English ivy, a common ground cover, has a history of spreading mould spores. Fungus and bacteria grow readily on ivy plants and are spread to nearby plants by wind, rain and sprinkler systems. Water spreads mould spores quickly by hitting the plant and causing the spores to bounce off and spread. Control infections in your ivy with these spore reducing strategies.
Clip leaves that contain red or brown mould spots. Fungus makes small spots on the leaves where spores breed.
Water the ivy with a drip hose as opposed to sprinkler or watering can. Water hits the leaves and spreads the spores. Drip hoses lay around the ivy and slowly drip water directly into the ground.
Cover the ground around and under the ivy with mulch. Mulch helps eliminate the back splash caused by pouring water and rain.
Apply a fungicide as needed if you can't control it naturally. Lawn and garden stores sell a variety of fungicide. All natural fungicide is available.
Only take clippings from the top of the plant for transplanting as they are less likely to have spots. Water ivy early in the day so it has time to dry before evening dew sets in. Wet conditions breed fungus, so the drier you can keep the leaves, the better.