but OMFG I'm kind of sad I didn't think to get Dirt and Earthworm along with Petrichor! (plus a rain scent surely)

In that vein, you might be interested in CB I Hate Perfume's Black March (company founded by Christopher Brosius, who made most of the early Demeter scents before leaving to do his own thing). It's the best "cold rainy spring, things just starting to grow in muddy earth" scent I've ever smelled.