Petunia Grandiflora represents a class of petunia cultivars distinguished by their exceptionally large, velvety blossoms and graceful, cascading growth habit, making them a centerpiece of warm-season ornamental plantings. These annuals develop soft, green, slightly sticky leaves on branching stems that spread outward to form low mounds or spill attractively over container edges. Their flowers—often 4–5 inches wide—are the highlight of the plant, presenting a rich palette that includes pure whites, deep purples, magentas, corals, blues, and an array of bicolors with star patterns, streaking, or intricate veining. Many cultivars offer ruffled, fringed, or doubled petals that enhance their luxurious appearance. While visually spectacular, Grandiflora petunias are somewhat delicate: their broad petals can be damaged by heavy rain, high winds, or extreme summer heat, so they perform best in sheltered beds, patio containers, and hanging baskets where conditions can be moderated. They thrive in full sun with well-drained, fertile soil and benefit from regular watering and fertilization to maintain steady blooming. Deadheading spent flowers helps prolong their display, allowing these showy petunias to produce waves of color from late spring into early fall. Cultivated for their classic garden charm and dramatic floral impact, Grandiflora petunias remain a favorite choice for gardeners seeking bold, elegant seasonal color.