Root structure - Knowledgebase Question

Escalon, CA
Question by bradroot
June 19, 2005
I have Majestic Star Pines (Norfolk Island Pine, Araucaria). Can I plant them close to the house? Are the roots invasive? When planted close together, will it reduce height?

Answer from NGA
June 19, 2005


Norfolk Island Pines have the growth potential of reaching 100' feet in height and 60' in width. The roots are not considered invasive, but there will be a large root mass on a large tree. You can keep these trees smaller in both height and width by keeping them in containers, or placing a root restricting barrier in the soil prior to planting them. I still wouldn't plant them too close to the house. Even when kept on the small side, the trees will still spread in width. I'd give them a generous 10-12' from any structures and use a barrier in the soil (such as that used for containing bamboo). Best wishes with your new trees!

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