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Gardening Know How Questions & Answers - https://questions.gardeningknowhow.comWhat causes it to yellow? I’ve had it 10 years and never saw this happen.
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URL to article: https://questions.gardeningknowhow.com/umbre/
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[1] https://www.gardeningknowhow.com/ornamental/trees/umbrella-pine/umbrella-pine-planting.htm: https://www.gardeningknowhow.com/ornamental/trees/umbrella-pine/umbrella-pine-planting.htm
[2] https://www.apsnet.org/publications/PlantDisease/BackIssues/Documents/1983Articles/PlantDisease67n06_698.PDF: https://www.apsnet.org/publications/PlantDisease/BackIssues/Documents/1983Articles/PlantDisease67n06_698.PDF
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1 Comment To "Umbrella pine"
#1 Comment By Downtoearthdigs On 05/05/2016 @ 10:37 pm
In my research I found many reports of the Umbrella Pine taking on a yellow cast to the needles during winter with the tree shedding these needles and returning to it’s normal green color during the growing season.
A soil test is a good idea to check the soil, as this tree prefers a slightly acidic soil.
https://www.gardeningknowhow.com/ornamental/trees/umbrella-pine/umbrella-pine-planting.htm [1]
It is possible that a yellowing tree could indicate a more serious issue and I’ve listed this link to give you more information and what to look for.
https://www.apsnet.org/publications/PlantDisease/BackIssues/Documents/1983Articles/PlantDisease67n06_698.PDF [2]