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Supertunia® Royal Magenta® Petunia hybrid

Flower Season
  • Spring
  • Summer
  • Fall
Mature Size
12" 2' 30cm 61cm
Height: 4" - 12"
Spread: 18" - 2'
Height: 10cm - 30cm
Spread: 46cm - 61cm
Top Seller
  • Details

    4 - 12 Inches
    12 - 24 Inches
    18 - 24 Inches
    10cm - 30cm
    30cm - 61cm
    46cm - 61cm


    Supertunia petunias are vigorous with slightly mounded habits that function as both fillers and spillers in containers.  THey are also excellent landscape plants, best suited to be placed near the front of beds.  They have medium to large sized flowers.

    Best Seller
    Continuous Bloom or Rebloomer
    Long Blooming
    Fall Interest
    Heat Tolerant
    Deadheading Not Necessary


    Plant Type: 
    Height Category: 
    Garden Height: 
    4 - 12 Inches 10cm - 30cm
    Trails Up To: 
    36 Inches 91cm
    12 - 24 Inches 30cm - 61cm
    18 - 24 Inches 46cm - 61cm
    Flower Colors: 
    Flower Shade: 
    Magenta Purple
    Foliage Colors: 
    Foliage Shade: 
    Mounding Trailing
    Container Role: 

    Plant Needs

    Light Requirement: 
    Part Sun to Sun

    The optimum amount of sun or shade each plant needs to thrive: Full Sun (6+ hours), Part Sun (4-6 hours), Full Shade (up to 4 hours).

    Maintenance Category: 
    Bloom Time: 
    Planting To Hard Frost
    Hardiness Zones: 
    10a, 10b, 11a, 11b
    Water Category: 
    Soil Fertility Requirement: 
    Average Soil
    Edging Plant
    Mass Planting
    Uses Notes: 

    Use in hanging baskets, window boxes, landscaping and combination planters.

    Maintenance Notes: 

    These are heat tolerant plants, that aren't particularly fussy and need little routine maintenance. They will perform best if an application of controlled release fertilizer is included at the time of planting. This applies to both landscape and container plantings. Supertunias are heavy feeders, but a single dose is usually sufficient for landscape beds in most climates. If you have a very long season, a second application of controlled release plant food should be considered for landscape plantings. In general, containers need to be fed more than landscape plants. Supertunias in containers will need to be fed more regularly to be their absolute best. A second application of a controlled release fertilizer can be applied about every two months to container plants, which will help. However, for the very best performance I find regularly applying water soluble fertilizer starting about two months after the containers are planted gives the best results.  These extra applications of plant food really makes a difference in performance through the summer.

    If your plant begins to look open or a bit tired, an allover trim can be beneficial.  Use a sharp pair of scissors or pruning shears to trim back up to 1/3 of the volume of the plant. I pair any trim with a dose of water soluble fertilizer to provide instant energy to help kickstart new growth, branching and flowering. Your plant will take a week to recover from the trim, but the end result is a fuller plant with more blooms going forward. You may repeat the trim as needed through the season.

    Supertunia® Royal Magenta® Petunia hybrid 'INPETROYMA' USPP 29,811, Can 6,045
  • 6 Reviews

    Browse reviews from people who have grown this plant.
    • I have been growing Royal Magenta’s in a 5ft tall 18” basket and they trail to within 6 in of the ground with full 360deg coverage. Full sun. People from several neighborhoods come to see them. Going to double my planters this year.

      , Wisconsin
      , United States
      , 1 year ago
    • I planted two of the Royal Magenta petunias in a 12" hanging pot in a sunny spot. I watered and fertilized regularly. They started out nice, but by mid-August were looking leggy and ugly. I hadn't trimmed them because they weren't particularly long, not even covering the sides of the basket, but I gave them a 'haircut'. It didn't help; the plants continued to deteriorate. I didn't see any bugs, so I don't know what the problem was. I have grown supertunias before, generally with good results, so these were disappointing. I won't be growing Royal Magenta again.

      Karen Muse
      , Michigan
      , United States
      , 1 year ago
    • I had used Royal Velvet in 2021 and wanted to try Royal Magenta this season. I mixed the two with Supertunia Honey and. Pinpoint Blue false cypress in the urns flanking my front porch. I was very impressed and will be using Royal Magenta again. Loved the vibrant softness of the flowers and it intermingled wonderfully with the other plants. Two thumbs up!

      Lauren L
      , Indiana
      , United States
      , 1 year ago
    • Have them in a bed by the garage/driveway this year - beautiful!

      Elizabeth Long
      , Ohio
      , United States
      , 6 years ago
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