Buy the 2015 Old Farmer's Almanac!
To support the height of theTo support the height of the sunflower the roots grow very deep and spread out under the soil. Some sunflower roots grow 4 to 5 feet deep.

2015 Special Edition Garden GuideCooking Fresh with The Old Farmer's AlmanacThe Almanac Monthly Digital MagazineWhat the heck is a Garden Hod?