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Green String Lettuce

Ulva linza

Also called Doubled Ribbon Weed

Green String Lettuce
Photo: Gabriele Kothe-Heinrich, CC BY-SA 3.0

Ulva linza is a bright green seaweed (marine alga) that forms clusters of thin, frilled tubes or flat strips, usually on rocks, pebbles, docks and in rock pools in the intertidal zone. It is a sea alga, not a land plant, so it is not grown like a garden plant; the key is clean, aerated seawater with steady nutrients if kept in a marine aquarium.

Family
Ulvaceae (Ulv family)
Light
Bright indirect
Water
Keep it submerged in clean, saltwater with good circulation; it is not watered from above.
Soil
Not applicable; it attaches to rock or hard surfaces rather than soil.
Temperature
Tolerates a wide range of temperatures in the wild; keep it in typical cool to mild seawater temperatures.
How easy
Moderate
Safety
Not known to be toxic
Edible
Yes, some parts

About

Ulva linza is a green alga in the family Ulvaceae that can be found in British Isles.

Where it grows

They are littoral and sublittoral species which grow in muddy estuaries attached to pebbles or docks. They also can be found on rocks or in rock pools. Ulva linza can be found in the upper intertidal zone of seashores.

Uses

The species is edible and therefore can be used as food and in cosmetic products. Ulva linza is used as a model organism for biofouling in marine environments. It has been found on a variety of man-made structures including ships’ hulls.

Other Ulva plants

Gutweed · Sea lettuce · Ulva paschima · Sea lettuce

Text excerpted from the Wikipedia article Ulva linza by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

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