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Supertunia® Indigo Charm Petunia hybrid

  • Hardy Zones
    • 10 - 11
  • Exposure
    • Part Sun to Sun
  • Season
    • Spring
    • Summer
    • Fall
  • Mature Size
    • 8 - 14 Inches
Proven Winners® Annuals
Supertunia® Indigo Charm Petunia hybrid
Part Sun to Sun 8 - 14


These COLORS never fade.

Small deep purple-blue flowers.

Award Winner
Continuous Bloom or Rebloomer
Long Blooming
Heat Tolerant
Deadheading Not Necessary
Drought Tolerant


Plant Type: 
Height Category: 
Garden Height: 
8 - 14 Inches
Trails Up To: 
24 Inches
12 - 18 Inches
18 - 24 Inches
Flower Colors: 
Flower Shade: 
Foliage Colors: 
Foliage Shade: 
Mounding Trailing
Container Role: 

Plant Needs

Light Requirement: 
Part Sun to Sun
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 combinations planters.

Maintenance Notes: 

Self-cleaning, no deadheading necessary, this is not necessarily true of all Petunias.

Fertilize often for best summer performance.

Late July and August is when plants should be at their best, but there is only one problem: The plants have run out of energy and the gardeners realize it too late to help the plants recover. This is especially true in raised containers and hanging baskets. Here is the best way to keep your Petunias in the Super category.

1. When you buy them in the spring, buy a slow release fertilizer to top dress the basket or container. If you plant your own basket, incorporate some of the slow release fertilizer in the soil as you plant. Follow the package directions.

2. In May fertilize with a water-soluble fertilizer once every two weeks. Mix up the fertilizer and water the plants just like you would if you were using clear water. It normally takes a good half of gallon of water to really water a 10" wide basket or raised container.

3. In June as the weather starts to get warm to hot, fertilize weekly, again with a good soaking. If the weather turns really hot as it sometimes does in Late June you may need to fertilize every third watering. By now the Supertunia is really growing and starting to tumble down from the basket or fill out across the flowerbed.

4. July is when the cutting back occurs. Around the 4th of July, (after your big party) get some of the slow release fertilizer that you bought in spring and re-apply across the top of the planter. At the same time, trim back some of the longer branches just enough to bring the plant back in line with the bottom of the pot or basket. Don't remove too much at the maximum cut back 20% of the branches or 1 in five shoots. You can also just give it a general light trim. Your plant will be out of flower for a few days, but will come back stronger than ever. By now with July's heat you should be watering at least every other day and begin to fertilize every other watering. I know it sounds like a lot, but if you want a plant to grow like an elephant and be the most it can be, you got to feed it like an elephant!

5. August is, hot, humid, & sometimes with monsoons. Keep up the water and fertilizing, and again, if the plant starts to look straggly remove a few more branches but never more than 20% or give it a general trim as before.

6. It is September and the plants should still look good, start to back off the watering and the feed, but shape the basket with the last pruning of the season.

I know it sounds like a lot of work, but it really is a labor of love. I fertilize my baskets and my garden every time I water, and I water daily from mid July through August. I recently invested in the WaterWise irrigation system and let me tell you it really works. You will find that your Supertunias, along with all the rest of your plants will keep looking fantastic through September and perhaps with the luck of a gardener and a late frost maybe even into October.

The Best Petunia. Period.®

Supertunia® Indigo Charm Petunia hybrid 'USTUN29801' USPP 22,883, Can 4,351
  • First time buyer May 2017 and quickly planted in large pot with Gold Carpet and Morning Star.
    Early returns are most promising, as with others in the Charm series, Indigo is a sturdy, robust plant with vigorous blooms.
    Outstanding color and the smaller blooms retain their shape better than the larger petunia varieties.

    Definitely a pure purple but not dark like Royal Velvet Supertunia.
    More a mounding plant than a trailer for now but a couple of branches on mine have begun to stretch a bit.

    Prolific bloomer already and I look forward to seeing it grow throughout the harsh Washington summer.

    Matthew Lamb,
    Frederick, MD

    Above Average Superior performance, among my favorites, would recommend to others.
    Matthew Lamb
    United States
    1 year ago
  • I tried this plant last year in a hanging basket with one Flambe (yellow strawflower) plant for contrast. I absolutely love the color of the flower and it does not fade. I trimmed it a few times throughout the season just to keep it more rounded looking. It was extremely heat and sun tolerant (with plenty of water of course). It is a well branching plant. I will definately buy more this year. Hopefully I won't have trouble finding them locally as last year I only found in one nursery near by my house.

    Outstanding My favorite plant, I recommend to others all the time and explain the reasons why I like it so much.
    United States
    3 years ago
  • Just follow directions and neighboors will complement you.

    Outstanding My favorite plant, I recommend to others all the time and explain the reasons why I like it so much.
    United States
    7 years ago
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    Marginally Adequate Performed below expectations but may be willing to try again.
    United States
    7 years ago
  • 6t0mGJ <a href="">myddvfozawae</a>, [url=]avnldruddlwg[/url], [link=]ipvjdqzqcfnk[/link],

    Marginally Adequate Performed below expectations but may be willing to try again.
    United States
    7 years ago
  • Outstanding My favorite plant, I recommend to others all the time and explain the reasons why I like it so much.
    Russell Studebaker
    United States
    7 years ago
Award Year Award Plant Trial
2013 Top Performer Erie Basin Marina
2012 Top Performer University of Tennessee - Knoxville
2012 Top Perfomer University of Wisconsin
2012 Gold Medal Winner Champaign County Illinois Master Gardener Idea Garden
2012 Top Performer University of Minnesota - Morris
2012 Top Performer in Containers University of Minnesota - Grand Rapids
2012 Top Performer Ohio State University Extension - Springfield
2012 Top Perfomer Texas A & M - East Texas Bedding Plant Trial
2012 Top Performer Massachusetts Horticultural Society at Elm Bank
2012 Top Performer Oklahoma State University Botanical Gardens
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