Being an open-world game, Genshin Impact players need to regularly embark on expeditions to gather resources.
1. Sakura Bloom - Electro Flowers

Sakura Bloom is one of the resources that requires players to use the Electro element to collect, making it quite cumbersome. To collect this type of flower, players need to either attack it with an elemental strike, walk towards it while being electrocharged, or simply carry an electrograna.
Sakura Bloom can only be found on Narukami Island in the Inazuma region through gathering. It is also not sold in any shop. There are 75 Sakura Bloom on the island, and it takes 48 hours before they respawn. The convenience for players is that this type of flower only exists on a single island, making it easier to establish a farming route, but you still need an Electro character in your lineup.
2. Violetgrass - Violet Tassels

The Enigmatic Pouch Petal is quite a peculiar flower indeed. This exquisite name is reserved for flowers that grow solely on cliff faces, necessitating a bit of climbing to harvest. What's more bothersome is that these pouches are sparsely scattered; the largest patch might only have 3 or 4 blooms.
Fortunately, in the Liyue region, there are vendors who sell this flower. One such place is the apothecary within Liyue Harbor, and the other is Madame Verr Goldet of the Drunken Monk Inn. Moreover, if you're keen on procuring Enigmatic Pouch Petals, there are 169 different blossoms spread across the continent with the aid of Qiqi or Yanfei. Another stroke of luck is that you can cultivate these flowers yourself and harvest them after 3 days.
3. Philanemo Mushroom - Philanemo Mushroom

The Philanemo Mushroom is a fungus that exclusively grows in the region, and peculiarly, it only thrives atop buildings. Gathering Philanemo Mushrooms is just as eccentric as obtaining Enigmatic Pouch Petals. In fact, Philanemo Mushrooms only grow as solitary specimens in each location, making it incredibly arduous for players to climb up and collect them.
Philanemo Mushrooms can be found in the city of Mondstadt, the Dawn Winery, or Windrise. They proliferate abundantly on rooftops, tall structures, and notably, windmills. Additionally, you can purchase these mushrooms from the vendor Chloris, albeit limited to 5 specimens every 3 days.
4. Sango Pearl - Sango Pearl

The Coral Pearl is a special resource found on the Watatsumi Island. Its unique color, size, and rarity require players to be quite observant to locate it. Its pink hue and small size make it aesthetically pleasing and blend well with the Watatsumi Island, yet it poses a challenge for players.
After the latest update, Coral Pearls can be found on Watatsumi Island or Enkanomiya. However, players cannot purchase them. There are 54 pearls scattered across Teyvat, and Gorou will assist players in locating this commodity more easily.
5. Crystal Marrow - Crystal Marrow

Crystal Marrow grows on the remnants of the once mighty Orobashi beasts. It primarily concentrates on Yashiori Island, easily visible as they hover from above due to their distinctive purple hue. However, similar to Enigmatic Pouch Petals, they are located in high and disparate locations, making farming them quite cumbersome. You can find 66 Crystal Marrows across the map.