Water plants is a task that involves providing water to plants in order to keep them healthy and growing. The three crossword solutions for this term are ALGAE (5 letters), REEDS (5 letters), and NAIDS (5 letters). ALGAE are aquatic organisms that can be found in both fresh and salt water, and they are often used as a food source for other organisms. Reeds are tall, grass-like plants that grow in wet areas such as marshes and wetlands. Naids are small aquatic worms that live in the sediment of rivers and streams and feed on organic matter. All three of these organisms require water to survive, and providing water to them is an important part of keeping them healthy and thriving.