Not only does staking tall and lanky plants prevent their stems ... Taller varieties of nonbranching, also called single stem, sunflowers like the 'Procut' and 'Sunrich' series are the best ...

Grown atop thick, “hairy,” sturdy stems, some sunflower varieties can reach 10 feet tall—or taller! While the black- or brown-centered, yellow-petaled sunflower is perhaps the most familiar ...