Shock Wave® Denim Spreading Petunia

Shock Wave® Denim is a spreading petunia whose flower tones change with light and temperature. PanAmerican identifies the exact PAS760721 selection and describes flowers as dark blue-purple in cool or low-light conditions, shifting to blue-lavender-silver in high light and heat ([plant details](https://www.panamseed.com/products/048605220001483/spreading-petunia-shock-wave-denim/)). ## Placement and bloom Plant Denim in full sun in a basket, container, or mixed combo, with room for its spreading branches. PanAmerican lists a mounded, spreading habit, a height of 7–10 inches, a width of 20–30 inches, and spring-through-late-summer bloom. Its changing color adds contrast to plantings with white or pink flowers. ## Growing notes Petunias grow best in full sun and moist, well-drained soil; very heavy soil can limit bloom. Occasional pinching late in the season can help keep plants compact and flowering ([Illinois Extension petunia guide](https://extension.illinois.edu/flowers/petunia)). ## Maintenance Check the moisture in baskets and pots regularly because they dry more quickly than open beds. Water thoroughly when needed, then let extra water drain. Guide long stems back into the display or trim them lightly when they crowd nearby plants. Remove faded flowers as desired.