Just farm little dragonfly's, then get (after 4 dragonfly's) 6 gryphonettes. after you have enough for hobb's, take 5 days at grimm's, selling your 6 gryphonettes for 6 more dragonfly's. after you SAVE all those eggs, go to hobb's. after selling all your pets from grimm's, buy blue dragonfly's. farm eggs for 10 days with (5) blue dragonfly's, mix all the eggs. after you get all the eggs, talk to the alchemist. mix your blue and green eggs of dragonflies first, creating tons of green dragon eggs. hatch ALL of those eggs, then use the dragons as a quick-fix. use the eggs, to make more DRAGONS. after you have 10 green dragons (its a reasonable number to take care of) just keep hatching the eggs till you make more dragons. sell those extra ones for TONS of money. repeat till u can get rosewood, AND purple dragons, =) this should get you through the game quite easily.
For more hints, tips and strategies go to Casual Game Guides ... You can find the link by doing a Google search ... Would give it to you but not allowed to post URL's on the forum ... Hope that helps ...