Let me tell you about Annalaide Plantar (Sprivy's daughter) and ask some questions....

I'd imagine Sprig and Ivy would have a daughter: Annalaide Plantar AKA Anna (I suggest that Sprig would name his daughter after Anne but calls her Anna to avoid confusion). Her personality would be a mix of both of her parents with a bit of her aunt Polly's too. She would be a yellow-orange color with her hair being red-orange and looking similar to Anne's (even down to the leaves). She would call Olivia and Yunan her aunts and Grime her uncle (PS I'd imagine Grime would have a hook hand in the future like Eda Clawthorne). Sadly, Andrias wouldn't be able to see her because he would be dead. So now I have some questions about Anna's family and how they would do with her:

How would Sprig and Ivy do as parents?

How would Hop-Pop do as a great-grandfather?

How would Polly, Yunan and Olivia do as aunts?

How would Grime do as an uncle?

Also, if the Calamity Trio ever came back to Amphibia, I could see Anna go on adventures with each of their kids:

Britney Boonchuy (Anne and Sasha's daughter)

Sam Wu (Marcy and Anne's daughter)

Alex Waybright (Sasha and Marcy's daughter)