Spider Mites

Spider mite infestations start at the bottom and inside of the canopy — the lowest, innermost leaves where humidity is lowest and airflow is weakest. From a distance the plant looks slightly faded or speckled in the affected zone, with the top still looking fine. As the colony grows, the damage climbs upward and outward, and once webbing appears the infestation has hit crisis mode.

Early. A handful of lower-inner leaves show fine pale stippling on their tops. The rest of the plant looks normal. The mites themselves are essentially invisible without magnification — but a sharp tap of a leaf onto white paper releases tiny "pepper flakes" that move. Those are mites.

Mid. Stippling now covers most leaves in the lower-to-mid canopy rather than isolated spots. Affected leaves take on a faded, gray-green look from accumulated cell damage. The first fine webbing strands appear in branch crotches and between dense leaves. Mites are now visible to the naked eye on the undersides. Growth in the affected zone is visibly slowed.

Late. The canopy looks washed out — leaves bronze, reddish, or yellow from massive accumulated cell damage. Fine silky webbing spans branch crotches and, in severe cases, engulfs the buds entirely, trapping dust, frass, and dead mites and ruining flower quality outright. Leaves dry from the edges inward, curl, and drop. Thousands of mites are visible as moving specks across leaf surfaces and webbing. Photosynthesis collapses; untreated plants can die.

Pick up a lower-inner leaf in the early stage and look at the top of the blade: you'll see tiny pale speckles — white, yellow, or orange — scattered in a fine pepper pattern. Each speck is one cell that's been emptied of chlorophyll. Flip the leaf and the underside looks slightly dusty or dirty, with shed mite skins and debris accumulating along the midrib. Under a hand lens, tiny moving dots become visible on the underside. The paper tap test confirms it: hold white paper under the leaf and tap sharply — mites fall as "pepper flakes" that move.

By the mid stage that same leaf is covered in stippling across most of the blade rather than just a few isolated patches. The cumulative damage gives the leaf a gray-green or faded look from above. Fine silky webbing strands start appearing in the leaf's axils and in branch crotches nearby. Mites are visible to the naked eye on the underside as moving specks, particularly along the midrib. The leaf still hangs from the petiole but looks visibly stressed.

By the late stage the leaf is heavily bronzed, reddish, or washed-out yellow from massive cell damage. Webbing covers the surface and joints, trapping dust and debris. The edges dry out, curl inward, and the whole leaf eventually drops. Thousands of mites are visible as moving specks across the surface and the webbing. A leaf this far gone isn't coming back — the mites have already destroyed too much cell tissue. Aggressive treatment is needed to save what's still standing.