The list of species to evolve and how to evolve them are:
Candary Have a Sparrowmint eat a Buttercup flower.
Juicygoose Have a Quackberry eat a Gooseberry.
Redhott Purchase a torch and place it in your garden then have a Taffly fly through the flame and when it lands water it with your watering can.
Lackatoad Have a Lickatoad eat a Night shade fruit then tap it on the head with your shovel.
Salamango Have a Newtgat eat a chilli.
Zumbug Have a Horstachio eat a Blackberry fruit and a daisy flower.
Twingersnap Have two syrupents romance and once the egg arrives watch it with your shovel equipped. The egg will do 3 big bounces, on the third bounce whack it with your shovel.
Fourheads Same as above but romance the Twingersnaps instead.