| 11. | It was followed by Arboretum in 1975 and VeldenVlei in 1980.
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| 12. | About one-quarter of the Arboretum is covered by forest.
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| 13. | The total land for the arboretum and gardens is 360 acres.
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| 14. | The Arboretum features plants tolerant of central Ohio's climate.
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| 15. | Hyson Green is spread over Berridge and Arboretum wards of Nottingham.
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| 16. | Lindsay Pryor National Arboretum is located on the peninsula as well.
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| 17. | In 1967, the arboretum was established and initial work began.
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| 18. | The arboretum is located within the association's nature reserve.
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| 19. | The Friends of the Frelinghuysen Arboretum Commission was founded in 1972.
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| 20. | The planting can be seen on display at the National Arboretum.
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