Deathweed

Deathweed was introduced in the 1.0.5 patch.

Deathweed appears as a short double stalk of corrupted grass with sickly green bulbs at the ends. It grows in The Corruption, on Ebonstone or corrupted grass, and can be cut by any weapon or tool. It can also be planted in Clay Pots by using Deathweed Seeds.

Deathweed only blooms during a Blood Moon, and this is the only time that it will drop 1-3 Deathweed Seeds when cut.