How long does it take to grow a geoduck to full size?

Asked on: 7/24/2025

This question has been asked1times.

Growing a geoduck to full size typically takes 5 to 7 years.

Estimated Duration: 2190 days

Geoducks, large burrowing clams native to the Pacific Northwest, require a long growth period due to their slow maturation rate. They start as larvae before settling into sandy or muddy substrates, where they burrow deep and grow gradually. Optimal conditions, including clean water, stable temperatures, and nutrient availability, are crucial for healthy development. Commercial farms monitor water quality and protect geoducks from predators to ensure steady growth. Harvesting usually occurs once they reach marketable size, around 1-2 pounds, which takes 5-7 years. Sustainable farming practices help maintain wild populations while meeting demand for this prized seafood.