Where can I find all the exotic plants for the "Duchesses and Other Animals" achievement?

The ''Duchesses and Other Animals'' achievement in Red Dead Redemption 2 requires you to collect a variety of exotic plants for Algernon Wasp, a character in Saint Denis. This questline is part of the ''Duchesses and Other Animals'' mission series, which involves gathering specific plants and animal parts. To unlock the achievement, you must complete all five parts of this questline, which includes finding and delivering 43 unique items, including exotic plants.\n\nTo begin, you must first unlock the questline by progressing through Chapter 4 of the main story. Once you reach Saint Denis, you can meet Algernon Wasp at his mansion. He will task you with collecting specific plants and feathers. The exotic plants required are Lady of the Night Orchids, Moccasin Flowers, Rat Tail Orchids, Spider Orchids, and Acuna''s Star Orchids. Each type of plant has specific locations where they can be found, and some are rarer than others.\n\nLady of the Night Orchids are found in the Bayou Nwa region, particularly near the Kamassa River and Lagras. These orchids grow on trees and are most commonly found at night. Moccasin Flowers are located in the swamps of Lemoyne, especially around Bluewater Marsh. Rat Tail Orchids are found in the forests of Roanoke Ridge, near the Elysian Pool and Brandywine Drop. Spider Orchids are scattered across the swamps of Bayou Nwa, often near water sources. Acuna''s Star Orchids are the rarest and can be found in the southern part of the map, near the coast of Guarma or in the Bayou Nwa area.\n\nTo efficiently collect these plants, use the in-game map to mark their general locations. Equip the Eagle Eye ability to highlight plants in the environment, making them easier to spot. Some plants only spawn during specific times of the day or under certain weather conditions, so plan your search accordingly. For example, Lady of the Night Orchids are more likely to appear at night, while Moccasin Flowers are easier to find during the day.\n\nOne common challenge is the limited spawn rate of certain plants. If you cannot find a specific orchid, try leaving the area and returning after a few in-game days. This resets the spawn points and increases your chances of finding the required plants. Additionally, some plants may require you to explore hard-to-reach areas, such as cliffs or dense forests. Use your horse to navigate these terrains and save time.\n\nOnce you have collected all the required plants, return to Algernon Wasp in Saint Denis to complete the questline. Be prepared for multiple trips, as the quest is divided into five parts, each requiring a different set of items. Completing all parts will unlock the ''Duchesses and Other Animals'' achievement.\n\nPractical tips for this achievement include using the Legendary Buck Trinket, which increases the quality of plants you collect. This ensures that every plant you pick is in perfect condition, saving you time and effort. Additionally, keep a checklist of the plants you need to avoid confusion. Finally, be patient, as some plants may take time to spawn. With persistence and careful planning, you can unlock this achievement and complete Algernon Wasp''s questline.