Edema (plants)

Edema symptoms in plants

Edema showing indentations on the top side of Anthurium regale leaf

Edema on underside of Annona macroprophyllata leaf

A case of edema occurring on a water spinach (ipomoea aquatica) seedling showing corky growths and white crusty eruptions

Edema, (also spelled oedema, and named from the analogous disorder in humans and other animals), is a disorder in plants caused by the build-up of water in plant tissues faster than the leaves can transpire.^[1][2] The excess fluid bursts the cell membranes, causing the appearance of growths, particularly on the underside of leaves.^[3]