| 5388327 |
construction |
|
Roots are damaged by excavation for a new sidewalk. |
| 5388330 |
spider mites |
|
This plant is infested with spider mites. |
| 5388332 |
dieback |
|
This tree exhibits stagheading dieback. |
| 5388333 |
dieback |
|
Diebakc in the upper crown of this tree has lead to dead wood. |
| 5388334 |
dieback |
|
Dieback has lead to dead wood in this tree. |
| 5388325 |
construction |
|
Roots are damaged by a new sidewalk. |
| 5388326 |
construction |
|
Roots are damaged by excavation for a new sidewalk. |
| 5388324 |
construction |
|
a new sidewalk. |
| 5388262 |
root lifting, soil heaving, and windthrow |
|
Soil freezing and thawing can cause the root plate to lift up toward the soil surface. |
| 5388268 |
construction |
|
A new sidewalk is layed right next to trees. |
| 5388273 |
obscure scale |
Melanaspis obscura |
An obscure scale infests this branch. |
| 5388275 |
iron deficiency |
|
Pattern of chlorotic trees in parking lot |
| 5388277 |
restricted root system |
|
pavement laid upto the tree trunk with some mulch placed at the base |
| 5388287 |
dieback |
|
|
| 5388292 |
twolined chestnut borer |
Agrilus bilineatus |
Chestnut borer has infested this red oak. |
| 5388238 |
termites |
|
This tembusu is infested with termites. |
| 5388254 |
lace bugs |
Corythucha spp. |
|
| 5388229 |
dieback |
|
During prolonged drought periods, trees will exhibit a general thinning of the canopy. This is the tree's effort to compensate for root loss and is called defensive dieback. |
| 5388230 |
dieback |
|
During prolonged drought periods, trees will exhibit a general thinning of the canopy. This is the tree's effort to compensate for root loss and is called defensive dieback. |
| 5388237 |
termites |
|
The bark on this tembusu is covered with termites. |
| 5388286 |
Phytophthora root rot |
Phytophthora cinnamomi |
Shrubs affected by phytophthora root rot. |
| 5388319 |
unknown scale |
|
Poor cultural conditions predisposed this tree to scales. |
| 5388318 |
unknown scale |
|
Scales can be seen on the underside of this ficus leaf. |
| 5388321 |
unknown scale |
|
Poor cultural conditions predisposed this tree to scales. |
| 5388207 |
unknown scale |
|
A type of scale infects this atlas cedar. |
| 5395299 |
unknown scale |
|
A type of scale infects this atlas cedar. |
| 5388347 |
eastern tent caterpillar |
Malacosoma americanum |
Many eastern tent caterpillar species build tents which are often occupied for the entirety of the larval stage. |
| 5388329 |
sphinx or hawk moths |
|
The sphynx moth uses its large wings to hover and feed like hummingbirds. |
| 5388320 |
camellia |
Camellia japonica |
White scales cover this forest tree. |
| 5388269 |
biological control (general) |
|
Nicotine can be extracted from some plants (e.g., tobacco) by burning or by placing it in a water solution. |
| 5388261 |
root zone |
|
Compacted soils can lead to a raised root plate for trees. |
| 5388259 |
irrigation |
|
A leaky tube is a way of providing drip irrigation. |
| 5388252 |
lace bugs |
Teleonemia spp. |
The picture shows shrub (Pieris japonica) damage from lace bugs. |
| 5388251 |
lace bugs |
|
Damage and exudate of lace bugs on foliage. |
| 5388224 |
Norway spruce |
Picea abies |
One tree survives; one tree dies. |
| 5388180 |
irrigation |
|
Algae on the trunk of this tree (Pyrus calleryana) caused by irrigation hitting the trunk of the tree. |
| 5388179 |
soil & water |
|
When algae and moss form on the soil surface this can be an indicator that the soil may be too wet and acidic for certain tree species. |
| 5388367 |
parking lot infiltration |
|
Parking lot allows for water penetration and thereby conservation. |
| 5388366 |
parking lot infiltration |
|
Parking lot design allows for water to infiltrate the materials and thereby conserve resources. |
| 5388270 |
drought |
|
drought imposed by overhand and no irrigation. |
| 5388363 |
paved roads and streets |
|
Paved area allows visitors to view trees and their foliage. |
| 5388364 |
paved roads and streets |
|
Leaf images have been printed into the walkway. |
| 5388360 |
restricted root system |
|
Tree is in pavement. |
| 5388345 |
paved roads and streets |
|
Street trees border the paved road in Bali. |
| 5388358 |
restricted root system |
|
This tree is in pavement. |
| 5388359 |
restricted root system |
|
Tree is in pavement. |
| 5388341 |
paved roads and streets |
|
Street trees border the road. |
| 5388361 |
tree pit |
|
Tree is planted in a very small tree pit and has had cement dumped on its base. |
| 5395290 |
bridging |
|
bridging over roots |
| 5395291 |
bridging |
|
bridginf orver roots to protect tree in walkway |
| 5388328 |
soil compaction |
|
Soil rollers are used to smooth and compact soil. |
| 5388308 |
restricted root system |
|
A root grows over a curb and into and through a street. |
| 5388309 |
restricted root system |
|
A root grows our of a sidewalk. |
| 5388310 |
restricted root system |
|
Roots growing under a sidewalk cause cracking and heaving. |
| 5388311 |
restricted root system |
|
Roots growing under sidewalk causes crack. |
| 5388312 |
restricted root system |
|
Roots growing under a walkway causes a crack. |
| 5388295 |
restricted root system |
|
Not even a reconstructed curb can keep this live oak's enormous root system contained. |
| 5388296 |
restricted root system |
|
The root system on this live oak is severely restricted. |
| 5388293 |
horned oak gall |
Callirhytis cornigera |
Horned oak gall |
| 5388294 |
restricted root system |
|
The curb on this street was constructed to allow for a larger area of root space for this live oak. |
| 5388281 |
restricted root system |
|
|
| 5388272 |
horned oak gall |
Callirhytis cornigera |
Horned oak gall |
| 5388258 |
flooding/high water |
|
A leak in the irrigation tubes causes water to build up. |
| 5388199 |
bridging |
|
bridging over roots to protect tree in walkway |
| 5388231 |
flooding/high water |
|
A tree suffers on a poorly drained soil. Water fills most of the pore space in poorly drained soils for long periods, reducing the amount of oxygen available for uptake by the roots. |
| 5388232 |
drought |
|
Soils that drain too well often hold too little water to support healthy growth, creating constant drought-like conditions. |
| 5388240 |
irrigation |
|
Tree gator bags provide a drip irrigation option. |
| 5388241 |
irrigation |
|
Tree gator bags provide a drip irrigation option. |
| 5388322 |
obscure scale |
Melanaspis obscura |
|
| 5388298 |
construction |
|
constructing a retaining wall. |
| 5388297 |
radiation |
|
The reflected sunlight off these buildings intensifies the angles of light hitting these trees, causing damage. |
| 5388267 |
construction |
|
Construction damage caused when the new sidewalk was installed ultimately lead to the demise of the tree. |
| 5388255 |
lady beetle |
|
A ladybug and aphids are on this river birch leaf (Betula nigra). |
| 5388239 |
building |
|
Dead grass marks the outline of an old building. |
| 5395450 |
irrigation |
|
Tree gator bags provide a drip irrigation option. |
| 5388350 |
termites |
|
Termite damage is shown. |
| 5388348 |
termites |
|
A termite infestation grips this tree. |
| 5388349 |
termites |
|
Tunnels on the inside fo a tree trunk provide routes for termites. |
| 5388343 |
restricted root system |
|
Street trees border the paved road and sidewalk. |
| 5388342 |
restricted root system |
|
Street trees border the paved road and sidewalk. |
| 5388338 |
restricted root system |
|
This street tree is completely bordered by hardscape on all sides. |
| 5388339 |
restricted root system |
|
This street tree is completely bordered by hardscape on all sides. |
| 5388228 |
flooding/high water |
|
These trees are planted too deeply. This can cause complications with drought and poor root development. |
| 5388225 |
flooding/high water |
|
This tree was planted too deeply and, therefore, is suffering from significant decline. Trees planted too deeply may suffer from drought stress and often have poorly developed root systems. |
| 5388226 |
flooding/high water |
|
These trees are planted too deeply. This can cause complications with drought and poor root development. |
| 5388227 |
flooding/high water |
|
These trees are planted too deeply. This can cause complications with drought and poor root development. |
| 5388284 |
mantid |
Tenodera spp. |
A praying mantis clings to a window. |
| 5388282 |
mantid |
Tenodera spp. |
A praying mantid case is attached to this twig. |
| 5388283 |
mantid |
Tenodera spp. |
A praying mantid case is attached to this branch. |
| 5388368 |
irrigation |
|
Girl uses a hose to sprinkle water on plants. |
| 5388344 |
paved roads and streets |
|
Street trees border the paved road. |
| 5388340 |
crown raising (pruning) |
|
This trees lower crown was pruned and raised to provide better road clearance. |
| 5388278 |
bark beetles |
|
Pine bark beetles infect this virginia pine. |
| 5388369 |
pine weevil |
Hylobius pinastri |
Weevil on a tuplip poplar. |
| 5388365 |
walkingstick |
Anisomorpha spp. |
Walkingstick |
| 5388351 |
Japanese beetle |
Popillia japonica |
Due to its rapid tree defoliation and broad range of tree species attacked, the Japanese beetle is one of the most devastation pests to urban landscape plants in the eastern United States. |
| 5388346 |
tarantulas |
|
Tarantula. |
| 5388314 |
restricted root system |
|
Roots cause crack in sidewalk. |
| 5388280 |
sawfly |
Macremphytus spp. |
A pine sawfly is on this needle. |
| 5388279 |
sawfly |
Macremphytus spp. |
A pine sawfly clings to pine needles. |
| 5388234 |
drought |
|
The Japanese Tree Lilac in this photograph exhibits dieback caused by drought. |
| 5388209 |
cicadas |
|
A maple exhibits signs of a cicada infestation. |
| 5388356 |
Japanese beetle |
Popillia japonica |
Due to its rapid tree defoliation and broad range of tree species attacked, the Japanese beetle is one of the most devastatin pests to urban landscape plants in the eastern United States. |
| 5388355 |
Japanese beetle |
Popillia japonica |
Due to its rapid tree defoliation and broad range of tree species attacked, the Japanese beetle is one of the most devastatin pests to urban landscape plants in the eastern United States. |
| 5388354 |
Japanese beetle |
Popillia japonica |
Due to its rapid tree defoliation and broad range of tree species attacked, the Japanese beetle is one of the most devastatin pests to urban landscape plants in the eastern United States. |
| 5388352 |
Japanese beetle |
Popillia japonica |
Due to its rapid tree defoliation and broad range of tree species attacked, the Japanese beetle is one of the most devastatin pests to urban landscape plants in the eastern United States. |
| 5388353 |
Japanese beetle |
Popillia japonica |
Due to its rapid tree defoliation and broad range of tree species attacked, the Japanese beetle is one of the most devastatin pests to urban landscape plants in the eastern United States. |
| 5388313 |
restricted root system |
|
Roots growing under this sidewalk cause heaving and cracking. |
| 5388306 |
restricted root system |
|
Root damage has occured under this paved sidewalk. |
| 5388307 |
restricted root system |
|
Roots : 1; Curb : 0 |
| 5388304 |
black locust |
Robinia pseudoacacia |
Thorns on a black locust. |
| 5388302 |
fragrant sumac |
Rhus aromatica |
New buds on fragrant sumac. |
| 5388289 |
sawtooth oak |
Quercus acutissima |
|
| 5388274 |
rhinoceros beetle |
Xyloryctes jamaicensis |
Rhinoceros beetle has infested this palm tree. These beetles usually cause only minor damage.
|
| 5388260 |
restricted root system |
|
Roots in search of space to expand cause this brick terrace to heave. |
| 5388362 |
turf (general) |
|
Picture shows areas of turf grown in differing levels of sun exposure. |
| 5388315 |
black spot |
Diplocarpon rosae |
Black spot is on these leaves. |
| 5388291 |
restricted root system |
|
The restricted root system on this large pin oak is spilling over the curb onto the street. |
| 5388323 |
crown raising (pruning) |
|
Pruning by crown raising must be completed in order to provide sidewalk clearance. |
| 5388316 |
rose |
Rosa spp. |
Rosa x 'Carefree' |
| 5388303 |
black locust |
Robinia pseudoacacia |
Old black locust bark becomes flat topped and deeply furrowed. |
| 5388301 |
fragrant sumac |
Rhus aromatica |
Fragrant sumac leaves turn yellow-gold in fall. |
| 5388264 |
mealybugs |
|
Mealybugs are very primative insects and feed in the same way as aphids. |
| 5388265 |
mealybugs |
|
Mealybugs are very primative insects and feed in the same way as aphids. |
| 5388256 |
leaf cutter weevil |
Amblyrhinus poricollis |
Damage done by the leaf cutter. |
| 5388218 |
restricted root system |
|
Confined root systems can cause damage to urban hardscapes. |
| 5388219 |
restricted root system |
|
Confined root systems can cause a poorly developed root system and damage to urban hardscapes. |
| 5388217 |
restricted root system |
|
Confined roots systems can cause damage to urban landscapes. |
| 5388299 |
glossy buckthorn |
Frangula alnus |
Vegetative buds pop out on a glossy buckthorn |
| 5388300 |
fragrant sumac |
Rhus aromatica |
Buds on a fragrant sumac are shown. |
| 5388290 |
sawtooth oak |
Quercus acutissima |
Sawtooth oak. |
| 5388233 |
fertilization |
|
Using the drill hole system to fertilize allows air and fertilizer to better penetrate the soil. After the fertilizer has been applied, the holes are than filled with organic or inorganic mulch. |
| 5388220 |
restricted root system |
|
Confined root systems can cause heaving of surrounding hardscapes. |
| 5388221 |
restricted root system |
|
Confined root systems often cause damage to surrounding hardscape. |
| 5388222 |
restricted root system |
|
Confined root system causes damage to surrounding hardscape. |
| 5388223 |
restricted root system |
|
A confined root system causes heaving to surrounding hardscape. |
| 5388271 |
horned oak gall |
Callirhytis cornigera |
Oak horngall on oak |
| 5388205 |
monarch butterfly |
Danaus plexippus |
Soon to be a butterfly, a caterpillar munches on greens in the garden. |
| 5388203 |
restricted root system |
|
Trees are grown in harsh urban conditions. |
| 5388202 |
restricted root system |
|
Trees have very limited root space. |
| 5388201 |
urban planting |
|
Urban boulevard trees are placed in areas surrounded by hardscape and buildings. |
| 5388266 |
fertilization |
|
Muriate of Potash is a good source of potassium. |
| 5388263 |
magnolia scale |
Neolecanium cornuparvum |
This magnolia is infested with magnolia scale. Scales are devastating and difficult to control. |
| 5388247 |
irrigation |
|
Golf course irrigation. |
| 5388248 |
Japanese beetle |
Popillia japonica |
This pair of adult Japanese beetles exhibits a naturally wild mating engagement. |
| 5388249 |
Japanese beetle |
Popillia japonica |
A Japanese beetle perches on a shoot. |
| 5388250 |
Japanese beetle |
Popillia japonica |
A Japanese beetle perches on this leaf. |
| 5388246 |
irrigation |
|
Irrigation emitters are placed at the base of trees. |
| 5388245 |
irrigation |
|
Center pivot irrigation picture taken from the air. |
| 5388242 |
honeylocust |
Gleditsia triacanthos |
Honey locusts have pointed thorns. |
| 5388236 |
Eriophyid mite |
|
Eriophyid mites infect eastern white pine. |
| 5388235 |
Eriophyid mite |
|
Eriophyid mites are on this eastern white pine. |
| 5388204 |
bumble bees |
Bombus spp. |
A bumblebee gathers nectar from a flower. |
| 5388184 |
ants |
|
In some instances, ant presence may be cause for further inspection of tree health. |
| 5388185 |
ants |
|
Ant presence may be cause for further inspection of tree health. |
| 5388189 |
bagworms |
|
Bagworms construct these protective bags for overwintering and from which, young larvae will crawl out from next year. Bagworms are perennial insect pests of juniper, spruce, pine, arborvitae, and other conifer species. |
| 5388190 |
bagworms |
|
Many differenet broadleafed trees, not only conifers, host bagworms. |
| 5388191 |
bagworms |
|
Broadleafed deciduous trees also host bagworms. |
| 5388192 |
bagworms |
|
A bagworm hangs from this conifer branch. |
| 5388194 |
wood borers |
|
A wood borer leaves boring marks on a sugar maple. |
| 5388196 |
wood borers |
|
Evidence of borer presence is demonstrated in a branch crotch. |
| 5388195 |
wood borers |
|
A red maple demonstrates borer damage. |
| 5388182 |
pinhole borer |
Platypus spp. |
Ambrosia beetles tunnel into the stem and construct galleries where they will raise their young. |
| 5388183 |
pinhole borer |
Platypus spp. |
Signs of the ambrosia beetle often include boring holes and galleries as depicted on this elm. |
| 5388193 |
bee |
Anthophora ursina |
A manmade observational beehive provides an excellent way to study bees in the laboratory. |
| 5388186 |
ants |
|
Ants take advantage of the soil surrounding trees to build wide-spread ant hills. |
| 5388187 |
root lifting, soil heaving, and windthrow |
|
When root growth is restricted by urban hardscapes, roots can cause damaging heaving of hardscapes. |
| 5388188 |
paved roads and streets |
|
Maintaing the structural integrity of a paved area becomes a problem when the pavement butts up against a tree's trunk. |
| 5388181 |
pinhole borer |
Platypus spp. |
Small, wood-boring holes are left behind as signs of the ambrosia beetle in this maple sample. |
| 5388176 |
mites |
|
Mites infect a fraser fir twig. |
| 5388177 |
mites |
|
A mite infects a fraser fir. |
| 5388178 |
mites |
|
A mite infects a fraser fir. |
| 5388200 |
bridging |
|
bridging over roots to protect tree in walkway; light in walkway
|
| 5395430 |
art work |
|
|
| 5395429 |
art work |
|
|
| 5388335 |
art work |
|
|
| 5388305 |
root barrier |
|
Samples of Biobarrier and Biobarrier 2 by Reemay |
| 5388243 |
pruning (general) |
|
hand pruners
|
| 5388214 |
climbing spurs |
|
damage from climbing spikes or climbing spurs |
| 5388216 |
climbing spurs |
|
damage caused by climbing spikes or climbing spurs |
| 5388215 |
climbing spurs |
|
damage caused by climbing spikes or climbing spurs |
| 5395301 |
defoliation due to unknown cause |
|
|
