ARBORVITAES - Knowledgebase Question

LINDENHURST, Ne
Question by JOHNNNYYB
April 13, 2010
MY NORTH & SOUTH PROPERTY LINES ARE PLANTED WITH THUJA OCCIDENTALIS 'SNARAGD'THE NORTH SIDE IS GROWING VERY WELL WHILE THE SOUTH SIDE JUST KEEP THINNING OUT & DIEING OFF YEAR AFTER YEAR THERE ARE 2 LARGE CEDAR TREES & 1 LARGE WHITE PINE 30 PLUS FEET TALL ALL THREE ARE LIMBED UP AS NOT TO BLOCK SUN FROM ARBORVITAES COULD THE TREES BE CREATING A SOIL ENVIRONMENT NOT SUITED TO THE ARBORVITAES.


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Answer from NGA
April 13, 2010

0

No doubt there's some competition from the tree roots for moisture and nutrients but watering your arborvitaes on a regular basis should keep the competition to a minimum. When arborvitaes thin out it's usually due to lack of sufficient light but if your trees do not block the sunlight, the only other cause is soil related. Perhaps the site doesn't drain as well as it should? Saturated soils can drive out oxygen, which can compromise the health of the roots - in this case not enough to kill them outright and suddenly, but enough to keep them from healthy, vigorous growth. Wish I had more insight to share.

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