[name_m]Hi[/name_m]. Me and my friend are co-writing a book and we’ve decided that we want all our characters to have unusual nature names. We already have and are using [name_u]Juniper[/name_u], [name_u]Aspen[/name_u], [name_u]Ash[/name_u], [name_f]Willow[/name_f] (though thats not too unusual), [name_f]Azalea[/name_f], possibly [name_m]Wolf[/name_m] I think and [name_u]Rain[/name_u]. We need a lot more though, preferably somehow related to nature, but regular unusual names that sound cool are fine too.
Nature: [name_u]River[/name_u], [name_f]Marigold[/name_f], [name_f]Poppy[/name_f], [name_u]Harbor[/name_u], [name_u]Bay[/name_u], [name_u]Brook[/name_u], [name_u]Lake[/name_u], [name_f]Lark[/name_f], [name_u]Storm[/name_u], [name_u]Oak[/name_u], [name_f]Chrysanthemum[/name_f], Diasy, [name_f]Bluebell[/name_f], [name_f]Maple[/name_f], [name_m]Moss[/name_m], [name_m]Thorne[/name_m], [name_f]Soleil[/name_f], [name_f]Moon[/name_f], [name_m]Hawk[/name_m]
Unusual: [name_m]Ryker[/name_m], [name_m]Carney[/name_m], [name_f]Pallas[/name_f], [name_f]Kirsi[/name_f], [name_f]Heloise[/name_f], [name_f]Delta[/name_f], [name_f]Callisto[/name_f], [name_u]Burgundy[/name_u], [name_m]Ambrose[/name_m], [name_u]Doon[/name_u], Lir, [name_f]Semiramide[/name_f], [name_f]Cerys[/name_f], [name_m]Cyprian[/name_m], [name_m]Drexel[/name_m], [name_f]Elysia[/name_f], [name_f]Itzel[/name_f], [name_u]Vesper[/name_u], [name_m]Soren[/name_m], [name_m]Lysander[/name_m]
I hope this helped or inspired. Good luck and happy writing!
I love topics like these 
I hope animal names are also okay, as I always find those go well with the nature theme.
Names:
Vardan (Armenian for “rose”)
[name_m]Todd[/name_m] (meaning “fox”)
[name_f]Acacia[/name_f] (tree)
[name_f]Ginger[/name_f] (ginger root, maybe nickname her [name_f]Ginny[/name_f])
[name_f]Laurel[/name_f], [name_u]Bay[/name_u] (I guess I don’t need to explain those two)
[name_u]Cloud[/name_u]
[name_f]Hyacinth[/name_f] (beautiful flower, though a little out there)
[name_f]Freesia[/name_f] (again flower, and an out there name)
[name_f]Calanthe[/name_f] (nickname maybe [name_f]Cala[/name_f])
[name_f]Azure[/name_f] (like the sky)
[name_f]Topaz[/name_f] (a gemstone)
[name_m]Callum[/name_m] (dove)
[name_f]Elowen[/name_f] (elm tree)
[name_m]Auryn[/name_m], [name_f]Aurelia[/name_f] (metal name)
[name_u]Canyon[/name_u]
[name_f]Fawn[/name_f] (animal again)
[name_f]Kodiak[/name_f] (kodiak bear?)
[name_u]Corbin[/name_u] (“raven”)
[name_u]Jay[/name_u]/[name_u]Jae[/name_u] (yep, bird)
[name_m]Surya[/name_m], [name_m]Ravi[/name_m] (both “sun” in Sanskrit)
[name_m]Ajax[/name_m] (literally “earth” or “land”)
[name_f]Kalina[/name_f] (a tree)
[name_f]Pomona[/name_f] (a little old fashioned maybe)
[name_f]Ione[/name_f] (meaning “violet flower” and a nymph in Greek mythology)
[name_f]Magnolia[/name_f] (you probably know that flower)
[name_u]Sierra[/name_u] (“from the mountains”)
[name_f]Tempest[/name_f] (a storm)
[name_u]Slate[/name_u]
[name_f]Coral[/name_f]
[name_f]Opal[/name_f]
You could do [name_u]River[/name_u] and [name_u]Phoenix[/name_u] as well as [name_m]Cole[/name_m]. I also think [name_m]Wolf[/name_m] and [name_u]Rain[/name_u] could work, as well as [name_m]Fox[/name_m], like [name_m]Fox[/name_m] Mulder from The X-Files. That could work, and maybe [name_f]Poppy[/name_f], [name_f]Rose[/name_f], and [name_f]Lilly[/name_f] could work.
Thank you, this has been really helpful!
[name_u]Linden[/name_u] and [name_u]Rowan[/name_u] are trees.
[name_m]Hale[/name_m]
Myosotis (Forget-me-not flower)
[name_f]Petunia[/name_f]
[name_f]Aster[/name_f]
[name_u]Brooke[/name_u]
Creek
[name_f]Luna[/name_f]
[name_u]Linden[/name_u] and [name_u]Rowan[/name_u] are trees.
[name_m]Hale[/name_m]
Myosotis (Forget-me-not flower)
[name_f]Petunia[/name_f]
[name_f]Aster[/name_f]
[name_u]Brooke[/name_u]
Creek
[name_f]Luna[/name_f]
[name_u]Linden[/name_u] and [name_u]Rowan[/name_u] are trees.
[name_m]Hale[/name_m]
Myosotis (Forget-me-not flower)
[name_f]Petunia[/name_f]
[name_f]Aster[/name_f]
[name_u]Brooke[/name_u]
Creek
[name_f]Luna[/name_f]