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Top Questions About Mexican Petunias

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Questions About Mexican Petunias

  • Answered by
    Nikki on
    February 15, 2014
    Certified Expert
    A.

    It sounds like it is a fungus, but it will be hard to confirm without a picture. Can you please send us a picture of the plant? If it is a fungus, a fungicide will help correct it.

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  • Answered by
    Agronoman on
    February 16, 2014
    A.

    There is a soil borne fungus that actually consumes organic matter in the soil. Occasionally, it progresses to the extent it affects your desirable plants. As a home owner, your best bet would be to drench the soil with a mix of water and hydrogen peroxide. Include a few drops of soap as the fungus repels water which makes control in the soil difficult.

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  • Answered by
    Downtoearthdigs on
    July 15, 2015
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  • Answered by
    Alisma on
    December 16, 2016
    Certified Expert
    A.

    If the whole plant has been killed back to the ground, you can cut off all the foliage. The plant should grow back from the roots in the spring. If just the tips of leaves have been damaged by the cold, it's best to leave the plants standing until spring.

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  • Answered by
    Downtoearthdigs on
    July 5, 2017
    A.

    Try feeding them with a phosphorus fertilizer, such as Bone Meal.
    This article has more information.
    https://www.gardeningknowhow.com/ornamental/flowers/petunia/petunia-plant-no-flowers.htm

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  • Answered by
    GKH_Susan on
    July 9, 2021
    Certified Expert
    A.

    This article should help. You need to be careful about which variety you buy as some are invasive.

    https://plants.ces.ncsu.edu/plants/ruellia-simplex/

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