Roots - Knowledgebase Question

Chula Vista, CA
Question by jamelin
September 22, 2004
I need to know the root growth (if it grows down or across) for the following: Schefflera pueckleri, Dicksonia antartica (tasmanian tree fern), Ensete ventricosum 'maurelii'(maurelii abyssinian banana), & Syagrus romanzoffianum (queen palm). Please help me out.


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Answer from NGA
September 22, 2004

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Root growth and development depends a great deal on the soil type and environmental conditions the plant experiences. As a general rule of thumb, roots extend out as far as the dripline of the canopy of a tree or shrub and are concentrated in the top 8-18" of soil. Some very large trees with wide canopies (such as maples and oaks) can have surface roots extending out about twice as far as the diameter of the canopy. The tropical plants you list will have similar root system growth; 8-18" in depth and about as far out as the longest branches, stems or fronds.

Hope this answers your question!

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