依症狀查找Foliage Plants疾病

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A black sooty coating (sooty mold) may appear on leaf surfaces

A white powdery coating or patches may appear on the upper surface of leaves

Brown to dark brown lesions may appear on leaves, often with a yellow border

Brown, white, or gray shell-like bumps may be found fixed to stems and leaves

Damaged tissue does not recover and may dry out and fall off

Discoloration and dieback may begin at leaf margins and tips

Leaf margins and tips may turn brown and dry out

Leaves and stems may become sticky from honeydew secretions

Leaves and stems may feel sticky to the touch from honeydew secretions

Leaves may appear dull and lose their healthy sheen

Leaves may become distorted or crinkled

Leaves may darken, soften, and take on a water-soaked appearance

Leaves may yellow and drop when infestations are left untreated

Leaves may yellow and fall, and the plant may gradually weaken

Leaves may yellow and wilt or soften

Lesions may enlarge and merge, discoloring large portions of the leaf

New growth may be stunted, distorted, or slow to emerge

New growth may halt and overall plant vigor may decline

Newly emerging or partially unfurled leaves tend to be more susceptible

Pale to tan dry patches may appear on leaves, sometimes with a papery texture

Roots may turn dark brown and emit a foul odor

Scorched areas do not regain green color and remain permanently discolored

Severe cases may cause yellowing and leaf drop

Small dark specks (spore masses) may be visible within lesions

Stems may become soft and the whole plant may wilt

Symptoms may spread to neighboring leaves or nearby plants

The plant may weaken and leaves may yellow and drop if infestations go untreated

The stem base may turn brown to black and become mushy

The white film may spread across the entire leaf

Tiny mites or fine webbing may be visible on leaf undersides

White cottony or powdery masses may appear in leaf axils, stem nodes, or at the base of the plant

White to yellow stippled speckling may spread across leaf surfaces