So I killed all mechanical bosses but the plantera has not spawned

Plantera's Bulb - Terraria Wiki

Some questions about these two bosses : r/Terraria

Terraria bosses: how to summon and defeat them

Resolved - [Mobile] Plantera bulbs doesn't spawn

How to kill pre-hard mode bosses in Terraria - Quora

Complete Order To Defeat All Terraria Bosses

Terraria bosses list and guide

Please Help, I can not find Plantera bulb anywhere , I have defeated all three mechanical bosses, and have explored most of my jungle. : r/Terraria

Ive been looking for plantera for 3hrs is there any trick to finding her? : r/Terraria

I still haven't found an Plantera Bulb.(With Spelunker)(I've defeated all the mechanical bosses) : r/Terraria

Bosses in Terraria - Terraria Guide - IGN