M!x Flower seeds?

[Miss Peanut Butter]

So in order to unlock Rainbow Hills, I have to use the flower seeds outside. I can't seem to find them in any of the shops i've unlocked so far.

Where can I find them?

 

[*Hayden*]

Flower Hills, Shop>Items>Scroll until you see it

 

[tamaninjacat]

*Hayden* answered your question but it's also important to note that when using the flowers it needs to be nice outside or else Rainbow Hills won't appear. You also need to try between 7am and 3pm for a chance to unlock it (it may take a couple of tries). Here's the guide that I've often referred to when trying to unlock new areas: https://www.tamatalk.com/IB/topic/193823-tamagotchi-mx-how-to-unlock-the-locations/