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

What bosses do you need to defeat before Plantera?

Terraria Plantera Expert Guide

How to Summon Plantera in Terraria

Steam Community :: Guide :: A Guide To Summoning Bosses (PRE 1.3)

Resolved - [Mobile] Plantera Bug?

How To Beat Plantera in Terraria (Ultimate Guide) - Game Voyagers

How to Summon Plantera in Terraria

Mobile - Unable to beat mechanical bosses. Help please

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

Terraria bosses: how to summon and defeat them