Plantera

Plantera drops a Temple Key upon defeat, which opens the Jungle Temple.^[1] After all three mechanical bosses are defeated, Plantera can be fought in the Underground Jungle.^[1] Plantera has a maximum life of 30000 in Classic mode, 42000 in Expert mode, and 53550 in Master mode.^[6]

Quick Facts

Type: Boss
Environment: Underground Jungle
AI Type: Plantera AI
Damage: 50 100 150 (contact) [ 1 ] 44 76 114 (Seed) 54 96 144 (Poison Seed) 62 108 162 (Thorn Ball)
Max Life: 30000 42000 53550
Defense: 36 [ 1 ]
KB Resist: 100%
Debuff: Poisoned
Debuff tooltip: Slowly losing life
Chance: 50% 100% (Poison Seed)

Facts from the infobox of Plantera on the Terraria Wiki (wiki.gg, CC BY-NC-SA 4.0).

Summoning

Plantera's Bulbs spawn randomly in the Underground Jungle after the mechanical bosses are defeated and summon Plantera when destroyed.^[2]

Behavior

Three long vines allow Plantera to move through blocks by grappling onto solid foreground blocks.^[3]

Second form

At half health, Plantera enters a second form with increased speed, higher contact damage, lower defense, and eight Plantera's Tentacles that can be killed permanently.^[4] In the second form, Plantera releases floating pink Spore enemies that travel through blocks and can be destroyed in one hit.^[4]

Enraged behavior

Plantera becomes enraged if the player leaves the Underground Jungle, gaining double damage, double defense, and increased speed.^[5]

References

"Plantera" (opening section) - Terraria Wiki on wiki.gg, revision 1031902 terraria.wiki.gg
"Plantera", section "Summoning" - Terraria Wiki on wiki.gg, revision 1031902 terraria.wiki.gg
"Plantera", section "Behavior" - Terraria Wiki on wiki.gg, revision 1031902 terraria.wiki.gg
"Plantera", section "Second form" - Terraria Wiki on wiki.gg, revision 1031902 terraria.wiki.gg
"Plantera", section "Enraged behavior" - Terraria Wiki on wiki.gg, revision 1031902 terraria.wiki.gg
"Plantera" (infobox) - Terraria Wiki on wiki.gg, revision 1031902 terraria.wiki.gg

Text adapted from the Terraria Wiki on wiki.gg (CC BY-NC-SA 4.0), used by Freedom Games LLC, the operator of wiki.gg and Codexery. Page: Plantera (contributors). Codexery summarised the page: each numbered sentence above was checked against the wiki section it cites before publication, and this entry is shared under the same licence.