Where to find Black Lotus?
If you are searching for Black Lotus than you need to head over to the Gorilla area in Map: N5 / N6 called the Black Garden. It’s a hidden room off one of the ruins. It’s also filled with poisonous gas so you will need a breathing mask.
It’s a bit dark so you have to really search for all the flowers in the room. Gorillas will pop out and attack you.
Where to find Frost Lotus Flower? Well, picture a place under a bridge where it’s butt ass cold and that is where it will be. Frost Lotus is going to be in map E11 under the Bridge of the Betrayer. You might need armor made for cold weather. Bring your sickle because it will help.
See pictures below
Where to find the Purple Lotus Flower? The best place for abundant of Purple Lotus is over in the swamp area.
This is what Purple Lotus looks like. Use a sickle and harvest it.
There is a swamp pond in map L7 where Purple Lotus grows all around it. See picture below