Cassia is related to the cassia tree, which has yellow flowers and produces a spice that can be a substitute for cinnamon. Keziah, the name of Job’s daughter in the Old Testament, derives from the name of the plant as well. Cassia also has ties to the Ancient Roman name Cassius, an Ancient Roman family name meaning "hollow."

A quaint and quirky flower name, until recently considered a bit too prim for most American classrooms but brought back to life in recent years by the attractive character of Primrose "Prim" Everdeen in the Hunger Games series. In the Top 300 girl names in England and Wales and on Nameberry, Primrose remains rare in the US, but is made more accessible by a raft of sweet nickname options, including Rosie and Posy.

One of the new bird names, like Lark and Wren, this one's associated with the billing and cooing sounds of love. Soft and gentle, Dove also has the admirable association with peace.

Cove is an up-and-coming nature name whose cool sound and peaceful image saw it rising for both sexes... until COVID-19 hit. It remained steady in use for boys in 2021, but actually increased for girls, although it remains a seriously rare and distinctive choice for either gender.

Bryony is an unusually strong plant name --the bryony is a wild climbing vine with green flowers --that caught on in the U.K. before sprouting here. The name of the young character in the Ian McEwan novel Atonement is spelled Briony, which is the variation and Bryony the original.

This shimmery Age of Aquarius unisex flower child name is making a comeback, along with metal and gem names like Steel, Jade, and Ruby.

This evocative green nature name, heard much more frequently as a surname, is associated with playwright Moss Hart (born Robert), who co-wrote (with George S. Kaufman) such enduring Broadway comedies as The Man Who Came to Dinner and You Can't Take it With You.

Make that bird name, and while it does work for both genders, it's far more popular for girls, via Raven Symone.

Tempest is one of those names that could go either way. Cool, evocative modern word name? Or asking for trouble? Your call, but if you decide the former image is dominant, be warned that some people will see it as the latter.

From the botanical name for common heather, Calluna vulgaris, which ultimately derives from the Greek kallos "beauty". A unique, nature-inspired route to the fashionable nicknames Callie and Luna.