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Reasons Why Ivy Leaves Turn Black and How to Fix It

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Blackened ivy leaves may be caused by temperatures below 5°C, or by sooty mold that develops when scale insect excrement sticks to the leaves and grows mold. If it is caused by low temperatures, place the plant in a warm spot to let it recover; if it is caused by sooty mold, wipe it off with a used toothbrush or soft cloth, then dip the cloth in neutral laundry detergent water and wash the leaves clean.

I. Causes

When low temperatures drop below 5°C or hover around 0°C, ivy leaves turn from green to a dark green with a purple tinge. Also, during the growing season when temperatures are clearly above 5°C, the leaves may still turn black, especially in summer; this situation is caused by sooty mold, which means scale insects have already infested the plant, their excrement sticks to the leaves, and then mold grows into sooty mold, resulting in the blackening.

II. Solutions

If it is caused by low temperatures, move the plant to a warm area, and these dark purple leaves will turn green again.

If the leaves turn black in summer or during the growing season, first remove the scale insects completely. Scale insects generally appear on the underside of leaves or on leaf stalks and branches; wipe them off with a used toothbrush or soft cloth, then dip it in a little neutral laundry detergent water and wash the black off the leaves, and afterward rinse the leaves clean with water. This will solve the problem of blackened leaves.

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