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Mortality Rate: Mortality rate was calculated as an overall percentage and then broken down into mortality rate of trees that were adjusted, versus non-adjusted trees. Adjusted trees were those that were found buried too deeply in the containers when the trees were purchased. The excess soil and roots that were above the first main-order roots for these trees were subsequently removed prior to the beginning of the study. The range of excess soil that had to be removed was from 4-9 inches.
Overall, the mortality rate for the 97 adjusted trees was 13/97= 13%
The mortality rate for the 89 non-adjusted trees was 24/89=27%
Total trees in the study =186.
Growth rate: Growth rate was determined as a percentage increases in stem caliper (stem diameter measured at 6-12 inches above ground).
Condition Ratings: Separate condition rating for the stem and canopy were determined annually for each tree. Ratings were based on a four point system with 0 representing dead and 4 representing no "flaws" for the species. Stem condition ratings were based on wholeness and health of the stem tissue, with points subtracted for bark loss and/or cambial death...for any reason. Canopy condition rating were based on the characteristic of the species, specifically live crown ration, density, balance (symmetry), as well as dieback. Leaf size and color was not taken into consideration.
Acer nigrum "Green Column"
Mortality rate 46%
Mortality rate, adjusted trees 50%
Mortality rate, non-adjusted trees 40%
Growth rate 54%
Condition ratings:
Stem Ratings 3.5+ 4/7
Stem Ratings <1.5 2/7
Canopy Rating 3.5+ 6/7
Canopy Rating <1.5 1/7
Acer rubrum x saccharinum “Autumn Blaze”
Mortality rate 17%
Mortality rate, adjusted trees 11%
Mortality rate, non-adjusted trees 33%
Growth rate 116%
Condition ratings:
Stem Ratings 3.5+ 10/10
Stem Ratings <1.5 0/10
Canopy Rating 3.5+ 9/10
Canopy Rating <1.5 0/10
Acer saccharum “Fall Fiesta”
Mortality rate 62%
Mortality rate, adjusted trees 20%
Mortality rate, non-adjusted trees 88%
Growth rate 89%
Condition ratings:
Stem Ratings 3.5+ 3/5
Stem Ratings <1.5 0/5
Canopy Rating 3.5+ 4/5
Canopy Rating <1.5 1/5
Celtis occidentalis
Mortality rate 8%
Mortality rate, adjusted trees 11%
Mortality rate, non-adjusted trees 0%
Growth rate 102%
Condition ratings:
Stem Ratings 3.5+ 11/11
Stem Ratings <1.5 0/11
Canopy Rating 3.5+ 10/11
Canopy Rating <1.5 0/11
Fraxinus americana "Autumn Blaze"
Mortality rate 8%
Mortality rate, adjusted trees 0%
Mortality rate, non-adjusted trees 14%
Growth rate 89%
Condition ratings:
Stem Ratings 3.5+ 10/11
Stem Ratings <1.5 0/11
Canopy Rating 3.5+ 10/11
Canopy Rating <1.5 0/11
Fraxinus americana "Autumn Purple"
Mortality rate 0%
Mortality rate, adjusted trees 0%
Mortality rate, non-adjusted trees 0%
Growth rate 126%
Condition ratings:
Stem Ratings 3.5+ 12/12
Stem Ratings <1.5 0/12
Canopy Rating 3.5+ 12/12
Canopy Rating <1.5 0/12
Fraxinus nigra "Fall Gold"
Mortality rate 17%
Mortality rate, adjusted trees 8%
Mortality rate, non-adjusted trees 8%
Growth rate 95%
Condition ratings:
Stem Ratings 3.5+ 10/12
Stem Ratings <1.5 0/12
Canopy Rating 3.5+ 6/12
Canopy Rating <1.5 0/12
Fraxinus nigra x mandshurica "Northern Gem"
Mortality rate 0%
Mortality rate, adjusted trees 0%
Mortality rate, non-adjusted trees 0%
Growth rate 99%
Condition ratings:
Stem Ratings 3.5+ 9/12
Stem Ratings <1.5 1/12
Canopy Rating 3.5+ 6/12
Canopy Rating <1.5 1/12
Fraxinus nigra x mandshurica "Northern Treasure"
Mortality rate 8%
Mortality rate, adjusted trees 0%
Mortality rate, non-adjusted trees 20%
Growth rate 100%
Condition ratings:
Stem Ratings 3.5+ 12/12
Stem Ratings <1.5 0/12
Canopy Rating 3.5+ 10/12
Canopy Rating <1.5 0/12
Gymnocladus dioicus
Mortality rate 31%
Mortality rate, adjusted trees 40%
Mortality rate, non-adjusted trees 25%
Growth rate 75%
Condition ratings:
Stem Ratings 3.5+ 9/9
Stem Ratings <1.5 0/9
Canopy Rating 3.5+ 5/9
Canopy Rating <1.5 0/9
Maackia amurensis
Mortality rate 17%
Mortality rate, adjusted trees 20%
Mortality rate, non-adjusted trees 14%
Growth rate 63%
Condition ratings:
Stem Ratings 3.5+ 8/8
Stem Ratings <1.5 0/8
Canopy Rating 3.5+ 7/8
Canopy Rating <1.5 0/8
Quercus macrocarpa x robur "Heritage"
Mortality rate 42%
Mortality rate, adjusted trees 0%
Mortality rate, non-adjusted trees 56%
Growth rate 71%
Condition ratings:
Stem Ratings 3.5+ 5/7
Stem Ratings <1.5 1/7
Canopy Rating 3.5+ 2/7
Canopy Rating <1.5 1/7
Tilia americana "Boulevard"
Mortality rate 31%
Mortality rate, adjusted trees 14%
Mortality rate, non-adjusted trees 50%
Growth rate 57%
Condition ratings:
Stem Ratings 3.5+ 4/9
Stem Ratings <1.5 1/9
Canopy Rating 3.5+ 8/9
Canopy Rating <1.5 0/9
Quercus macrocarpa
Mortality rate 15%
Mortality rate, adjusted trees 25%
Mortality rate, non-adjusted trees 11%
Growth rate 49%
Condition ratings:
Stem Ratings 3.5+ 10/10
Stem Ratings <1.5 0/10
Canopy Rating 3.5+ 6/10
Canopy Rating <1.5 0/10
Ulmus "Triumph"
Mortality rate 0%
Mortality rate, adjusted trees 0%
Mortality rate, non-adjusted trees 0%
Growth rate 249%
Condition ratings:
Stem Ratings 3.5+ 12/12
Stem Ratings <1.5 0/12
Canopy Rating 3.5+ 12/12
Canopy Rating <1.5 0/12
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