Petunia Hybrid Success 360 Red Star

Petunia Hybrid Success 360 Red Star Seeds

(Grandiflora Petunia — F1 Hybrid)

Petunia hybrida Success 360 Red Star is part of the Success 360 series bred by Benary, one of the world’s most respected ornamental plant breeding companies. The Success 360 series is an impressive 360-degree show maker — a round-growing grandiflora petunia with a very uniform plant habit, early flowering, large and attractive flowers, and a wide range of colors including distinctive star shades. The series fills packs, pots, and baskets quickly, making it highly valued by both growers and home gardeners.

Red Star is one of the most visually striking entries in the series. This is a vigorous F1 hybrid petunia in the upright class, producing blooms approximately 7 to 8 cm across. It delivers many flowers for an upright petunia and carries the vigor to perform well in baskets in addition to standard pot and landscape use. The bicolor Red Star pattern — saturated red petals with a sharp white central star — creates a high-contrast flower that commands attention in any planting scheme.

Petunia is a facultative long-day plant, meaning longer day length and higher light intensity both promote flowering. This characteristic is well-suited to Kuwait’s autumn-to-spring growing season, where the combination of bright, high-intensity sunlight and day lengths of 11 to 14 hours through the cool months provides ideal conditions for rapid bud initiation and sustained continuous flowering.

Success 360 Red Star carries the characteristics of a grandiflora single petunia: a mounded and upright plant habit, medium water requirements, low maintenance, and an extended blooming season from late winter through spring under Gulf conditions. The compact, self-filling mounded form means plants look presentable and full of all angles at the point of sale and throughout the garden season — the defining quality that gives the 360 series its name.

Variety Details

• Petunia x hybrida F1 Success 360 Red Star is bred by Benary and classified as a round-growing grandiflora petunia.
• It delivers uniform, early flowering plants with large, attractive flowers and is available only as pelleted seed for precision sowing.
• The Success 360 series contain 13 color options ranging across solid shades and star-patterned bicolor, all at a plant height of 30 to 35 cm.

Key Features

• F1 grandiflora petunia from Benary.
• Bold red and white bicolor star-patterned flower. 360-degree uniform mounded plant habit.
• Early flowering in 9 to 13 weeks from sowing.
• Large attractive blooms 7 to 8 cm across.
• Compact height of 33 cm, spread 28 cm. Fast filling of packs, pots, and hanging baskets..
• Suitable for pots, packs, hanging baskets, mixed containers, and landscape. Ideal for Gulf cool-season gardens from October through April.

• Plant Information

• Family: Solanaceae.
• Botanical name: Petunia x hybrida F1.
• Breeder: Benary.
• Type: Annual.
• Height: 33 cm.
• Width: 28 cm.
• Flower: Large grandiflora single, 7 to 8 cm across, red with white star center.
• Plant habit: Mounded, upright, 360-degree fill.
• Exposure: Full sun.
• Water: Medium — maintain consistent moisture without waterlogging.
• pH preference: 5.5 to 5.8.

• Seed Germination

• Radicle emergence is expected in 3 to 5 days.
• Begin by watering to saturation (level 5), applying enough water to help dissolve the pelleted seed coating.
• Do not allow the seed to dry back before moving to the germination environment.
• Maintain saturation for 3 to 4 days or until radicle emergence.
• On day 5 reduce media moisture to wet (level 4) for the next 5 to 6 days.
• On day 10 reduce moisture further to medium (level 2), alternating between wet and medium between waterings.
• Humidity should be kept at 95 to 100 percent until day 5, then reduced to 40 to 60 percent.
• Reducing humidity after radicle emergence helps prevent seedling stretching.
• Light is necessary for germination — provide 100 to 1,000 lux in the germination chamber.
• Sow one pellet per plug cell.
• Do not cover seeds as light is required for germination.
• Temperature during germination: 22 to 24 degrees Celsius until radicle emergence, then reduce to 20 to 21 degrees Celsius on day 5.
• Once cotyledons have fully expanded, reduce further to 18 to 20 degrees Celsius.

• Growing Tips

• After transplanting, maintain night temperatures above 13 degrees Celsius for the first 3 to 4 weeks to initiate flower bud development.
• Night temperatures can be lowered further to around 10 degrees Celsius to encourage basal branching and compactness, producing a higher quality plant.
• An average daily temperature of 19 degrees Celsius will give the fastest crop finish.
• During the plug bulking and flower initiation stage, petunias are facultative long-day plants — longer day length and higher light intensity will promote earlier flowering.
• Provide a minimum day length of 11.5 hours.
• To initiate flowering under short days, extend day length to 13.5 to 14 hours.
• Temperature during this phase should be maintained at 18 to 20 degrees Celsius, then reduced to 15 to 18 degrees Celsius once the plant reaches the 3 to 5 true leaf stage.
• Maintain media pH between 5.5 and 5.8 throughout production.
• Keeping the pH below 6.0 helps keep boron and iron available to the plant.
• Begin feeding with 50 ppm nitrogen after initial germination at day 5 to 6, then increase to 100 to 175 ppm nitrogen for established seedlings.
• Monitor boron carefully — low boron causes tip abortion..
• Under the bright, high-light conditions of the Gulf growing season, apply an ammonium-based fertilizer to support vigorous shoot growth and continuous flowering.

• Gulf Planting Season

• Sow indoors in protected nursery conditions: mid-August through October.
• Transplant to containers, hanging baskets, or garden beds: October through November.
• Expected flowering: November through March, depending on sowing time and conditions.
• Summer cultivation outdoors is not suitable.
• Petunia x hybrida requires temperatures between 15 and 24 degrees Celsius for optimal growth and flowering.
• Protect from sustained temperatures above 35 degrees Celsius.

• Garden and Floral Uses

• Success 360 Red Star is recommended for use in hanging baskets, landscape beds, packs, pots, and mixed containers.
• The bicolor red and white star pattern makes it a natural choice for bold seasonal displays, festive container combinations, and high-visibility landscape plantings.
• It pairs effectively with white, silver, or deep burgundy companions in mixed container designs.
• The compact, uniform mounded habit means no pinching or deadheading is required to maintain the plant’s shape, making it a genuinely low-maintenance option for Gulf cool-season gardens.