Sugar kelp, or Saccharina latissima, is a brown marine algae native to Rhode Island waters. Like other marine algae, sugar kelp is not a plant and does not have roots, but rather a holdfast that stations it to the ground in the wild. As with all kelp, it is ecologically vital, being a primary producer and offers food and structure for other marine life.
Sugar kelp not only grows wild in Rhode Island, but it can be cultivated, or grown by people, through the practice of aquaculture or what we like to call “sea gardening”. Sugar kelp is unique to other cultured species in Rhode Island like shellfish, in that it is a winter-only crop, with planting happening in the fall and harvest in the spring. During these few months, sugar kelp can go from seedling to nearly 15 feet. Imagine if our backyard gardens grew that fast?!