Prior to the start of the hatchery season, it is important to identify where you will collect your sorus tissue. Generally, sorus blades are collected in the fall to start the hatchery process. The exact timing of sorus formation depends on the kelp bed and the water conditions. Normally, sorus will start to develop as temperature, light intensity, and the number of hours of daylight all begin to drop. Each kelp bed is different, and you may have to check the bed multiple times before finding ripe sorus. On the East Coast, this tends to occur in October. In Alaska, it could happen as soon as late August.

As you look ahead to the hatchery season, there are some key logistics you’ll need to arrange to ensure sorus collection is successful. The first step is to identify several wild kelp beds that appear to be good candidates for sorus collection come fall. Start this process early! 

To begin your search, pull out a marine chart, and narrow in on a few locations that look like good candidates based on the surrounding environment. Kelp is found below the low tide mark, (in the subtidal zone) and attaches best to rocky substrate, though the habitat and range will vary by species and location. In Alaska, sugar kelp tends to prefer muddy or sandy bottom types, whereas Alaria and bull kelp like more exposed locations with stronger wave action. On the East Coast, sugar kelp can be found in rocky-bottomed areas.

Some regions, such as the Long Island Sound, have undergone detailed surveys or have been mapped in research efforts¹. In Alaska, the Alaska Ocean Observing System Mariculture Map lists detailed geospatial data, including kelp beds. Check for online mapping resources in your area that identify kelp beds. This can be a useful starting point for guiding your search.