how do you get growth potions in tribez and castlez

The game is all about the start of humanity and it lets the players act as one of the first human builders in an era when everything was so new, so clean and so untouched. The Tribez takes the players back to the very start of Stone-Age and allows them to enjoy a remarkable Empire Building Simulation. The Tribez and Castlez offer core features such as Develop your Country, Rebuild your Kingdom, Beautiful Graphics, Conquer enemy Castle, and more. There are different levels available, and each level offers a set of endless adventure and a variety of enemies. Use different towers to fend off enemies by reaching your castle and kill them instantly to avoid increasing their amount. Become a hero, when vicious monsters, villains, and fearful creatures are coming toward your castle and defeat them by controlling your armies.

During the gameplay, you can command your people, grow crops, harvest them and sell at good prices to upgrade your castle. In the beginning, you need to create your castle using different buildings, structure and decorate it using accessories and items. You assume the role of the ruler and will face different problems and challenges throughout the game. The game takes you in the fantasy world of Tribez and Castlez and embarks you on an unforgettable adventure. The Tribez and Castlez mix the Farming, Real-time Strategy and Building Simulation developed and published by Game Insight for mobile platforms.

How do you get growth potions in tribez and castlez