Table 1.

Average percent canopy with winter color change across boxwood species in 2021 and 2022.

Mean (± SD) % canopy with winter color change
20212022
Boxwood speciesaNb21-Feb02-Aprc11-May23-JulNd09-Mar
Buxus balearica 36.7 ± 2.9 b0.0 ab0.0 ab030.0 ab
Buxus harlandii 80.6 ± 1.8 b1.3 ± 3.5 ab0.0 ab080.0 ab
Buxus microphylla 4426.1 ± 27.6 b1.1 ± 2.1 b0.0 b0443.0 ± 4.8 b
Buxus sempervirens 5261.0 ± 37.4 a17.2 ± 29.3 a9.5 ± 23.4 a8.9 ± 26.13916.0 ± 27.2 a
Buxus sinica var. insularis 1119.1 ± 24.8 b0.9 ± 2.0 ab0.0 ab0110.9 ± 3.0 ab
Buxus hybrid2465.8 ± 32.1 a2.7 ± 8.3 b0.0 ab0208.5 ± 13.8 ab
  • a Individual selections of each species. B. balearica (n = 1), B. harlandii (n = 2), B. microphylla (n = 11), B. sempervirens (n = 15), B. sinica var. insularis (n = 3), and Buxus hybrids (n = 8).

  • b Number of total individuals assessed for winter color change in 2021 for each boxwood species.

  • c Means with separate connecting letters are statistically different based on Tukey’s Honest Significant Difference test within each individual rating date.

  • d Number of total individuals assessed for winter color change in 2022 for each boxwood species.