Talupia crimson is one of the first harvestable flowers available to the players in the Herblore skill path alongside Talupia blancus and Talupia Tangio.
They are used to craft a Speed Potion with the help of these two herbs, and are used for a couple different buffing potions of varying tiers. Giving 2 XP in 
Herblore
per harvest, it isn't the most effective way to farm Herblore XP, but very versatile as an ingredient, and you will need large amounts of it on the grind for 99.
Farming locations for Talupia crimson include Lumbridge, Draynor village, and Varrock. With the most efficient location being right outside the bank in Draynor village.