THE LEARNING GARDEN
PANSY / VIOLA
CULTIVAR TRIAL 2002 - 03

Monica Kmetz-Gonzalez and Dr. Claudio Pasian
OSU Department of Horticulture and Crop Science


Trial Site Location:
This trial marked the third year for our Fall Pansy and Viola Trials, and the first year it was conducted in-ground. This new site is located in our developing Learning Gardens area just north and west of our Departmental buildings on the Columbus campus. Our previous trials had been conducted in raised beds. We feel our new in-ground site more directly mimics the "real world" growing areas of the homeowner, city and commercial sites, etc. The trial site receives shade most of the morning, followed by approximately 6-8 hours of full sun. The area, formerly in grass, was amended with Kurtz Brothers Professional Blend. Pre-plant fertilization with 300 ppm N 20-10-20 was performed via liquid feed on 8/27 and 9/9/02.

Plant Material:
A total of 83 cultivars were evaluated. Of this, 63 were Pansy (including 6 Panola) and 20 were Viola. Seed from the participating breeders and distributors was grown on again for us by Mr. Bob Barnitz of Bob's Market & Greenhouse, Mason, WV.

Procedure:
Plants in 2 1/4" cell paks were received in our greenhouses on 9/11/02. On 9/12, a Rootshield drench was applied to the plants. Transplanting to the in-ground site occurred on 9/17. Nine plants per cultivar were outplanted. Spacing was on 1 foot centers. No mulch was used. Post-planting fertilization with 200 ppm N 20-10-20 via Dosatron occurred on 9/25, 10/9, and 10/21. There were no pest or disease problems.

Ratings were based on a 1 to 5 scale (1 = Not Acceptable, 5 = Exceptional). Plants were evaluated for the following characteristics:

  • Flower Quality: Aesthetics, color, health and apperance
  • Flower Number: 1 = Low, 5 = Very floriferous
  • Foliage: Vegetative vigor, aesthetics/color, health and appearance
  • Uniformity: 1 = Quality is variable from plant to plant, 5 = Similar quality between all plants

Weather Conditions:
The temperatures during the course of this trial provided a good test of overwintering. Minimum and maximum temperatures from mid-September through mid-May can be found in Figure 1 These temperatures were recorded by a Departmental weather station located in close proximity to the trial plot.

Plants got off to a good growing start with favorable climatic conditions in September and October. The first night of freezing temperatures occurred on 11/1. The plants overall looked good until the first very hard freezes occurred at the end of November. The winter was punctuated by cold temperatures and some snowfall throughout. The season low of -2 degrees F occurred on February 1. A major snowstorm on February 16 covered the area with 18 inches of snow, and snowcover remained on the trial plants for the next 3 weeks before any melting occurred. This snowcover was somewhat helpful in insulating the plants from the continuing cold temperatures over the next month. The first warming trend took place in mid-March, and favorable Spring weather conditions followed.

Evaluations and Results:
Evaluation results and individual cultivar photos can be found in the tables noted below. The FALL Evaluation (Pansies, Table 1,  Violas, Table 2 ) was performed 6 weeks after transplant by the Annual Trials Coordinator. Overwintering evaluations were done on 3/17, 3/24, and 4/14. A final winter survival count was performed on 4/23 (Pansies, Table 3 ,  Violas Table 4 ). The final SPRING Evaluation (Pansies, Table 5 ,  Violas, Table 6 ) was done by our core team of evaluators on 5/1. Plants were pulled on 5/12 to make way for our Summer Annuals Trial.

The top performers in the final Spring Evaluation were:

PANSIES: Top 12:
Ultima Baron Merlot (perfect score in every category), Panola Purple w/Face, Panola Blue w/Blotch Improved, Ultima Baron Purple (Perfection), Skyline Blue w/Face, Panola White w/Blotch, Panola Beaconsfield, Ultima Impressions Blue Shades, Fama Silver Blue, Ultima Beacon Blue, Panola Golden Yellow, and Clear Sky Purple.

VIOLAS: Top 5:
Penny Yellow Jump-Up and Penny Violet Flare (both with perfect scores in every category), Sorbet Yellow Frost, Sorbet Sunny Royale, and Sorbet Coconut Swirl.

Of note, many other cultivars performed very well. Please consult the tables noted above for a more extensive list.

Acknowledgments:
We would like to acknowledge the help of our Annuals Team of Master Gardeners who helped in all phases of this trial. We thank Mr. Bob Barnitz of Bob's Market & Greenhouse for seeding and growing on the transplants. And we thank the following companies for their participation in this year's trial:

Photos:
Individual cultivar photos can be accessed by clicking on the cultivar name in the results tables. In addition, here are some overviews of the trial site:

Photo 1, Photo 2, Photo 3