Terrarium definitely bugged.

I’m in a similar position. (Base PS4 7.01, JFO 1.05)

I got my final 3 seeds (Dreamwart, Royal Fuzz, Gillypod) after completing all other achievements. I didn’t realize the seeds don’t contribute to the 100% Explored status on the map, so I would leave areas after I’d found all the Chests and Secrets without collecting the seeds.

I wasn’t particularly pleased that I’d have to wait for the seeds to grow after completing all other tasks in the game,  but whatever. 

Since planting them, the three seeds have sprouted but have been stuck as little germinated whisps for days (and updates of the PS4 and game). 

I’ve run loops of the Tree of Life, I’ve visited all the planets, I’ve hit mediation points across the game, I’ve gained 5 additional (and useless) skill points, and I’ve elastic banded my joysticks together and run in circles for a few hours and nothing. 

According to someone from EA in another thread, growth isn’t tied to progression/ quest completion. Still, I started a new game and progressed through Bracco and the 1st visit you Bonago, as some people are recommending on Reddit. Nope. 

My save file is apparently “100%”, even though the seeds haven’t fully grown and the trophy hasn’t popped. 

At this point, I can’t see how this isn’t a bug. Plus, without a NG+, I can’t find the motivation to  go back and replay the whole thing. A patch to check exploration and accelerate growth once everything else is completed would be be appreciated. Even without the bug we’re experiencing, it’s a pretty anticlimactic to end your space opera by literally waiting around and watching grass grow...