Exhibit 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement Nos. 033-47073, 333-06061, 333-27561, 333-72715, 333-76697, 333-104490, 333-124503, 333-131466, 333-147397, 333-153925 and 333-154364 on Form S-8 and Registration Statement No. 333-163330 on Form S-3 of our reports dated November 23, 2011, relating to the consolidated financial statements and consolidated financial statement schedules of The Scotts Miracle-Gro Company and subsidiaries (the “Company”) and the effectiveness of the Company’s internal control over financial reporting appearing in the Company’s Annual Report on Form 10-K for the year ended September 30, 2011.

/s/ Deloitte & Touche LLP

Columbus, Ohio

November 23, 2011