New growth

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 pot is… 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 or heat.… 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 the temperature… 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 before you… 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 of a… 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 mites. They're… 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 treat, because… 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 be knocked… 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 nearby and… 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 appear every…