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Gracilaria

Gracilaria
Photo: Emoody26 at English Wikipedia, CC BY 3.0

Gracilaria is a genus of red seaweeds (algae), not a flowering plant, grown commercially for agar and eaten as food. Warm-water species are cultivated in ponds and coastal sites, and they need warm seawater above 10 °C.

Family
Gracilariaceae (Gracilari family)
Light
Bright indirect
Water
Grown submerged in seawater or brackish water; it needs clean, moving water rather than watering by hand.
Soil
Not applicable; grows attached to rock or floating in ponds and lagoons, or in sandy or muddy sediment.
Temperature
Warm water, roughly 20–30 °C; cannot tolerate temperatures below 10 °C.
How easy
Moderate
Safety
Not known to be toxic
Edible
Yes, some parts

About

Gracilaria, also known as Irish moss or ogonori, is a genus of red algae in the family Gracilariaceae. It is notable for its economic importance as an agarophyte meaning that it is used to make agar, as well as its use as a food for humans and various species of shellfish. Various species in the genus are cultivated among Asia, South America, Africa and Oceania. They produce over 90% of the world's agar.

Where it grows

Gracilaria are found in warm waters throughout the world, though they also occur seasonally in temperate waters. It can not tolerate temperatures below 10 °C (50 °F). Gracilaria are found in all oceans except the Arctic. Their center of diversity is the Western Pacific, where they have been traditionally cultivated as a source of agar.

Uses

Gracilaria is used as a food in Filipino, Hawaiian, Japanese, Korean and Sri Lankan cuisines. In Japanese cuisine, it is called ogonori or ogo, and used to make tokoroten. In the Philippines, it is called gulaman and used to make a gelatin substitute. In Jamaica, it is known as Irish moss. In Korea, it is known as kkosiraegi.

Other Gracilaria plants

Gracilaria parvispora

Text excerpted from the Wikipedia article Gracilaria 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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