Drip irrigation system

List of things that you need:

a) A water filter system which has reverse Osmosis. The outlet of pipe from the water filter needs to be inserted into a large water storage drum.

b) A pump which is readily available in https://gardenguru.in/22-garden-tools and in https://www.trustbasket.com/collections/drip-irrigation-kits This is will help push the water out of the drum.

c) A timer which allows you to time the watering when you are away on holiday. This can be purchased in Amazon. Just do a search, read the reviews and buy one according to your budget..