What’s the difference between Flower Garden and Flower Garden Free
Both apps are exactly the same, except that the paid version of Flower Garden comes with three Flower Shop items built in: Common Seeds, Bonus Seeds, and Extra Pots. Feel free to continue using the one you’re already using and buy any items you want from it.
The two apps are considered different apps by the App Store, so unfortunately that means you can’t share your Flower Shop purchases between the two.
If you want extra garden space, you can always download the other app and get more gardens there as well.