TriTunia™ Red Star Petunia

TriTunia™ Red Star is a mounding grandiflora petunia with red flowers. Syngenta lists 10–12 inches high and 12–14 inches wide, flowering from mid-spring through summer, and identifies this selection in the TriTunia series ([Syngenta’s exact product page](https://www.syngentaflowers.com/ams/product/flower/70065669)). ## Site and display Grow in full sun or part sun in a seasonal bed or container. Its compact mound suits packs, patio pots, and the front of annual beds; leave room for the listed 12–14 inch spread. Combine it with contrasting foliage or complementary annual flowers. ## Seasonal role Syngenta describes TriTunia as a vigorous grandiflora range selected for early flowering and relatively uniform timing. TriTunia™ Red Star remains a distinct named color selection within that range. ## Maintenance Check container moisture often during warm weather. Water the root zone when the mix begins to dry and allow excess to drain; RHS research using petunias found measured regular watering supported good growth without requiring pots to drip after watering ([RHS container-watering research](https://www.rhs.org.uk/science/gardening-in-a-changing-world/water-use-in-gardens/watering-containers)).