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Superbena® Cobalt Verbena hybrid

Flower Season
  • Spring
  • Summer
  • Fall
Mature Size
12" 2'6" 30cm 76cm
Height: 6" - 12"
Spread: 18" - 2'6"
Height: 15cm - 30cm
Spread: 46cm - 76cm
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  • Details

    6 - 12 Inches
    10 - 14 Inches
    18 - 30 Inches
    15cm - 30cm
    25cm - 36cm
    46cm - 76cm


    Superbena verbena have great vigor, awesome branching and wonderful summer performance. The deep blue-purple flowers are clustered in large umbels that cover the deep green foliage. 

    Award Winner
    Continuous Bloom or Rebloomer
    Disease Resistant
    Long Blooming
    Fall Interest
    Heat Tolerant
    Deadheading Not Necessary


    Plant Type: 
    Height Category: 
    Garden Height: 
    6 - 12 Inches 15cm - 30cm
    Trails Up To: 
    24 Inches 61cm
    10 - 14 Inches 25cm - 36cm
    18 - 30 Inches 46cm - 76cm
    Flower Colors: 
    Flower Colors: 
    Flower Shade: 
    Dark Blue 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 Frost
    Hardiness Zones: 
    8a, 8b, 9a, 9b, 10a, 10b, 11a, 11b
    Water Category: 
    Soil Fertility Requirement: 
    Average Soil
    Border Plant
    Mass Planting
    Uses Notes: 

    Superbena are great in landscape beds, but are also wonderful in patio planters and hanging baskets by themselves. They also make a wonderful spiller in combination recipes.

    Maintenance Notes: 

    These are heat tolerant plants, that aren't particularly fussy. They 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. The plants aren't particularly heavy feeders, so 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 beds. In general, containers need to be fed more than landscape plants. A second application of a controlled release fertilizer should be applied about every two months to container plants or you can regularly apply water soluble fertilizer starting about two months after the containers are planted. These extra applications of plant food can really make 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.

    Superbena® Cobalt Verbena hybrid 'WNVESBIB' USPP 34,099, Can 6,971
  • 3 Reviews

    Browse reviews from people who have grown this plant.
    • I LOVE this plant! I grow verbena in containers every year but have never had a verbena be so healthy and so large and so beautiful! The color is a rich purple, the flowers are like round golf balls and when they fade they have a silvery tone to it. My containers are spectacular this year and it is thanks to Imperial Blue verbena.

      Denise Wilson
      , Ontario
      , Canada
      , 1 year ago
    • amazing colour and shape easy to grow

      , Ohio
      , United States
      , 1 year ago
    • First time in a large self-watering planter. Everything I planted is healthy and beautiful. The superverbena is amazing. Love the color.

      Sandra Avery
      , 2 years ago
  • 11 Awards

    Award Year Award Plant Trial
    2022 Top Performer - In Ground South Dakota State - McCrory Gardens
    2021 Top Performer University of Florida - Fort Lauderdale
    2021 Top Performer Oklahoma State University Botanical Gardens
    2021 Top Performer University of Tennessee - Knoxville
    2021 Top Performer - Hanging Basket University of Minnesota - Grand Rapids
    2021 Perfect Score Michigan State University
    2021 Top Performer University of Minnesota - Morris
    2021 Top Performer Penn State
    2021 Top 10 scores in beds North Carolina State, JC Raulston Arboretum
    2021 Top Performer in Ground Annuals South Dakota State - McCrory Gardens
  • 11 More colors

  • 7 Recipes

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