Dendrobium is a Local Specialty that can only be found in Inazuma’s Kannazuka and Yashiori Islands, this materials can be used to ascend the four star character Kujo Sara, and to make Redrot Bait there can only be a total number of 55 Dendrobium on the map at one time, and once you collect one of them you will need to wait 2 days for them to respawn again.
Every 2 Days
A vibrant plant that has also been named the "lycoris" by the poets. It was once thought extinct in the Inazuman archipelago, only to re-emerge now upon the battlefields. It is said that it blooms most enchantingly where much blood was spilled.
Kannazuka and Yashiori Island
Characters that use Dendrobium for Ascension
Items that can be crafted using Dendrobium
Dendrobium Map Location
You can find this map by going to Teyvat Interactive Map website and search for all the materials you need, note that once you farm one of these Dendrobiums you will need to wait 2 days for it to respawn again.