Designing a Tropical Garden With a Little Cost

Two weeks ago my friend asked me something about designing a tropical garden. He wanted to design a garden with tropical design, but he was confused because they have no idea.he said, he want smaller water feature like a pond or riverbed into his landscape.
Another problem he faced was the cost to create a tropical garden. with little cost, then I started making a list of everything that we will buy.
And finally we agreed to purchase:

• 2 sacks of cement, 4 sacks of sand, 2 bags of gravel, a water pump. (This is the material to create a small pond and decor)
• small size of the bamboo trees, palm trees, small size.
• some herbaceous plants.
  

to design this garden we do it in 3 days. first and second day we use to make a small pond. It took 2 days to make the pond dry and perfect. on day three we set all the trees that we buy and finish.

then a week after making the garden, my friend bought koi fish to fill a small pond.turned out with little cost we can create a tropical garden with great results.