I am a gardener and got an email about a $10 rebate on your purchase a 2 lb jar of Osmocote. Looks like it includes Osmocote Plus. I believe Home Depot sells it for $10, which would make the item free after rebate. Must purchase by June 30, 2014.
This might be the motivation for me to make my own root tabs.
Got mine from Home depot for $8.58 after tax. Using my neighbors house for one of the rebates. ha ha ha. I think I'm going to use the ice cube trick with these. I just added about 8 flourish root tabs last weekend, so might have to wait a while to add these.