North Dakota State University * Dickinson Research Extension Center
1089 State Avenue, Dickinson, ND 58601-4642 Voice: (701) 483-2348 FAX: (701) 483-2005


1995 CULTIVAR TRIALS OF BEDDING PLANTS


B. Laschkewitsch and R. Smith
Department of Plant Sciences,  North Dakota State University, Fargo ND

SUMMARY
Introduction

Performance trials on over 300 annual bedding plants were conducted during the 1995 growing season by the Plant Sciences Department at North Dakota State University. In Fargo, the main trials were located on the plots on the west side of campus while a small evaluation bed was added at the research station in the western part of the state at Dickinson, ND. Both the weather and soil types in Dickinson are considerably different than the Fargo site. The Fargo plots consist of a heavy clay soil while Dickinson has a much lighter soil and typically a drier climate. We plan to expand our trials in Dickinson in 1996.
Culture

Cultivars evaluated at both sites were seeded in Jiffy Mix in the Horticulture and Forestry greenhouses on the NDSU campus in March, April and May. The only exception was geraniums from Oglevee which were received as rooted cuttings. When at the proper stage, seedlings were transplanted into cell packs containing Sunshine Mix #1. Six plants of each cultivar (12 plants of mixes) were transplanted in to the field at the Fargo site June 2 - June 6, 1995. Plants were immediately watered in with Miracle-Gro (15-30-15) liquid fertilizer. Plants were fertilized twice during the growing season. In Dickinson, plants were set out the week of May 15, 1995. Unfortunately, a light frost followed planting in Dickinson and a few salvia and verbena were lost and the geraniums were slowed quite a bit. At both stations, overhead irrigation was applied as needed and weeding was done by hand.

Weather

The weather at the Fargo station was warmer and drier than last summer. Rainfall for June, July and August was 2.36 inches less than last year but only .38 inches above average. Temperatures in June, July, and August averaged 2.0 F higher than normal but were 3.5 F warmer than in 1994. In July, two severe storms hit Fargo two days in a row which resulted in some water damage to the trial beds. The snapdragons were completely lost and the verbena were slowed substantially. In Dickinson the weather was warmer and wetter than normal. Rainfall for June, July and August exceeded the average by 3.7 inches and temperature for the same period was 1.3F above normal.

Evaluations

Plants in Fargo were evaluated twice over the season for height, spread, and qualities such as vigor, bloom quality, and overall appearance. The first evaluation was July 28, 1995 and the second was done on August 31, 1995. The Dickinson trials were evaluated on August 15, 1995 by Dr. Ron Smith.

At the Dickinson trials, the top five were:

  1. Petunia 'Purple Wave'
  2. Rudbeckia hirta 'Indian Summer'
  3. Marigold 'Perfection Gold'
  4. Statice 'Friendly Yellow'
  5. Vinca 'Pretty in Rose'

The trial garden at NDSU is an official All-America Selections display garden and is open to the public throughout the growing season. Also on display are over 300 perennials that are evaluated over the season for bloom, vigor, winter hardiness and general overall quality.

Acknowledgements

We would like to thank official supporters of our trial gardens: American Takii, Inc., Daehnfeldt, Inc., Ernst Benary of America, Inc., and Oglevee Ltd.. We hope the results from our trial gardens are beneficial in their research for new and improved cultivars.

Disclaimer: Reference to commercial products or trade names is made with the understanding that no discrimination is intended and no endorsement by NDSU or the North Dakota Agricultural Experiment Station is implied..

 

1995 BEDDING PLANT TRIAL RESULTS
NDSU Agriculture Experiment Station, Dickinson, North Dakota

Cultivar Height"
(8-15-95
Spread"
(8-15-95)
Flower Color/Comments
AGERATUM      
Neptune Blue (GS) 9-12 4-6 Blue - Good density of flowers
Think Pink (Gri) 6 12-16 Pale lavender - Flowers dense but faded
ALYSSUM      
Cheers Mix (Gri) 6 12-16 Pink, white, lavendar - Dense flowers, faded
AMMOBIUM      
Bikini (Ben) 18 4 White - Dried plants, faded flowers
COREOPSIS      
C. tinctoria (AHS) 24-30 12-18 Gold with bronze - 50/50 flowers to seeds on plant
COSMOS      
Sonata Mixed (RS) 24 18-20 Pink, white, lavender - About half seed heads
DIANTHUS      
Ideal Violet (AT, AAS) 6 4-6 Violet - Good Show
Princess Scarlet (GS) 4-6 9-12 Red - Flowers dense but faded
GERANIUM      
Manybloom Red (Gri) 6 4-6 Red - No vigor
Red Hots (Ogl) 6 6 Red - Flowers faded
Rose Orbit (GS) 4 6-9 Pink - Healthy plants
GRASSES      
Rhynchelitrum repens - Ruby Grass (Ben) 36-40 36-40 Wispy red seed heads, nice dense foliage
GYPSOPHILA      
Garden Bride (Da) 6-9 12 Pink - Dense, petite
MARIGOLD      
Perfection Gold (GS) 18-20 12 Golden orange - Clean, clear flowers, foliage - Looks good!
NIEREMBERGIA      
Mont Blanc (AAS, AT) 4-6 6-12 White - Good show of flowers
NIGELLA      
Nigella sp. 24-30 12-16 Was seed heads only at this time
PETUNIA      
Floribunda - Celebrity Blue (Bod) 6-9 6 Deep purple - no vigor, poor
Floribunda - Celebrity Red (Bod) 12-16 12-16 Red - Good flower show
Grandiflora - Ultra Crimson Star (GS) 12-16 12-16 Burgundy and white - Poor, not many flowers
Grandiflora - Ultra Sky Blue (GS) 12 12-16 Pale blue - Looks good
Milliflora - Fantasy Blue (GS) 9-12 12 Deep purple - Dense
Milliflora - Fantasy Crystal Red (GS) 6-9 9-12 Red veins, light edges - Faded small flowers, weak
Multiflora - Prime Time Blue (GS) 16-18 9-12 Deep purple - Flower color okay but plant is leggy
Mulitflora - Prime Time Rose Frost (GS) 12-16 9-12 Hot pink with white edge - Looks okay but flowers are faded
Procumbent - Purple Wave (AAS) 6-9 12-18 Bright pinkish purple - Fantastic flower show
PORTULACA      
Sunnyside mixture (CI) 6 12-18 Red, yellow, salmon, pink - Good double flower
RUDBECKIA      
R. hirta 'Indian Summer' (AAS) 36-40 18-24 Gold - Outstanding show!
SALVIA      
S. coccinea 'Lady in Red' (AAS) 24-36 24 Red - Flowers 98% gone at this time but plant is health
SHASTA DAISY      
Snow Bouquet (AT) 24-36 18-20 White - Nice flower show
SNAPDRAGON      
Royal Carpet Mixed (AT) 12 12 About half the flowers have gone to seed
STATICE      
Friendly Yellow (AT) 24-36 12-18 Yellow - Bright, clear, nice show!
Premium Blue (Gri) 24-36 10-12 Blue with white centers - deep color
VINCA      
Grape Cooler (Va) 6-9 9-12 Rose - Beautiful and healthy
Pretty in Rose (AAS) 6-9 9-12 Rose - Beautiful and healthy
VERBENA      
Imagination (AAS, Ben) 12 18-20 Dense foliage - very healthy but few flowers at this time

 

1995 BEDDING PLANT TRIAL RESULTS SEED SOURCE REFERENCE LIST*

Code Company Name and Address
AAS

All America Selections
1311 Butterfield Road Suite 310
Downer's Grove, IL 60515

AHS

American Horticulture Society
7931 East Boulevard Drive
Alexandria, VA 22308

AT

American Takii, Inc.
301 Natividad Road
Salinas, CA 93906

Ball

Ball Seed Co.
622 Town Road
West Chicago, IL 60185-3500

Bod

Bodger Seeds, LTD
PO Box 5090
El Monte, CA 91734-1090

Bur

W. Atlee Burpee Co.
300 Park Avenue
Warminster, PA 18974

Cl

Clause Seed
100 Breen Road
San Juan Bautista, CA 95045

Da

Daehnfeldt, Inc.
P.O. Box 947
Albany OR 97321

Ben

Ernst Benary of America, Inc.
1444 Larson St.
Sycamore, IL 60178

Gs

Goldsmith Seeds, Inc.
P.O. Box 1349
Gilroy, CA 95021

Gri

G.S. Grimes Seeds
11335 Concord-Hambden Rd.
Concord OH 44077

Ogl

Oglevee Ltd.
152 Oglevee Lane
Connellsville PA 15425

Pk

Park Seed Co.
P.O. Box 31
Greenwood, SC 29646

RS

Royal Sluis-America
910 Duncan Avenue
San Juan Bautista, CA 95045

Va

Vaughn's Seed Co.
5300 Katrine Avenue
Downers Grove IL 60515-4095


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