You can not get 3 Radiant Roxy Roses, you can only get one.
So far, the secret flowers have required a code which has been obtained through the purchase of a Moshi Monsters item except for the code for the Radiant Roxy Rose.
the code for the radiant roxy rose is hobbididance.
It can be anything as long as you plant the Radiant Roxy Rose.
You can't get Roxy without the Radiant Roxy Rose
Any two random seeds and a radiant roxy rose you can get this seed by typing in the code: HOBBIDIDANCE
Go to the Moshi Monsters sign in page and find the secret code box. Type in HOBBIDIDANCE and sign in. Go to your garden and the Radiant Roxy Rose will be in your seed bag. Plant the Radiant Roxy Rose seed and also plant two other random flowers. Wait for them to grow and you will attract Roxy to your Moshling Garden.
You enter 'hobbididance' as a code on Moshi Monsters when you log in in the Secret Code box.
type in the code HOBBIDIDANCE
it gives you a radiant Roxy rose
To get the Radiant Roxy Rose seed, enter HOBBIDIDANCE as the secret code. This code can only be used once.
You have to be either a Basic Member (free) or a Moshi Member (paid) to get the Radiant Roxy Rose. However, you can only get the Radiant Roxy Rose one time, no matter which type of membership you have.
To get the Radiant Roxy Rose, you need a code: HOBBIDIDANCE