Some Super Plants remain unknown?

Hey team!
I wonder if this is normal of it’s a glitch, that 2 of the super plants in specific spots remain unknown. To better illustrate what I mean, I’ll attach a picture.

As you can see there, 2 plants remain unknown and it happens starting from the Sea to Music Realm. All the same exact spot. I’m currently in Candy Land, so not sure if it will continue doing the same thing or not. Is there any special requirement to ‘unlock’ those plants or something?

Hi Zenitshu,

This is actually normal. Super plants pieces is found randomly in resident quests. You can increase the chance getting rare pieces with Treasure Chests in the Plant Store.