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| Lava cactus grows in clumps and is usually the first plant to be able to grow on a lava field. New growth on the cacti is yellow, and as the cacti mature the color fades becoming paler - eventually becoming a gray or black color. |
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| Lava cactus grows in clumps and is usually the first plant to be able to grow on a lava field. New growth on the cacti is yellow, and as the cacti mature the color fades becoming paler - eventually becoming a gray or black color. |