I got an entire bottle of Osmocote Plus for (if I remember correctly) $1.98 plus tax. At the recommended application rate, it will last...
a while.
On the other hand, it might be a pretty shitty product. Got one of those Train Wreck Auto plants in a 5.5-liter wastebasket perlite hempy, and it has issues. Maybe I should have picked up a pH meter at least once, LMAO?
I guess it'll last a lot longer if I never open the bottle again. But, seriously, I gave some to the friend of mine who grew a Dark Devil Auto in a five-gallon GeoPot and told him to use HALF the recommended dose, thinking... you know...
autoflower, plus he'd have been able to supplement midway through the flowering phase, possibly before that. He never added anything other than tap water, lol. Only harvested a tick over two ounces. The plant looked healthy the entire time, seedling to harvest, though. Maybe that's not all that abysmal a harvest for that strain? I have no idea.
I'd yank the TWA out of its current setup and repot if I thought (a) I would be able to get all the Osmocote Plus and (b) it wouldn't be a traumatic experience (and for the plant, too
).