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  • Answered by
    GKH_Susan on
    December 6, 2021
    Certified Expert
    A.

    Tropical hibiscus can't tolerate freezing temperatures but it's possible the temperature was below freezing only a short time. Cut off any visibly damaged stems and hope for the best. Here is more help for freeze-damaged plants:

    https://www.gardeningknowhow.com/plant-problems/environmental/how-to-treat-frozen-plants.htm

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  • Answered by
    luis_pr on
    December 3, 2021
    A.

    They normally respond but at different levels of cold since there are various types of hibiscuses. A quick dip below 32°F followed by above freezing temps may not result in much damage provided the soil was kept moist. Of all the varieties, rosa-sinensis (aka, troppical hibiscus) is the most cold sensitive. Bring the plants indoors once overnight temperatures begin to drop below 50°F. Bring it outside in spring 2022 after your average date of last frost, which is around the 2nd/3rd week of April for Thomasville. At times, the damage may not be obvious immediately thereafter. Place the pot away from hot/cold air vents and near a south facing glass window or door but not touching the glass.

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  • Answered by
    GKH_Susan on
    January 14, 2022
    Certified Expert
    A.

    You can leave the plastic on till there is root development, i.e., new leaves developing within 8 weeks. You can also lightly pull on the stems (do not pull them out). If they resist, they have rooted.

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  • Answered by
    GKH_Susan on
    January 16, 2022
    Certified Expert
    A.

    It doesn't look like hibiscus seedlings. They would have small, round leaves. I'd say some seeds blew in there while it was outside and are growing. Think about what else you grow outside that might look like those. It also could be weed seeds.

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  • Answered by
    GKH_Susan on
    March 4, 2022
    Certified Expert
    A.

    Miticides are available, but they also kill the beneficial predatory mites. Pruning the shrub will help. Also remove the worst leaves with galls.

    Here is more information on their control:

    https://www.ctahr.hawaii.edu/oc/freepubs/pdf/ip-7.pdf

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  • Answered by
    GKH_Susan on
    March 6, 2022
    Certified Expert
    A.

    It looks like a cotton harlequin bug or hibiscus harlequin bug but there are a lot of varieties and they all look different!

    https://www.gardeningknowhow.com/plant-problems/pests/insects/get-rid-of-harlequin-bugs.htm

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  • Answered by
    BushDoctor on
    March 4, 2022
    Certified Expert
    A.

    Typically, many types of Hibiscus blooms will only last a day! This will be normal. It is likely that, either, they bloom and are missed, or there is not adequate light for the blooms to finish, and even too much nitrogen can cause blooms to fall off.

    This article will help to offer more information on the subject:

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

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