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  • Answered by
    Downtoearthdigs on
    October 23, 2018
    A.

    You may cut back any branches that are showing any signs of dying off. Cut back to the part that is still alive. They will recover as long as you keep them out of the cold. Here is an article with more information on their care: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/hibiscus-container-care.htm

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  • Answered by
    Downtoearthdigs on
    October 30, 2018
    A.

    You should only cut the dead blooms once they are done. In the spring you may prune out any dead growth, but I wouldn't cut them all the way back, as this will hinder the flowering process. Here is an article for more information: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/tips-for-pruning-hibiscus-plants-when-to-prune-hibiscus.htm

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  • Answered by
    drtreelove on
    November 4, 2018
    A.

    Hibiscus rosa-sinensis (Chinese hibiscus)

    Hibiscus, unless they are a cold tolerant species, cannot take freezing temperatures.
    https://homeguides.sfgate.com/much-cold-can-hibiscus-stand-68229.html

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  • Answered by
    Downtoearthdigs on
    November 27, 2018
    A.

    This is very common for a number of reasons. If the weather has changed quickly, or the plant has been moved, then this can occur. This is also an issue if the plant does not receive adequate light. Underwatering or overwatering may cause this as well as not enough phosphorus and potassium in the soil.

    This article will help: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/hibiscus-flowers-hibiscus-blossoms-falling-off-plant.htm

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  • Answered by
    MichiganDot on
    December 14, 2018
    A.

    When you water, water from the top and never, never let the plant sit in standing water. While it doesn't treat the soil, try yellow sticky traps to rid yourself of flying gnats. Sticky pad traps can be found at hardware stores.

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  • Answered by
    drtreelove on
    December 13, 2018
    A.

    Here's an article about fungus gnats:
    https://www.smallfootprintfamily.com/how-to-control-fungus-gnats-organically

    Water the hibiscus in winter only when the soil is dry; don't overwater.
    https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/how-to-care-for-hibiscus-plants.htm

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  • Answered by
    BushDoctor on
    December 21, 2018
    Certified Expert
    A.

    There is no good way to tell, visually, if a seed is viable. There is an easy way to test them, though. Place a few in a very slightly damp paper towel and place them in a dark drawer in a sealed ziplock bag. Check them once per day until you see something happening. If 2 weeks pass and you don't see anything, then you can throw them out. They will not be viable if they haven't started by then.

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