Get this Scotts Smart-Release 2 lb. Indoor and Outdoor Plant Food, which drops from $9.98 to $7.98 at HomeDepot.com with free in-store pickup. Then, send of this $10 Mail-In Rebate, dropping the price to $0! This rebate is valid for purchases made through 6/30/2014, but is limited to the first 20,000 prints so you'll want to print it now. This plant food provides nutrients to keep your garden or indoor plants healthy for up to four months. Sales tax is charged in most states.