Milkweed

Milkweed is a plant that can be found in Red Dead Redemption 2.

Compendium
Milkweed can be identified by the large stems and leaves, and clusters of lilac flowers. It is a popular plant that can be seen growing near the river banks of Bayou Nwa, and Dewberry Creek in Lemoyne. This herb contains cardiac glycoside poisons which can be fatal to animals, depending on the amount consumed and the age of plant. Arrows can be tipped in the poisons when hunting and fighting. If processed properly, this herb can be consumed to increase your Health levels or crafted into special items.