Sibling for Poppy

[milkytea]

Love floral and traditional names. We're not knowing the gender this time so looking for boys and girls names

Poppy is a lovely name.
Flora, Iris, Lily are my favourites on that theme. Iris and Lily are tall colourful flowers, and I like that better than the smaller Daisy, etc. There's also Lilias, which is an old variant of Lily, and I really like that too.
There's Tulip, of course - less common but a very established name in some cultures.
Or more treelike and perhaps less themey - Rowan, Hazel, Willow, etc. I really like Rowan for a girl.