This isn't possible.
To attract Moshlings you need to plant three seeds in your garden. You buy seeds from the stand on Main Street or at the Port. Each Moshling has a different combination so you need to work out the correct combination to attract the Moshling that you want. Keep planting seeds until you work it out!
The seed/flower needed to attract Nipper the moshling on Moshi Monsters is the Robo Dendron.
it is the seed you plant to attract nipper the moshling!
On the bottom right in your moshling garden.
When you purchase the Moshi Monsters: Moshling Zoo game for Nintendo DS, you will also get a code. Enter the code at Moshi Monsters and you will get a Robo Dendron seed. Plant that seed with two other seeds and you will get Nipper the Titchy TrundleBot.
Leothe Abominable Snowling is attracted by the Forget Me Not flower on Moshi Monsters.
At the moment you cannot get betty!
You only need one Frozen Forget Me Not seed for Leo the moshling on Moshi Monsters. Plant the Frozen Forget Me Not seed with any two other seeds in your Moshling Garden.
Plant the Hip Hop Hibiscus seed in your Moshling Garden with any 2 other seeds. Wait for the flowers to grow then you will get Blingo the Flashy Fox moshling on Moshi Monsters.
There are no seed/code combinations currently for this moshling.
No. Once you have planted any seed in your Moshling Garden, it can not be used again.
The code for Roxy the Precious Prism is found in the book, "Moshi Monsters: Moshling Collectors Guide". However, the code works one time for every member on Moshi Monsters. To get the Radiant Roxy Rose seed, enter HOBBIDIDANCE (in all uppercase) as the secret code on the login screen. Then plant the Radiant Roxy Rose, any seed, any seed in your Moshling Garden to attract Roxy.
Rooby has not yet been released as a moshling on Moshi Monsters (January 2013). Watch the Daily Growl for information about when Rooby is released on Moshi Monsters.