Harry Potter: "They're very valuable aren't they?"
Horace Slughorn: "Ten Galleons a leaf to the right buyer."
Harry Potter catches Horace Slughorn stealing Tentacula leaves[src]

The leaves of the Venomous Tentacula plant are very valuable. Horace Slughorn was known on at least one occasion to steal them from the Hogwarts greenhouses[1]. Leaves from an unhealthy specimen would not fetch very much money, but an experienced potioneer could brew some dragon dung fertiliser that would make the Tentacula healthy again[2].


Notes and references

CS C6 This article about a plant is a stub. You can help by expanding it.