ORNAMENTAL AND SHADE TREE PESTICIDE
CATEGORY 6 FULL QUESTIONS AND
CORRECT ANSWERS 2026 GRADED A+
◉ Pre-Emergence Herbicide. Answer: Form chemical barrier applied to
weeds before emerging from the soil. Apply in spring for summer
annuals, biennials, and perennials before germination.
◉ Sedges. Answer: like grass, but with triangular stems. Yellow-green
color, thrive in moist areas. Spread through seeds and small tubers.
Perennial: Yellow Nutsedge (May, Likes Moist Environments)
◉ Broadleaf Weeds. Answer: Emerge with two leaves, have taproot or
fibrous root system
◉ What are the perennial Broadleaf Weeds? Answer: Canada Thistle,
Dandelion, Ground Ivy, Mugwort
◉ What are the winter annual Broadleaf Weeds? Answer: Hairy
Bittercress and Chickweed
,◉ What are the summer annual Broadleaf Weeds? Answer: Prostrate
Spurge and Purslane
◉ What are Grassy Weeds? Answer: Straight, narrow leaves with
parallel veins
◉ What are examples of Grassy Weeds? Answer: Crabgrass (thrives in
summer heat) and Goosegrass
◉ What are Aphids? Answer: Multi-colored, soft-bodied, sap-suckers.
Pear-shaped bodies with fairly long antennae, and a pair of cornicles at
the rear of their body. A true bug with gradual metamorphosis
◉ What do aphids leave behind on leaves? Answer: Honeydew that
black sooty mold grows on
◉ What can aphids do to a plant? Answer: Cause wilting yellowing, and
curling of leaves, which may kill small plants such as flowering annuals
◉ What does it mean for a pest to have a Chewing Mouth? Answer:
Leaves behind chewing holes and jagged edges. The larvae cause the
most damage. Especially damaging to conifers, frequently killed by a
single occurrence of severe defoliation.
, ◉ What are some examples of pests with a Chewing Mouth? Answer:
Caterpillars, sawflies, beetles, leafminers. (Some can skeletonize leaves:
Adult Beetles)
◉ What does it mean for a pest to have a Piercing/Sucking Mouth?
Answer: Damage looks like pinpoint spots (stippling); some are not
noticed until wilting or dying foliage. Some (aphids and leafhoppers)
spread viruses. Insecticides are usually applied to control viruses.
◉ Aphids. Answer: What is this pest?
◉ What are Leaf-Miners? Answer: Chewing-Foliar Feeding pests.
Larvae feed within the layers of a leaf; sometimes sawflies, moths,
butterflies, wasps. Damage is yellow or brown blotches or trails on
leaves. The feed on succulent tissue between upper and lower leaf
layers. They impact appearance and are only an issue if widespread and
attack year after year.
◉ How do you treat for Leaf-Miners? Answer: Use systemics
◉ Leafminer. Answer: What is this pest?
◉ Azalea Lacebug. Answer: What is this pest?
CATEGORY 6 FULL QUESTIONS AND
CORRECT ANSWERS 2026 GRADED A+
◉ Pre-Emergence Herbicide. Answer: Form chemical barrier applied to
weeds before emerging from the soil. Apply in spring for summer
annuals, biennials, and perennials before germination.
◉ Sedges. Answer: like grass, but with triangular stems. Yellow-green
color, thrive in moist areas. Spread through seeds and small tubers.
Perennial: Yellow Nutsedge (May, Likes Moist Environments)
◉ Broadleaf Weeds. Answer: Emerge with two leaves, have taproot or
fibrous root system
◉ What are the perennial Broadleaf Weeds? Answer: Canada Thistle,
Dandelion, Ground Ivy, Mugwort
◉ What are the winter annual Broadleaf Weeds? Answer: Hairy
Bittercress and Chickweed
,◉ What are the summer annual Broadleaf Weeds? Answer: Prostrate
Spurge and Purslane
◉ What are Grassy Weeds? Answer: Straight, narrow leaves with
parallel veins
◉ What are examples of Grassy Weeds? Answer: Crabgrass (thrives in
summer heat) and Goosegrass
◉ What are Aphids? Answer: Multi-colored, soft-bodied, sap-suckers.
Pear-shaped bodies with fairly long antennae, and a pair of cornicles at
the rear of their body. A true bug with gradual metamorphosis
◉ What do aphids leave behind on leaves? Answer: Honeydew that
black sooty mold grows on
◉ What can aphids do to a plant? Answer: Cause wilting yellowing, and
curling of leaves, which may kill small plants such as flowering annuals
◉ What does it mean for a pest to have a Chewing Mouth? Answer:
Leaves behind chewing holes and jagged edges. The larvae cause the
most damage. Especially damaging to conifers, frequently killed by a
single occurrence of severe defoliation.
, ◉ What are some examples of pests with a Chewing Mouth? Answer:
Caterpillars, sawflies, beetles, leafminers. (Some can skeletonize leaves:
Adult Beetles)
◉ What does it mean for a pest to have a Piercing/Sucking Mouth?
Answer: Damage looks like pinpoint spots (stippling); some are not
noticed until wilting or dying foliage. Some (aphids and leafhoppers)
spread viruses. Insecticides are usually applied to control viruses.
◉ Aphids. Answer: What is this pest?
◉ What are Leaf-Miners? Answer: Chewing-Foliar Feeding pests.
Larvae feed within the layers of a leaf; sometimes sawflies, moths,
butterflies, wasps. Damage is yellow or brown blotches or trails on
leaves. The feed on succulent tissue between upper and lower leaf
layers. They impact appearance and are only an issue if widespread and
attack year after year.
◉ How do you treat for Leaf-Miners? Answer: Use systemics
◉ Leafminer. Answer: What is this pest?
◉ Azalea Lacebug. Answer: What is this pest?
