Aphidoidea
Small soft-bodied sap-sucking insects that cluster on tender growth, leaf undersides, flower buds, and stems. In hydroponic systems they can reproduce quickly.
Pests and diseases
Pests & Diseases
Information on pests and diseases, and how to treat them
Psila rosae
A small fly whose larvae tunnel into carrot and related root crops. In hydroponic or soilless systems it is most relevant to deep media beds, container-grown.
Noctuidae
Cutworms are moth larvae that hide in growing media or debris by day and feed at night, often chewing through young seedling stems at or just below the media.
Peronosporaceae
Downy mildew is a group of oomycete plant diseases that cause angular yellowing, leaf spotting, gray to purple fuzzy growth on leaf undersides, and rapid.
Sciaridae
Small dark flies whose larvae live in moist growing media, biofilm, algae, and organic debris. In hydroponic and soilless systems, adults are mostly a nuisance.
Agromyzidae
Leaf miners are larvae of flies, moths, beetles, or sawflies that feed between the upper and lower surfaces of leaves, creating pale winding tunnels or.
Puccinia menthae
Mint rust is a fungal disease of mint and related Mentha crops that produces orange, yellow, brown, or black pustules on leaves and stems. In hydroponic and.
Erysiphales
A fungal issue that spreads fast when humidity spikes and airflow is weak, especially in tightly packed leafy crops.
Meloidogyne spp.
Microscopic plant-parasitic roundworms that invade roots and stimulate gall or knot formation. In hydroponic and soilless systems they are most likely.
Pythium spp.
Root rot usually follows poor oxygenation or warm, dirty nutrient solution and can collapse a crop quickly.
Tetranychidae
Tiny sap-feeding mites that live mostly on leaf undersides and damage plants by piercing cells, causing pale stippling, bronzing, leaf drop, fine webbing, and.
Thysanoptera
Tiny slender insects that rasp plant tissue and feed on released cell contents, causing silvering, scarring, distorted new growth, black fecal specks, flower.
Manduca quinquemaculata
Large green sphinx moth caterpillars that feed heavily on tomato and related nightshade crops. In hydroponic or greenhouse systems they are usually introduced.
Aleyrodidae
Small sap-sucking insects that live mostly on leaf undersides and fly up in white clouds when disturbed. In hydroponic and greenhouse systems they weaken plants.