Plant husbandry – Plant supports – Vertical
Patent
1988-09-29
1991-07-16
Hafer, Robert A.
Plant husbandry
Plant supports
Vertical
47 77, A01G 1706
Patent
active
050313568
ABSTRACT:
A plant tube (6) for insertion into a plant pot (2) in a substantially upright position. The plant tube (6) includes an at least partly open, non-narrowing lower end (12), with at least one planar thin walled protrusion (20) provided at the lower end (12) for defining at least one root penetration opening enabling the roots of the plant in the plant tube (6) to freely penetrate radially outwardly and downwardly from the plant tube (6).
REFERENCES:
patent: 3188771 (1965-06-01), Ballai
patent: 4336669 (1982-06-01), Gordon
patent: 4347686 (1982-09-01), Wood
patent: 4457102 (1984-07-01), Ploeger, Jr.
Cofsky Lynda M.
Hafer Robert A.
Timmermann Poul
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