Two flowers you can get almost from the beginning are tier 4, dahlia, and delphinium.
And then there's the snapdragon, that you don't even see until the herbarium realms and it is only tier 2.
I would expect resources one can't get until later to be better than ones you can get early on
I just found Tulips and Chamomile as well being Tiers 2 and 1 respectively seems more than a bit off seeing that I had to progress a ways just to get them.