 Shares of Scotts Miracle-Gro Co. SMG, -4.84 dove 3.8 toward a near two-year low in premarket trading Tuesday, after the lawn care company, with its hands in the cannabis business, warned of lower-than-expected full-year profit give a surprise anticipated decline in Hawthorne sales. The company said it now expects fiscal 2022 sales for its Hawthorne business to decline 15 to 25 from a year ago, compared with previously provided guidance for growth of 8 to 12. 