Why Plants Die
Theme

Why is my plant dying?

What is your plant doing?

Pick what you noticed first. A few questions about the soil, the window and the watering separate the likely causes, and the answer says when they do not.

Common problems

Pests and growths, one page each

  • Aphids Aphids pierce the soft tissue of a plant with slender mouthparts and drink its sap.
  • Fungus gnats If small dark flies drift up from a pot when you water it, or walk over the surface of the potting mix, they are almost certainly fungus gnats.
  • Mealybugs Tufts of white cotton tucked where a leaf meets its stem are usually the first thing people notice. Underneath that wax sit soft, slow insects drinking sap.
  • Mold on the soil People say "mold on the soil" about several unrelated things that appear on top of potting mix. A fungus makes a soft white or gray layer.
  • Root mealybugs A potted plant that turns pale, stalls and wilts, with nothing wrong that you can find on its leaves, may be feeding a colony underground.
  • Scale insects Scale insects rarely look like insects at all. What most people notice first is a scatter of small brown, tan or whitish bumps along a stem or beside the cen…
  • Spider mites The first sign is usually a leaf that looks faintly sandblasted.
  • Thrips Thrips are easier to recognize by their leftovers than by sight.
  • Whitefly Brush against an infested plant and a small cloud of white specks rises from it. Those specks are adult whiteflies, and the flying adults are the least of it.

Not sure what it is? Start the diagnosis questions

Problems on particular plants

Plants people ask about most

All 113 plants

Where the figures come from

Every care figure here names the published source it came from and the date it was read. Where two sources disagree, the page shows both and says so.

What this does not cover

Nothing here measures your room, and the things that decide most outcomes, such as how far the plant stands from the glass, what the pot is made of, and whether the radiator is under the windowsill, are not in any source and could not be.