Broadleaf Kelp (Laminaria Longricus), Wet, Live, Whole Leaf, 1 Pint Volume

from $80.00
Quantity (1 Pint Volume):

Broad Leaf Kelp (Laminaria longicruris)

Our Broad Leaf Kelp (Laminaria longicruris) is sustainably hand-harvested from the cold, nutrient-rich waters of the Gulf of Maine. This large, leathery brown seaweed grows subtidally in areas with strong tidal flow, producing long, ribbon-like fronds that can reach up to eight feet. Valued for its versatility, Broad Leaf Kelp is used in traditional foods, natural wellness products, and marine biology studies alike. Its high mineral content—including iodine, calcium, magnesium, and potassium—makes it a powerhouse for nutrition and skin health. Each plant is collected fresh and air-dried or shipped wet, depending on your order needs.

Key Facts:
Common name: Broad leaf kelp
Scientific name: Laminaria longicruris
Locations: Sub-tidal on shallow muddy bottoms with good water flow
Seasonality: Available sporadically on full moon tides
Colors: Leathery brown
Size: 2–3 lb plants, 4’–8’+ fronds
Collected: By hand
Quantity: Sold by the plant or by the pound
Note: Natural variations in size, color, and appearance from photos should be expected.

Broad Leaf Kelp (Laminaria longicruris)

Our Broad Leaf Kelp (Laminaria longicruris) is sustainably hand-harvested from the cold, nutrient-rich waters of the Gulf of Maine. This large, leathery brown seaweed grows subtidally in areas with strong tidal flow, producing long, ribbon-like fronds that can reach up to eight feet. Valued for its versatility, Broad Leaf Kelp is used in traditional foods, natural wellness products, and marine biology studies alike. Its high mineral content—including iodine, calcium, magnesium, and potassium—makes it a powerhouse for nutrition and skin health. Each plant is collected fresh and air-dried or shipped wet, depending on your order needs.

Key Facts:
Common name: Broad leaf kelp
Scientific name: Laminaria longicruris
Locations: Sub-tidal on shallow muddy bottoms with good water flow
Seasonality: Available sporadically on full moon tides
Colors: Leathery brown
Size: 2–3 lb plants, 4’–8’+ fronds
Collected: By hand
Quantity: Sold by the plant or by the pound
Note: Natural variations in size, color, and appearance from photos should be expected.

Tidepool Tim says,  “Broad leaf kelp looks like a dinosaur kelp plant. They are big, thick, and resemble old weathered horse harness leather. We can find these lodged in the mid-tidal areas as they have torn loose from the seafloor and drifted up the water column.  A close look at the stipe and frond of these specimens will reveal years of growth and evidence of many fouling species living on the plant itself. The blade is very wide - usually 16" or more. The holdfast is very rugged and branching with lots of other creatures lodged in the structure.  Small rocks and large horse mussels seem to serve as the anchor for this marine algae.”

 

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