Sobkowich Greenhouses Ltd.
Licensed Proven Winners Propagator
Petunia Supertunia - Vista Silverberry
Petunia Supertunia — Vista Silverberry
Full Name:
Supertunia® Vista Silverberry
Petunia hybrid
Petunia
Origination:  
Description: Vigorous, mounding plants are perfect landscape fillers, blooms all season, low maintenance.
Growing Tips: 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.

Exposure: Full sun.
Height: 16 - 24"
Spacing: 18 - 24"
Hardy temp: 30°F (-1°C)
Zone:  
Color:  
Use: Use in large combinations, containers and landscapes.
General care:  
Status:  
Awards:
2010 - Top Performer
-Cincinnati Zoo and Botanical Garden
2010 - Top Performers
-Mast Arboretum
2010 - Top Performer
-Powell Gardens
2010 - Very Good
-Devonian Botanic Garden
2010 - Very Good
-Massachusetts Horticultural Society at Elm Bank
2010 - Outstanding
-Disney
2009 - Best Petunia (Spreading)
-Colorado State University
2009 - Top Performer
-Oklahoma State University Botanical Gardens
2009 - Top Consumer Choice - Spring
-University of Florida - Fort Lauderdale
2009 - People's Pick
-Texas A & M - East Texas Bedding Plant Trial
2009 - Knock Your Socks Off
-University of Georgia
2009 - Outstanding
-Disney Winter Trials
2009 - Top Performer
-Mississippi State University
2009 - Best Performer
-Jardin Daniel A. Seguin
2009 - Best Performer
-Colorado State University
2009 - Best Performer
-Kansas State University
2009 - Best Performer
-Michigan State University
2009 - Top Performer - Growers
-Ohio State University - Columbus
2009 - Top Performer - Consumer
-Ohio State University - Columbus
2009 - Leader of the Pack - Early Season
-North Carolina State, JC Raulston Arboretum
2009 - Top Performer summer
-Michigan State University
2009 - Top Performer - Late Summer
-Michigan State University
2009 - Top Performer
-University Laval
2009 - Top Performer
-Jardin Daniel A. Seguin
2009 - Visitor Vote Top Performer
-Jardin Daniel A. Seguin
2009 - Best of Class
-Colorado State University
2009 - Best Friend Forever
-Virginia Tech
2009 - Top Performer
-Ohio State University Extension - Springfield
2009 - Top 20 in Ground
-Welby Gardens Trials
2009 - Top 10 in Ground Male Choice
-Welby Gardens Trials
2009 - Top Performer
-Kansas State University
2009 - Best Varieties
-Penn State
2009 - Top Performer
-Norfolk Botanical Garden
2009 - Top Performer
-University of Kentucky Arboretum
2009 - Top Performers
-Delaware Valley College, Henry Schmieder Arboretum
2009 - Top Five
-Colorado State University
2009 - Excellent Rating
-Boerner Botanical Garden
2009 - Top 20
-Cornell University
2009 - Best-Looking Flowers
-University of Delaware
2009 - Top 20
-Missouri Botanic Garden
2008 - Top Performer
-Longwood Gardens
2008 - Excellent Rating
-Boerner Botanical Garden
2008 - Top Performer
-National Arboretum
2008 - One of the Best
-Penn State
2008 - Top 10
-Cornell University
2008 - Top Performer
-Ohio State University Extension - Springfield
2008 - Best in Show
-Ohio State University - Columbus
2008 - Top 5
-Ohio State University - Columbus
2008 - Top Performer
-Erie Basin Marina
2008 - Staff Favorite
-Erie Basin Marina
2008 - Top Performer
-Maywood Estate
2008 - Best Overall Impression
-Oregon State University
2008 - Most Consumer Appeal
-Oregon State University
2008 - Top Performer in Ground
-Kansas State University
2008 - Top Performer in Containers
-Oregon State University
2008 - Best New Varieties
-University of Florida
2008 - Gold Medal
-Ohio State University Extension - Springfield
2008 - Leader of the Pack Summer
-North Carolina State, JC Raulston Arboretum
2008 - Leader of the Pack Summer - Late Season
-North Carolina State, JC Raulston Arboretum
2008 - Leader of the Pack Summer - Early Season
-North Carolina State, JC Raulston Arboretum
2008 - Excellent Rating
-Powell Gardens
2008 - Top Performer
-Michigan State University
2008 - Best Overall
-Cornell University
2008 - Top Performer
-Oklahoma State University Botanical Gardens
Program:  
   
Legal Details:
Patent (US): PPAF
Canadian PBR: PBRAF
Patent No. (US): 'USTUNI60-01M' US PP20,903; Can. PBR 3866
Patent Name:
Supertunia® Vista Silverberry 'USTUNI60-01M' US PP20,903; Can. PBR 3866
Registered Mark:  
Photo: Courtesy of Proven Winners

 

 
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