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  • Answered by
    Downtoearthdigs on
    March 24, 2015
    A.

    Perhaps you could directly contact the manufacturer to inquire about purchasing different quantities of their product.

    Here is a link that may offer you some alternatives to rid the spider mites.

    Good Luck!

    https://www.gardeningknowhow.com/plant-problems/pests/insects/spider-mite-control.htm

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  • Answered by
    Downtoearthdigs on
    April 20, 2015
    A.

    Here is a link that recommends choosing one leader and removing the others.

    https://www.cals.uidaho.edu/edcomm/pdf/BUL/BUL0644.pdf

    https://www.gardeningknowhow.com/ornamental/trees/colorado-blue-spruce/care-for-colorado-spruce.htm

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  • Answered by
    shelley on
    April 21, 2015
    Certified Expert
    A.

    If the upper branches provide too much shade, the lower branches naturally die off.

    On a more serious note: It could be Cytospora Canker, Rhizosphaera Needle Cast, or Stigminia Needle Cast, which are all discussed in detail on the following website:

    https://www.extension.iastate.edu/harrison/news/common-diseases-blue-spruce
    https://www.ipm.iastate.edu/ipm/hortnews/2008/2-6/Stigmina.html

    It could also be the handiwork of a spruce spider mite:
    https://extension.psu.edu/ipm/program/christmas-tree/pest-fact-sheets/needle-discoloration-and-injury/spruce-spider-mite.pdf

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  • Answered by
    Downtoearthdigs on
    June 18, 2015
    A.

    It may be that the plants are getting too much water. outdoor plants only need about 2-4" of water a week, including rainfall, during the spring and summer. If they are getting more than that and the ground is not draining, the roots could be rotting. You need to make sure that the plants are only getting the amount of water they need and that they are not in standing water.

    Another possibility is that there are grubs. The ground may have grubs that are attacking the grass and the root of the shrubs. This article will help you with that:
    https://www.gardeningknowhow.com/plant-problems/pests/lawn-grubs-how-to-get-rid-of-grub-worms.htm

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  • Answered by
    Downtoearthdigs on
    July 22, 2015
    A.

    I would not recommend it. Zone 7 is as far south as it will grow and then it's stressed from the summer heat. However, you may want to check out the Arizona cypress. This would be a better choice and great substitute.

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  • Answered by
    Downtoearthdigs on
    September 13, 2015
    A.

    You will not need to winter the trees inside.
    The are winter hardy to zone 3.
    Continue to water the trees into the dormancy and add a small amount of water a few times throughout the winter.

    https://www.gardeningknowhow.com/ornamental/trees/colorado-blue-spruce/care-for-colorado-spruce.htm

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