single non cultivar or straight native. It was ornamental, alien or cultivar. We had bats move in, migrating birds, hoverflies, dragonflies, amphibian life. Water is a big one! That place was alive like no wildlife reserve I have ever seen. And yet wouldn’t be allowed to be planted with heavy financial fines in professional work.
So it’s not helping wildlife. It’s not helping biodiversity because they are actually decreasing biodiversity (by demonising cultivar and non native). & with climate change we need to be increasing diversity. Particularly when talking about long lived like trees and shrubs.
It’s really frustrating. People will figure it out again. Maybe 20 years. But we don’t really have any time to lose right now. Wildlife is struggling, our environment is struggling. People are struggling and environment helps mental health, community cohesion, sense of self and worth.
Basically in short big problem. But ecologists have literally been trained their whole life to believe our native flora is sacred. And it is. But we don’t need it exclusively everywhere. We are one of the luckiest countries in the world that our climax habitat is so strong. The only stronger habitat for our soil/ climate is Japan so we can pretty much grow anything from anywhere without risk to our native habitats.