Latin Name: Petunia × hybrida ‘Prism Sunshine’ 

The Petunia ‘Single Grandiflora Prism Sunshine’ is a radiant, large-flowered annual prized for its vibrant yellow blooms and exceptional weather resistance. Growing 12–14 inches (30–35 cm) tall with a spread of 18–24 inches (45–60 cm), it’s ideal for beds, containers, and bold garden displays.

This grandiflora-type petunia features 3–4 inch (7–10 cm) single, trumpet-shaped flowers in a rare, pure sunshine-yellow hue, with a slight fragrance and velvety texture. Unlike older yellow petunias, it maintains color stability without fading in sun or heat, blooming spring to frost.

Thrives in full sun and well-draining soil, with moderate drought tolerance. Part of the Prism series, it’s bred for disease resistance and uniform habit, requiring minimal deadheading.

Perfect for monochromatic schemes or contrast plantings, pair with purple verbena, blue salvia, or white bacopa.