Moir Gardens, Botanical garden in Poipu, Kauai, United States.

Moir Gardens covers 35 acres within the Outrigger Kiahuna Plantation at 2253 Poipu Road, just east of Poipu Beach Park. The botanical garden holds rare cacti and succulents, bromeliads, orchids, mature trees, and water lily ponds.

Alexandra Moir established this garden in the 1930s while her husband managed Koloa Plantation, Hawaii's first sugar plantation. The collection grew to become one of the world's leading cactus collections.

The garden incorporates native Hawaiian plants such as wiliwili, hau, coconut, and plumeria, reflecting the natural flora of the islands.

The gardens are located at 2253 Poipu Road and can be visited free of charge daily. Visitors navigate the grounds using self-guided routes throughout the property.

By 1948 the private garden was described as one of the ten best cactus and succulent gardens in the world, six years before it opened to the public in 1954. The recognition came while it was still part of the Koloa Plantation manager's grounds.