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Top Questions About Lilac Bushes

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Questions About Lilac Bushes

  • Answered by
    BushDoctor on
    September 14, 2017
    Certified Expert
    A.

    This seems to be a fungal issue. there are a few things that I recommend for fungal infections. First, you will want to prime the ground with dolomitic lime, then spread wettable sulfur to Kill off any infection in the soil. I Also like to spray the plant itself. Mix a few drops of one or more of these ingredients into warm water with a spoonful of coconut oil: Rosemary oil, lavender oil, neem oil, garlic oil, cinnamon extract/oil and for really bad cases, also add clove oil. This will kill off any infection on the plant itself.

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  • Answered by
    MichiganDot on
    October 1, 2017
    A.

    The best time to prune lilac is right after it blooms. Remove old stems and crowded new growth in the center. This will give you more blooms as lilac blooms best on young wood and a more open structure helps prevent powdery mildew.

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  • Answered by
    MichiganDot on
    October 2, 2017
    A.

    As the Illinois extension service says, rabbits will eat just about anything. It depends on the winter severity. Try encircling the shrub with 24 inch tall hardware cloth or chicken wire. Next spring's new shoots are more at risk than bark.

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  • Answered by
    BushDoctor on
    October 3, 2017
    Certified Expert
    A.

    If you cut it 6 to 8 inches above the ground, then it will have a better chance, but it should come back up if the shrub was pruned to the ground. Just be aware that it will take about 3 years before it will flower again after such a heavy pruning.

    Here is an article that will help: https://www.gardeningknowhow.com/ornamental/shrubs/lilac/pruning-lilac-bushes-when-to-trim-lilac-bushes.htm

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  • Answered by
    peptroy on
    October 3, 2017
    A.

    Yes, it should do. We cut 2 back a couple of years ago and they still send out new shoots throughout the year. We actually were trying to get rid of them as they are very old and had started to lean very heavily one way to get away from ash trees towering at the side of them. Shame as I did love them. We left the roots in the ground after sawing the tree right down, but they still keep trying to grow. They are quite tough. Careful when you cut it as you could lose the flowers in the spring if you prune it the wrong time.

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  • Answered by
    BushDoctor on
    October 21, 2017
    Certified Expert
    A.

    Yes, I like to mix a little rosemary, and neem oil together in some warm water and spray the plants. This is a safe and natural way to rid them of the mildew. Here is an article for more information: https://www.gardeningknowhow.com/houseplants/anthurium/anthurium-care.htm

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  • Answered by
    MichiganDot on
    October 21, 2017
    A.

    There are several home remedies but research is not all that encouraging on effectiveness. Neem oil is one you might try although it is said to be better at preventing fungal infection than treating it. 5% apple cider vinegar, 3 Tbsp, in a gallon of water is another: spray tops and bottoms of leaves every 3 days X 3 applications. Baking soda spray: 4 tsp baking soda, 1 Tbsp horticultural oil OR citrus oil in one gallon water. Spray leaves every 3 days X 3. Lilacs are prone to powdery mildew. Prune it to allow more air circulation: remove up to 1/3 of the largest branches annually after blooming and remove most of the small shoots that arise from the base of the plant as well as suckers. Water deeply during hot, dry weather to prevent re-infection. Clean all plant debris after leaf fall and do not compost these leaves.

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  • Answered by
    BushDoctor on
    October 31, 2017
    Certified Expert
    A.

    I would advise waiting again. Planting it now may kill it, as it won't have time to get established. You may have to put them in a bigger pot with some fresh soil to help them out until you can plant them in spring. Here is an article for tips on growing the shrub: https://www.gardeningknowhow.com/ornamental/shrubs/lilac/lilac-care-growing-and-planting-lilac-bush-plants.htm

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  • Answered by
    MichiganDot on
    November 30, 2017
    A.

    All spring-blooming shrubs should be pruned after blooming and no later than July 1st (January 1 in the southern hemisphere). Remove up to 1/3 of the oldest branches to the ground and the spent blooms. Prune out many of the thin branches that spring up in the center and other branches that grow toward the center of the plant instead of outward. This improves air circulation which helps to reduce the risk of powdery mildew. Avoid giving shrubs a "haircut" - trimming the tips of branches to control height.

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