A few types of molds that can strike Gerbera daisies, because they are susceptible to having leaves that are too moist. Gray mold and powdery mildew are common to these flowers. In climates that get frequent rains, a Gerbera daisy may develop leaf mold from the moisture delivered from the top. There are ways to keep these molds from spreading to the rest of the plant as well as to prevent new mold infections from starting.
Cut away any areas of the plant that have mold on them. A leaf that has mold may appear to have a white or gray powder on it, or it may have brown spots. Leaves that have brownish-gray masses on them that look like spider webs may also be infected with mold. Use scissors or a pruning shears to make clean cuts to get rid of moldy areas.
Keep mulch levels low around Gerbera daisies. If the leaves are allowed constant contact with the mulch, it will encourage fungal growth on the leaves. If you need to mulch around the plants, skip the areas around the base of the leaves.
Water the plants from the side to avoid getting too much moisture on the leaves. Use a watering can or hose to apply water to the soil next to the plants rather than watering them from the top. Top watering can aggravate a mold problem as well as encourage a new one. Keep the leaves dry whenever possible by drying them with a towel after a heavy rain.
Increase air circulation around the Gerbera daisy plant by giving it plenty of space. If it is planted too close to other plants, there may be inadequate air circulation, resulting in too much moisture on the leaves. Indoors, keep the plant in an area that gets plenty of air circulation. Outdoors, keep other plants at least 12 inches away from other plants.
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