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Top Questions About Marigolds

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Questions About Marigolds

  • Answered by
    MichiganDot on
    July 4, 2018
    A.

    Marigolds come in all sizes. It sounds like you have one of the taller ones and the plants are putting their energy into growth. Once they have reached mature height the blooming commences. Don't fertilize as high levels of nitrogen favor green leafy growth over flowers. Some compost on top of the soil should be sufficient for marigolds unless your soil is quite poor. If bloom starts to lag in late summer, try some liquid fertilizer for a quick boost. Also, if you are having a heat wave, that will delay blooming. Even if well-watered, severe heat is a plant stressor.

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  • Answered by
    MichiganDot on
    July 10, 2018
    A.

    Calendulas are cheerful flowers but they are best thought of as annuals. Where winters are warm, they may come back for a year or two but not longer (short-lived perennial). Most of us rely on seed that falls in autumn ands germinates in spring to provide new plants every year. As frost approaches, leave the dead flowers on the plant so there will be lots of seed. Why yours did not self-sow can also be a weather issue. If winter was colder or wetter than usual, the seed may not have survived. I live in Michigan where seeds may not make it through the winter; so gardeners collect seed in the fall. Keep the seeds in a glass jar in the refrigerator and sprinkle them out in spring after danger of frost has passed. This is the one method that ensures you will have lots of calendula every year.

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  • Answered by
    Downtoearthdigs on
    July 11, 2018
    A.

    Slugs eat large holes in mature marigold leaves and will completely devour young plants. You won't commonly see slugs feeding on your marigolds because slugs are nocturnal, but you may see the slime trails they leave behind.
    Birds, rabbits and disease could also strip leaves.

    https://www.gardeningknowhow.com/plant-problems/pests/insects/kill-garden-slugs.htm

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  • Answered by
    MichiganDot on
    July 28, 2018
    A.

    Using plants to deter any pest is a questionable practice. Some swear by it and others have your experience. The few science studies I've seen do not show consistent evidence that specific plants can be used to deter pests or wildlife. Consider treating your lawn from Japanese beetle grubs. Contact your state extension service for the correct time to treat for grubs. Timing is crucial in grub control.

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  • Answered by
    Downtoearthdigs on
    August 12, 2018
    A.

    The flowers may have been damaged in transport or planting, you can pinch off the broken flowers.
    These links will help you.

    https://www.gardeningknowhow.com/ornamental/flowers/marigold/growing-marigold-flowers.htm
    https://www.gardeningknowhow.com/ornamental/flowers/marigold/deadheading-marigold-plants.htm

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  • Answered by
    Downtoearthdigs on
    August 13, 2018
    A.

    It sounds like is could be Powdery Mildew.

    This article will help you.

    https://www.gardeningknowhow.com/plant-problems/disease/get-the-cure-for-powdery-mildew.htm

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  • Answered by
    Downtoearthdigs on
    August 15, 2018
    A.

    You may have several varieties of Marigolds, from the seed packet.

    Lack of flowers can be growing conditions, pests, not enough sunlight or too much fertilizer or nitrogen in the soil.

    This article will help you.

    https://www.gardeningknowhow.com/ornamental/flowers/marigold/marigolds-will-not-bloom.htm

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