UACES Facebook 2008 Plants

University of Arkansas Plant Evaluation Program
2008 Plants

2008 Report
February 2011

Plants initiated in Spring 2008 (three years data): 

This completes the fourteenth year of the statewide plant evaluation program. The current team of cooperators includes Dr. Jim Robbins, Dr. Jon Lindstrom and Qingfang Chen.

The three test sites are the Hope Research Center (USDA cold hardiness zone 8), Little Rock (zone 7a), and the Fayetteville Horticulture Research farm (zone 6b). As much as possible, the three test sites were prepared in a similar manner. Full sun plants were grown in row-type beds 3' wide with a 7' grass alley. Plant groups are planted together (i.e. trees are planted together). Trees are spaced 10' apart, shrubs 6' apart, and herbaceous perennials 4' apart. The Little Rock site was planted on April 25, 2008; Fayetteville was planted on May 12, 2008; Hope planted on April 21, 2008. Irrigation at all three sites is by a drip system. Plants were fertilized and mulched after planting. Post-emergent herbicides were used at all three test sites. No disease or insect control was implemented during the first year. To maintain a tree-like habit, trees are pruned following final growth measurements. Pruning consists of removing the bottom one-third of limbs. SHRUBS are NOT pruned. Final growth measurements were taken at Little Rock on October 1; Fayetteville on October 10; and Hope on September 28.

Ratings

Rating Key

CJ = cannot judge due to insufficient information or other reasons
1 = Plant has performed well statewide
2 = Plant has performed well in zones 7a and 8.
3 = Plant performed fair statewide
4 = Plant performed fair zones 7a & 8
5 = Plant not recommended
6 = Plant performed well in 6b, poor in 7a & 8
7 = Plant performed fair in 6b, poor in 7a & 8


Abelia x ' Canyon Creek'

Three-gallon plants were donated by Flowerwood Nursery. There were no plant losses at the end of the first, second or third growing seasons. Plants are doing well in Fayetteville. Average plant size statewide is 35" tall by 46" wide and a year-end growth index (GI) of 1.095 m3 . The plant begins flowering in mid-July and continues through October. The vibrant golden yellow foliage contrasts strikingly with the intense red calyx in the fall. The plant habit is more open than ‘Rose Creek'. Statewide this plant is performing very well (1).

 


Abelia x 'Rose Creek'

Three-gallon plants were donated by Flowerwood Nursery. There were no plant losses at the end of the first growing season; however, one plant died at Little Rock in 2009. Plants are doing well in Fayetteville. Plants flowered during the first growing season. Average plant size is 25" tall by 28" wide and a year-end growth index (GI) of 0.540 m3. Plants are widest in Fayetteville (39") and narrowest in Hope (20"), with width in between at Little Rock (30"). Rose Creek has a tighter habit compared to Canyon Creek. Statewide this plant is performing very well (1).

 


Lagerstroemia x Cherry Dazzle™

One-gallon plants were donated by Flowerwood Nursery. There were no plant losses by the end of the third year. Average plant size statewide is 24" tall by 32" wide and a year-end growth index (GI) of 0.423 m3. The statewide average may be misleading as plants are significantly smaller at Fayetteville (14" tall by 16" wide) relative to the other test sites. Average plant size at Hope and Little Rock is 29" tall by 39" wide. Cherry Dazzle had the best flower display of this series in all three years. The color is a vibrant red. All crape myrtles were hard hit in Fayetteville due to feeding by rabbits and cold weather. Based on performance so far, this plant is performing well statewide (1).

 


Lagerstroemia x Raspberry Dazzle™

One-gallon plants were donated by Flowerwood Nursery. There were no plant losses at the end of the first or second growing seasons. One plant died at Fayetteville in 2010. Average plant size statewide is 23" tall by 25" wide and a year-end growth index (GI) of 0.302 m3. The statewide average may be misleading, as plants are significantly smaller at Fayetteville (6" tall by 9" wide) relative to the other test sites. Average plant size at Hope and Little Rock is 32" tall by 32" wide. The first set of emerging leaves had an attractive burgundy tint. Later flushes drew concern, as the leaves were substantially smaller, giving the plant the appearance that it had been treated with an herbicide or growth regulator. This observation was even brought to our attention by a retail outlet selling this cultivar. Limited flowering begins in mid-August. The color is an intense pink-purple. All crape myrtles were hard-hit in Fayetteville due to feeding by rabbits and cold weather. This crape myrtle would not be recommended for Arkansas (5).

 


Lagerstroemia x Ruby Dazzle™

One-gallon plants were donated by Flowerwood Nursery. There were no plant losses at the end of the first growing season; however, two plants died at Fayetteville in 2009. Average plant size statewide is 10" tall by 17" wide and a year-end growth index (GI) of 0.103 m3. Plant size is correlated to location with the largest plants in Hope (zone 8) and smallest at Fayetteville (zone 6). Average plant size at Hope is 18" tall by 31" wide. Similar to Raspberry Dazzle, the emerging foliage is a very attractive burgundy. This selection has essentially not flowered in the three years it has been in the trial. The fall/winter foliage is an attractive burgundy. All crape myrtles were hard-hit in Fayetteville due to feeding by rabbits and cold weather.

 


Lagerstroemia x Dazzle™ Me Pink

One-gallon plants were donated by Flowerwood Nursery. There were no plant losses at the end of the first growing season. A single plant was lost at Fayetteville and Little Rock in 2009. Average plant size statewide is 14" tall by 19" wide and a year-end growth index (GI) of 0.090 m3. The statewide average may be misleading, as plants are significantly smaller at Fayetteville (6" tall by 9" wide) relative to the other test sites. Average plant size at Hope and Little Rock is 17" tall by 24" wide. The flower display (clear pink) ranked just behind Cherry Dazzle during the first three growing seasons. Pink produces the fewest fruits in this series, which should help with rebloom. All crape myrtles were hard-hit in Fayetteville due to feeding by rabbits and cold weather.

 


Lagerstroemia x Snow Dazzle™

One-gallon plants were donated by Flowerwood Nursery. There were no plant losses by the end of the third year. Average plant size statewide is 23" tall by 20" wide and a year-end growth index (GI) of 0.159 m3. The statewide average may be misleading, as plants are significantly smaller at Fayetteville (13" tall by 9" wide) relative to the other test sites. Average plant size at Hope and Little Rock is 27" tall by 25" wide. Some flowering (white) was observed during the first growing season toward the end of August. Flowering is very good in August. All crape myrtles were hard-hit in Fayetteville due to feeding by rabbits and cold weather.

 

Ternstroemia gymnanthera Bigfoot™

Three-gallon plants were donated by Flowerwood Nursery. There were no plant losses at the end of the first growing season, but a single plant died at both Little Rock and Fayetteville in 2009. This selection has very distinctive leaves and a more upright plant habit. Average plant size is 35" tall by 34" wide and a year-end growth index (GI) of 0.559 m3 (essentially no change since previous year). Statewide, this plant is performing very well in Little Rock and Hope, but has been defoliated by winter temperature in Fayetteville.

 

Cephalotaxus harringtonia ' Prostrata'

One-gallon plants were donated by Flowerwood Nursery. All plants survived the first growing season. Two plants died at Fayetteville in 2009 and the remainder died in 2010. One plant died at Little Rock in 2010. Average shoot height for plants at Hope and Little Rock is 11" by 16" wide and a year-end growth index (GI) of 0.042 m3.

 


Lagerstroemia x ' Orchid Cascade'

One-gallon plants were donated by Petit Jean Foothills Nursery. Plant losses during the first growing season were minimal, with one plant dying at both Hope and Little Rock. The three remaining plants at Little Rock died in 2009, and the only plant at Fayetteville also died in 2009. The remaining three plants died at Fayetteville in 2010. Average plant size at Hope is 14" tall by 43" wide and a year-end growth index (GI) of 0.335 m3. The growth habit is an obvious cascading or trailing. Flowering was average during the first growing season and a light pink. All crape myrtles were hard-hit in Fayetteville due to feeding by rabbits and cold weather.

 


Lagerstroemia x ' Rosey Carpet'

One-gallon plants were donated by Petit Jean Foothills Nursery. A single plant died at both Fayetteville and Little Rock during the first season. All remaining plants died at Fayetteville in 2009. Average plant size at Little Rock and Hope is 10" tall by 32" wide and a year-end growth index (GI) of 0.171 m3. Flower color is more intense than Orchid Cascade. All crape myrtles were hard-hit in Fayetteville due to feeding by rabbits and cold weather.

 


The Ornamentals team would like to express their sincere appreciation to Petit Jean Foothills Nursery and Flowerwood Nursery for donating the plants for this season's trial.