Bugs or pests

How to tell

Tiny yellow/white speckling on leaves, fine webbing in advanced cases, visible with a magnifier as small moving dots on leaf undersides

Fix

Increase humidity slightly (mites prefer dry conditions), and treat with insecticidal soap or neem oil, covering leaf undersides thoroughly

How to tell

Small flying insects around the soil surface, larvae visible in top layer of wet soil

Fix

Let the top inch of soil dry out between waterings (larvae need moisture to survive) and consider yellow sticky traps

How to tell

Small clustered insects on new growth and stems, sometimes with a sticky residue (honeydew) nearby

Fix

Insecticidal soap or a strong water spray for light infestations; introduce ladybugs for larger outdoor grows