Most helpful critical review
With Cooler Temps - A Bad Experience.
on March 15, 2015
I found these didn't work very well for me. I put them out ahead of a 2 week plus vacation, following the instructions carefully. I fully watered the plants and got the soil wet before putting them down, being careful to make sure that the exposed product touched the soil and not the air, using multiple packs for large diameter pots and so on.
When I got back, a few plants had died and the rest were dry and stressed. It wasn't hard to see why - the bulk of the product was still in the plastic bag, it hadn't dissolved into the soil hardly at all. I bought a big box of these and put them all over - I have a lot of house plants. So it wasn't an isolated thing - it happened everywhere.
The only thing I can think of is that I was away in the height of winter and we set the heat back slightly since we weren't going to be there. No, that wasn't what hurt the plants - it was only set back to the high 50's and I could feel how dry the pots were when I got home. Maybe it has to be hotter for the stuff to dissolve at the correct rate? Or maybe the relatively low humidity in the winter air caused it?
I don't really know, but we are coming up on 12 weeks since they were put in - and they still aren't all dissolved. I suppose some of that is because I am no longer trusting them to actually water anything and am watering the plants myself, but the rate these dissolve into water has been positively glacial for me.
Maybe these work better in warmer temperatures, but I'd be very cautious about using them in a cooler location. Either that or the positive reviews here are bogus and you are currently reading the only review from a real person on here. I don't know. The only thing I do know is that I will not be buying these again.