What's wrong with my plant?

All conditions

• Pest Aphids: clusters and sticky leaves Clusters of small soft insects on stems and under leaves, often with sticky or shiny residue, mean aphids. They can… Sticky or shiny residue · Stunted growth · Visible bugs · Wilting or drooping
• Disease Bud rot: brown, dying buds and gray fuzz A browning, dying section of bud, sometimes with gray fuzz, usually means bud rot. It can't be cured and it… Browning / necrosis · Surface coating or powder · Wilting or drooping · Buds
• Pest Caterpillars in buds: corn earworm and what follows Tunnels, droppings and wilting tips in flowering buds usually mean caterpillars, often corn earworm outdoors. Check buds by hand from… Browning / necrosis · Chewed or tunnelled · Visible bugs · Wilting or drooping
• Pest Fungus gnats: small flies around wet soil Small dark flies around the pot usually mean the soil is staying too wet. The adults are a nuisance. Their… Stunted growth · Visible bugs · Roots · Soil surface
• Temperature Heat stress: when the tent is running too hot Wilting or curling on a plant with moist roots, in a tent that runs hot, may be heat stress. Measure… Browning / necrosis · Curling or clawing · Wilting or drooping · Buds
• Pest Hemp russet mites: the pest you can’t see Upward-curling leaf edges and a dull, bronzed look, with no webbing and no bugs you can find, may mean russet… Browning / necrosis · Curling or clawing · Other discolouration · Pale speckling
• Light Light burn: bleached leaves closest to the lamp Pale or bleached leaves at the very top of the plant, closest to the light, may mean too much light… Browning / necrosis · Curling or clawing · Other discolouration · Yellowing
• Normal, not a problem Natural senescence: when yellowing leaves are supposed to happen Late in flower, your plant starts dismantling its own fan leaves on purpose. Yellowing · Lower fan leaves
• Nutrient toxicity Nutrient burn: brown tips and edges from too much feed Brown, crispy tips or edges after a stronger feed may be nutrient burn, but other problems look the same. Test… Browning / necrosis · Curling or clawing · Wilting or drooping · Yellowing
• Watering Overwatering: wet roots that can’t get air Drooping or yellowing leaves on a pot that still feels heavy usually mean the roots are too wet. Don't water… Curling or clawing · Stunted growth · Wilting or drooping · Yellowing
• pH / lockout pH lockout: why feeding more makes it worse A plant can be surrounded by a nutrient and unable to use it. Yellowing
• Disease Powdery mildew: white dusty patches on leaves White, flour-like spots on the top of leaves are usually powdery mildew. Remove affected leaves early, because new spores can… Spots · Surface coating or powder · Buds · Lower fan leaves
• Normal, not a problem Purple stems and petioles: the phosphorus myth Purple stems are not a reliable sign of phosphorus deficiency. Other discolouration · Stems and petioles
• Disease Root rot: brown roots and a plant that keeps declining Wilting or stunting that watering and feeding don't fix, with brown or decaying roots, points to root rot. Check the… Browning / necrosis · Stunted growth · Wilting or drooping · Yellowing
• Pest Spider mites: pale speckles, then webbing Fine pale speckles on the leaves, with tiny moving dots or webbing underneath, point to spider mites. Check the underside… Pale speckling · Visible bugs · Webbing · Yellowing
• Pest Thrips: silvery scrapes and black specks Silvery or pale scraped patches with tiny black specks point to thrips. Look for the slender insects themselves before you… Pale speckling · Silvery patches · Visible bugs · Buds
• Watering Underwatering: a light pot and a limp plant A limp plant in a pot that feels very light probably just needs water. Water it slowly until the whole… Browning / necrosis · Stunted growth · Wilting or drooping · Yellowing
• Pest Whiteflies: a white cloud when you shake the plant Tiny white insects that fly up when you water or brush the plant are whiteflies. Keep a yellow sticky card… Sticky or shiny residue · Visible bugs · Wilting or drooping · Yellowing
• Nutrient deficiency Yellowing lower leaves: what it is, and when it’s nothing Before anything else: if you're six or more weeks into flower and it's only the bottom leaves, this is probably… Yellowing · Lower fan leaves