Disease/pesta | Soil toleranceb | Tidinessc | Climated | Pruninge | Wood strengthf | Pavingg | Droughth | Cultivarsi | Longevityj | Ozone tolerancek | BVOC emissionl | Pollen emissionm | Average | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
City sector | ||||||||||||||
Juniperus chinensis | 2 | 2 | 2 | 3 | 3 | 2 | 3 | 3 | 2 | 2 | — | 3 | 3 | 7.7 |
Betula pendula | 1 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 3 | — | 1 | 5.2 |
Camellia japonica | 3 | 3 | 2 | 3 | 3 | 2 | 3 | 2 | 3 | 2 | — | — | 2 | 8.9 |
C¤rnus kousa | 2 | 2 | 2 | 1 | 3 | 3 | 3 | 2 | 2 | 2 | — | — | 2 | 7.1 |
Ulmus parvifolia | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 2 | 3 | 2 | — | — | 2 | 8.3 |
Sequoia sempervirens | 2 | 3 | 2 | 3 | 3 | 3 | 3 | 1 | 1 | 3 | 3 | 2 | 2 | 7.2 |
Washingtonia robusta | 1 | 2 | 1 | 2 | 3 | 3 | 2 | 3 | 1 | 3 | — | 1 | 2 | 6.0 |
Pistacia chinensis | 3 | 2 | 3 | 3 | 1 | 3 | 3 | 3 | 2 | 2 | — | 2 | 2 | 8.1 |
Liquidamber styraciflua | 2 | 2 | 2 | 3 | 3 | 2 | 1 | 2 | 3 | 3 | 1 | 1 | 2 | 6.5 |
Pinus canariensis | 1 | 2 | 2 | 1 | 3 | 2 | 2 | 3 | 1 | 3 | — | 2 | 2 | 5.8 |
Mean | 7.1 | |||||||||||||
Suburban sector | ||||||||||||||
Quercus wislizenii | 2 | 3 | 2 | 3 | 1 | 3 | 2 | 3 | 1 | 3 | — | 1 | 1 | 7.1 |
Q. lobata | 3 | 2 | 2 | 3 | 3 | 2 | 2 | 3 | 1 | 3 | — | 2 | 1 | 7.4 |
Moms alba ‘Fruitless’ | 2 | 2 | 2 | 3 | 1 | 1 | 1 | 2 | 2 | 2 | 1 | 2 | 1 | 5.5 |
Sequoia sempervirens | 2 | 3 | 2 | 3 | 3 | 3 | 3 | 1 | 1 | 3 | 3 | 2 | 2 | 7.2 |
Cupressus sempervirens ‘Stricta’ | 1 | 2 | 2 | 3 | 3 | 2 | 2 | 3 | 2 | 2 | — | — | 3 | 7.4 |
Celtis sinensis | 2 | 3 | 2 | 3 | 1 | 2 | 2 | 2 | 1 | 3 | — | 3 | 2 | 6.8 |
Prunus sargentii | 1 | 3 | 2 | 3 | 3 | 2 | 3 | 1 | 2 | 1 | — | — | 3 | 7.5 |
S. gigantea | 1 | 2 | 2 | 3 | 3 | 3 | 2 | 2 | 1 | 3 | 3 | 2 | 2 | 6.4 |
Ailanthus altissima | 2 | 3 | 2 | 1 | 1 | 1 | 2 | 3 | 1 | 2 | 1 | — | 2 | 5.8 |
Liquidamber styraciflua | 2 | 2 | 2 | 3 | 3 | 2 | 1 | 2 | 3 | 3 | 1 | 1 | 2 | 6.5 |
Mean | 6.8 | |||||||||||||
Rural sector | ||||||||||||||
Albizia julibrissin | 1 | 3 | 2 | 3 | 1 | 1 | 2 | 3 | 2 | 1 | — | 2 | 2 | 6.4 |
Quercus kelloggii | 3 | 3 | 2 | 3 | 3 | 2 | 2 | 2 | 1 | 3 | — | 1 | 1 | 7.5 |
Q. wislizenii | 2 | 3 | 2 | 3 | 1 | 3 | 2 | 3 | 1 | 3 | — | 1 | 1 | 7.1 |
Elaeagnus angustifolia | 1 | 2 | 2 | 3 | 1 | 2 | 3 | 3 | 1 | 1 | — | — | 1 | 6.6 |
Q. lobata | 3 | 2 | 2 | 3 | 3 | 2 | 2 | 3 | 1 | 3 | — | 2 | 1 | 7.4 |
Pinus sabiniana | 3 | 2 | 2 | 3 | 3 | 2 | 2 | 3 | 1 | 3 | — | 3 | 2 | 7.6 |
Liquidamber styraciflua | 2 | 2 | 2 | 3 | 3 | 2 | 1 | 2 | 3 | 3 | 1 | 1 | 2 | 6.5 |
Pinus nigra | 1 | 2 | 2 | 1 | 3 | 2 | 2 | 3 | 1 | 1 | 3 | — | 2 | 5.8 |
Q. douglasii | 3 | 3 | 2 | 3 | 3 | 3 | 3 | 3 | 1 | 3 | — | 2 | 1 | 8.3 |
Ligustrum lucidum | 2 | 2 | 2 | 3 | 1 | 2 | 2 | 3 | 2 | 2 | — | 3 | 1 | 6.8 |
Mean | 7.0 | |||||||||||||
Commonly planted today | ||||||||||||||
Sequoia sempervirens | 2 | 3 | 2 | 3 | 3 | 3 | 3 | 1 | 1 | 3 | 3 | 2 | 2 | 7.2 |
Pistacia chinensis | 3 | 2 | 3 | 3 | 1 | 3 | 3 | 3 | 2 | 2 | — | 2 | 2 | 8.1 |
Pyrus calleryana | 2 | 3 | 2 | 1 | 1 | 1 | — | 2 | 3 | 2 | 3 | 3 | 3 | 6.0 |
Celtis sinensis | 2 | 3 | 2 | 3 | 1 | 2 | 2 | 2 | 1 | 3 | — | 3 | 2 | 6.8 |
Acer rubrum | 2 | 2 | 2 | 3 | 1 | 1 | 2 | 1 | 3 | 3 | 3 | 2 | 1 | 6.0 |
Lagerstroemia indica | 2 | 2 | 2 | 3 | 3 | 2 | 3 | 3 | 3 | 2 | _ | 3 | 2 | 7.8 |
A. palmatum | 2 | 2 | 2 | 1 | 1 | 2 | 3 | 2 | 3 | 2 | — | 2 | 1 | 6.1 |
Nyssa sylvatica | 3 | 3 | 2 | 3 | 3 | 3 | 3 | 2 | 1 | 3 | 3 | — | 2 | 8.3 |
Quercus rubra | 2 | 2 | 2 | 3 | 3 | 3 | 2 | 2 | 1 | 3 | 3 | 1 | 1 | 6.6 |
A. buergerianum | 3 | 2 | 2 | 3 | 1 | 2 | 3 | 3 | 1 | 2 | — | — | 1 | 7.6 |
Mean | 7.0 |
↵a 1 = pest/disease sensitive, 2 = resistant, 3 = free from pests/disease (Gilman et al. 1996); weight = 5.
↵b 1 = anything less than 2, 2 = tolerates 2 of 3 textures and occasionally wet or well-drained, or both drainage regimes and 1 of 3 textures, 3 = tolerates all 3 textures and occasionally wet or well-drained soil (Gilman et al. 1996); weight = 5.
↵c 1 = > 1 litter type, 2 = 1 litter type, 3 = no litter (Reimer 1996); weight = 5.
↵d 1 = not adapted to Sacramento climate, 2 ≈ adapted to Sacramento and warmer climates, 3 = adapted to Sacramento and cooler climates (Reimer 1996); weight = 5.
↵e 1 = pruning necessary for strong structure, 2 = undefined, 3 = little required (Gilman et al. 1996; Fitch 1996); weight = 3.
↵f 1 = weak wood, 2 ≈ medium, 3 = strong (Pacific Gas & Electric 1993); weight = 3.
↵g 1 = can form large surface roots, 2 = occasional problem, 3 = not a problem (Reimer 1996); weight = 3.
↵h 1 = low drought tolerance, 2 = medium, 3 = high (Costello and Jones 1992) eight = 3.
↵i 1 = no cultivars, 2 = 1-3, 3 = > 3 (Gilman et al., 1996); weight = 3.
↵j 1 = lifespan < 25 yr, 2 = 25-50 yr, 3 > 50 yr (Gilman et al. 1996); weight = 1.
↵k 1 = ozone sensitive, 2 = undefined, 3 = tolerant (Gilman et al. 1996); weight = 1.
↵l 1 = BVOC emission > 10, 2 = 1-10, 3 < 1 g/g dry leaf wt/hr (Benjamin et al. 1996); weight = 1.
↵m 1 = high allergenicity, 2 ≡≡ moderate, 3 = low (based on average rankings from 5 surveys returned by local allergy clinics); weight = 1.