The effect of treeshelters on shoot/root development of some ornamentals grown in containers or in the landscape

"The study was designed to test the efficacy of treeshelters on selected container-growth trees in the nursery and on redwood seedlings transplanted into the landscape. Treeshelters accelerated shoot growth of southern magnolia, holly oak and deodar cedar but root growth was reduced during the first growing season as compared to the controls. Sufficient shoot/root development of the trees was achieved only after two growing seasons. One-year-old redwood seedlings successfully established themselves whether growth in treeshelters or not, while receiving 1/7 to 1/14 as much water as they would in a nursery bed grown in one-gallon containers. The seedlings in treeshelters grew significantly taller." [Abstract]

[Morton Arboretum, Sept. 30-Oct. 1, 1993]

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