If you want to build a lotus pond on the terrace, you must first choose a good location, preferably a balcony facing south. Lotus also needs sunshine. If your terrace is in the north, it is recommended not to cultivate lotus flowers like this, because you have worked hard and the lotus will not grow well in the end.
After choosing a location, you have to decide how big a lotus pond you want to build, mainly depending on how many lotus plants you want to raise, but it is generally recommended that one or two square meters is enough. If it's too big, it's also a problem whether you can bear the weight of your terrace, because you have to put soil and water in it. After deciding the area to be used, you can prepare the mortar, cement and building materials you need.
Be sure to choose a very good waterproof material, and don't save money on it, because if the waterproof treatment is not good, your lotus pond will be beautiful again, and it will be demolished in the future, because after all, it is on the terrace and there should be neighbors downstairs, so waterproofing must be the top priority.
After waterproofing is done, it is easier to build a lotus pond. As long as you like, you can build a capital. If conditions permit, the lotus pond should be 80 to 100 cm deep, which is beneficial to the growth of lotus. Moreover, if you can reach this depth, not only will your lotus grow well, but you can also have lotus roots to eat in autumn. The mud for growing lotus flowers must be very special.