Various ways to get hold of it
Growing and maintaining a Holi basil or Tulsi plant is easy without any extra care or effort pouring in it.
Buy a Tulsi pot online and plant Holi basil’s seedlings there and water it.
After a few months or, weeks when the plant germinates completely, pluck few leaves and wash them with water to clean dust, dirt, etc. then, wipe them/dry with a towel.
You can buy/get hold of Holi basil leaf from the market/ stores too, but you need to keep certain things in mind/factors while choosing:
Make sure that you buy/pick only the vibrant colored green leaf which doesn’t have any black, dark spot on it.
Avoid picking/buying leaves that have small openings or holes in them.