Can't grow plants after finishing story campain

Yeah I’m having the same issue on PS4 this is the only thing I haven’t finished in the game everything is at 100% and all trophies but this one. I have 3 plants that have at least came up but grow no further. I’ve spent over an hour on Zeffo running around and nothing has changed been to multiple other planets also for differing amount of time. The mushling and bleeding gut have been the same since before I finished the game a day or 2 ago the dream wort I got after finishing. Frustrating it’s stopping me from platinum.

I finally got them to grow and trophy popped. Went to dathomir and ran in a little way in stood in a safe area and turned the tv off  and just left the game for over an hour and a bit. Came back ran to the mantis and they were done. Thank  goodness it was time spent on planet. It was frustrating.

I'm having this same issue.

Playing on XBox One

After completing the campaign and all other achievements I needed two seeds for the terrarium.  I collected those, and I've been running around for about six hours trying various in game activities to get them to grow.  I've Traversed routes to and from the ship on various planets, killing enemies on the way.  Tried grinding for xp to accumulate skill points, tried idling, tried traveling between planets, resting, nothing has caused the seeds to grow.

Update, after reading some of the other posts, I traveled to Bogano and went and camped out in the Vault.  I left the game up for three hours.  After coming back one of the two seeds had sprouted.

The two plants I'm waiting on are the Featherfern and the Gillypod.  The Gillypod is the one that sprouted.

I've verified that all ten labels appear in terrarium.

@michelrespawn having the same issue expect all my plants have grown but no achivement has popped

The growing of plants seems to just be based on time and resting. I went and killed a bunch of stuff and hardly rested anywhere trying the get the last one to grow, once I started to rest however, it didn't take long. So I'd suggest to go to planets, do a few things and then meditate/rest and return to the mantis and check progress, then repeat on another planet.