(Again, adding some plants to the otherwise barren landscape)
The Sulfur Bloom contained high concentration of explosive sulfur, be careful while harvesting-- found in Inferno Meadow Cavern

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The Sulfur Bloom grows a bulb of crystalline sulfur which bursts with force if disturbed, acting as an effective defensive mechanism against faunas from eating it. Careful harvest should be preformed to prevent bursting the crystal. Once the sulfur has been harvested, it will no longer bursts, and can then be safely used.