Darkforestwarrior
With such a high volume of flowers, there seem to be a couple flowers that have the same meaning, which we could if we want use to represent separate characters. Also as Lightning pointed out, some characters might match different things at different points in their lives. I also quite like the idea of having pairings!
And for my daily batch of suggestions lol:
fig // argument — Bramble/Squirrel
They argued nonstop when they were younger, and then their relationship had trouble later on when Brambleclaw found out Squirrelflight didn't actually give birth to the three.
primrose // childhood — Rusty, Smudge, or Tiny?
poplar, white // time — Jay's Wing
Jayfeather in a way went back in time…in a weird way
quince // temptation — Lion/Heather or Ivy/Tiger maybe? Could apply to numerous forbidden shippings
rose, white // a heart unacquainted with love — Mousefur
She kinda strikes me as an aromantic character, idk, I think it might fit
stephanotis // happiness in marriage — Sorrel/Bramble?
they've always seemed to be an especially good couple I think
dittany // childbirth — Silverstream?
It kinda just describes her death this one might be too much of a downer lol
marigold // grief — an alternate character for this one could be Snowkit
actually, for ease of access, here are a bunch of the ones that I think could easily apply to a pairing of some type:
acacia // secret love —
agapanthus // love letter —
alstroemeria // devotion —
baby's breath // everlasting love —
cactus // ardent love —
carnation, red // my heart breaks —
carnation, striped // i cannot be with you —
carnation, white // sweet and lovely —
clove // i have loved you and you have not known it —
clover, white // think of me —
cosmos // joy in love and life —
cranberry // cure for heartache —
cypress // mourning —
everlasting pea // lasting pleasure —
freesia // lasting friendship —
fuchsia // humble love —
heliotrope // devoted affection —
honeysuckle // devotion —
ice plant // your looks freeze me —
jasmine // separation —
jasmine, indian // attachment —
jonquil // desire —
laburnum // pensive beauty —
lady's slipper // capricious beauty —
lettuce // coldheartedness —
lilac // first emotions of love —
linden tree // conjugal love —
lungwort // you are my life —
mignonette // your qualities surpass your charms —
moss // maternal love —
myrtle // love —
orange blossom // your purity equals your loveliness —
orange lily // passionate hate —
pansy // think of me —
peach // your charms are unequaled —
peach blossom // i am your captive —
pear // affection —
petunia // your presence soothes me —
phlox // our souls are united —
pineapple // you are perfect —
red verbana // united with love against evil —
rose leaves // please believe me —
rose, moss // confession of love —
rose, red // love —
rose, yellow // infidelity —
saxifraga // affection —
scabiosa // unfortunate love —
sorrel // parental affection —
tansy // i declare war against you —
thorn apple // my heart concealed by thorns —
tulip // declaration of love —
vetch // i cling to thee —
yarrow // cure for a broken heart
yellow rainflower // the heart's betrayal —