pests of turfgrass and ornamentals
feeding on XYLEM.
2 lined spittlebug adults
common on waxy leaves like magnolia and camellia. spots may be
circular or blotchy in shape, and are generally somewhat raised from
algal leaf spot the plant surface. The edges of the spots may be wavy or feathered.
can enter stems through a crack that forms a canker that kills the
branch.
caused by the fungus of the same name,
appears as purplish spots on marigold
alternaria leaf spot on marigold
leaves and stems.
whose species name indicates its preferred host -- is passed from one
alternaria leaf spot on zennias generation of zinnia to the next by spores on the seeds and in
contaminated debris in the soil.
(borers)produce sticks that look like
toothpicks on the trunk of trees they
ambrosia beetles
attack
, fungal disease that causes leaf blight. only
affects aesthetic value
anthracnose on red maple
the fungus will affect the fruit, causing
both leaves and fruit to drop off the tree.
The best treatment for apple scab begins
apple scab in crab apples in the fall, as the tree prepares to go
dormant for winter. apply a spray of zinc
sulfate and urea in the fall. rake and prune
leaves.
fungal root rot caused by several different
members of the genus Armillaria. The
symptoms are variable depending on the
Armillaria root rot host infected, ranging from stunted leaves
to chlorotic needles and dieback of twigs
and branches. mycelium is present. serious
threat to timber industry.
lacy translucent wings. immatures have a
spiny body. suck plant sap from azaleas
azalea lace bug adults
and leave distinct black excrement spots
on the underside of leaves
, The diseases caused are usually minor, only affecting the aesthetic
azalea septoria leaf spot value of the plant. may result in early leaf dropping. keep leaves dry
and use fungicide spray.
premature leaf browning, marginal
necrosis and defoliation. These events
repeat themselves over a period of
several years until the entire tree turns
prematurely brown. Trees gradually
bacterial leaf scorch on oaks
decline over the years as twigs, branches,
and limbs die from continual defoliation.
spread through leafhoppers/treehoppers.
affects xylem (blocks flow of water to
leaves). no cure.
caterpillars that live and grow in individual
bags made of silk and decorated with
bagworms
plant parts for camouflage
damage causes bunching of growth or a straplike distortion to the tip
bermudagrass or zoysiagrass mites
of the grass blades
snouted beetles that feed on grass as
adults (before laying eggs)
billbug adults
feeding on XYLEM.
2 lined spittlebug adults
common on waxy leaves like magnolia and camellia. spots may be
circular or blotchy in shape, and are generally somewhat raised from
algal leaf spot the plant surface. The edges of the spots may be wavy or feathered.
can enter stems through a crack that forms a canker that kills the
branch.
caused by the fungus of the same name,
appears as purplish spots on marigold
alternaria leaf spot on marigold
leaves and stems.
whose species name indicates its preferred host -- is passed from one
alternaria leaf spot on zennias generation of zinnia to the next by spores on the seeds and in
contaminated debris in the soil.
(borers)produce sticks that look like
toothpicks on the trunk of trees they
ambrosia beetles
attack
, fungal disease that causes leaf blight. only
affects aesthetic value
anthracnose on red maple
the fungus will affect the fruit, causing
both leaves and fruit to drop off the tree.
The best treatment for apple scab begins
apple scab in crab apples in the fall, as the tree prepares to go
dormant for winter. apply a spray of zinc
sulfate and urea in the fall. rake and prune
leaves.
fungal root rot caused by several different
members of the genus Armillaria. The
symptoms are variable depending on the
Armillaria root rot host infected, ranging from stunted leaves
to chlorotic needles and dieback of twigs
and branches. mycelium is present. serious
threat to timber industry.
lacy translucent wings. immatures have a
spiny body. suck plant sap from azaleas
azalea lace bug adults
and leave distinct black excrement spots
on the underside of leaves
, The diseases caused are usually minor, only affecting the aesthetic
azalea septoria leaf spot value of the plant. may result in early leaf dropping. keep leaves dry
and use fungicide spray.
premature leaf browning, marginal
necrosis and defoliation. These events
repeat themselves over a period of
several years until the entire tree turns
prematurely brown. Trees gradually
bacterial leaf scorch on oaks
decline over the years as twigs, branches,
and limbs die from continual defoliation.
spread through leafhoppers/treehoppers.
affects xylem (blocks flow of water to
leaves). no cure.
caterpillars that live and grow in individual
bags made of silk and decorated with
bagworms
plant parts for camouflage
damage causes bunching of growth or a straplike distortion to the tip
bermudagrass or zoysiagrass mites
of the grass blades
snouted beetles that feed on grass as
adults (before laying eggs)
billbug adults
