{
  "page": "/us/lifespan/wood-fence",
  "built_from": "data/lifespan/facts/wood-fence.json",
  "rows": [
    {
      "type": "Pine, Poplar, Sycamore, Sweet Gum posts, untreated",
      "measure": "post life expectancy",
      "value": "3",
      "value_high": "7",
      "unit": "years",
      "source": "University of Georgia Cooperative Extension, Garden Fencing (2022)",
      "url": "https://fieldreport.caes.uga.edu/publications/C1027-9/garden-fencing/",
      "data_years": "Full review December 14, 2022; data years not published",
      "read": "2026-11-03",
      "area": "Georgia garden-fencing guidance",
      "n": "not published by the source",
      "se_points": "",
      "fact_id": "wood-fence-pine-untreated"
    },
    {
      "type": "Pine, Poplar, Sycamore, Sweet Gum posts, treated",
      "measure": "post life expectancy",
      "value": "25",
      "value_high": "30",
      "unit": "years",
      "source": "University of Georgia Cooperative Extension, Garden Fencing (2022)",
      "url": "https://fieldreport.caes.uga.edu/publications/C1027-9/garden-fencing/",
      "data_years": "Full review December 14, 2022; data years not published",
      "read": "2026-11-03",
      "area": "Georgia garden-fencing guidance",
      "n": "not published by the source",
      "se_points": "",
      "fact_id": "wood-fence-pine-treated"
    },
    {
      "type": "Cedar posts, untreated",
      "measure": "post life expectancy",
      "value": "15",
      "value_high": "20",
      "unit": "years",
      "source": "University of Georgia Cooperative Extension, Garden Fencing (2022)",
      "url": "https://fieldreport.caes.uga.edu/publications/C1027-9/garden-fencing/",
      "data_years": "Full review December 14, 2022; data years not published",
      "read": "2026-11-03",
      "area": "Georgia garden-fencing guidance",
      "n": "not published by the source",
      "se_points": "",
      "fact_id": "wood-fence-cedar-untreated"
    },
    {
      "type": "Cedar posts, treated",
      "measure": "post life expectancy",
      "value": "20",
      "value_high": "25",
      "unit": "years",
      "source": "University of Georgia Cooperative Extension, Garden Fencing (2022)",
      "url": "https://fieldreport.caes.uga.edu/publications/C1027-9/garden-fencing/",
      "data_years": "Full review December 14, 2022; data years not published",
      "read": "2026-11-03",
      "area": "Georgia garden-fencing guidance",
      "n": "not published by the source",
      "se_points": "",
      "fact_id": "wood-fence-cedar-treated"
    },
    {
      "type": "Redwood posts, untreated",
      "measure": "post life expectancy",
      "value": "10",
      "value_high": "15",
      "unit": "years",
      "source": "University of Georgia Cooperative Extension, Garden Fencing (2022)",
      "url": "https://fieldreport.caes.uga.edu/publications/C1027-9/garden-fencing/",
      "data_years": "Full review December 14, 2022; data years not published",
      "read": "2026-11-03",
      "area": "Georgia garden-fencing guidance",
      "n": "not published by the source",
      "se_points": "",
      "fact_id": "wood-fence-redwood-untreated"
    },
    {
      "type": "Redwood posts, treated",
      "measure": "post life expectancy",
      "value": "20",
      "value_high": "30",
      "unit": "years",
      "source": "University of Georgia Cooperative Extension, Garden Fencing (2022)",
      "url": "https://fieldreport.caes.uga.edu/publications/C1027-9/garden-fencing/",
      "data_years": "Full review December 14, 2022; data years not published",
      "read": "2026-11-03",
      "area": "Georgia garden-fencing guidance",
      "n": "not published by the source",
      "se_points": "",
      "fact_id": "wood-fence-redwood-treated"
    },
    {
      "type": "Double-diffusion-treated posts; exposure with no failures",
      "measure": "field exposure without failures",
      "value": "30",
      "value_high": "",
      "unit": "years",
      "source": "USDA Forest Service, Service life of fence posts treated by double-diffusion methods (1999)",
      "url": "https://research.fs.usda.gov/treesearch/34357",
      "data_years": "1999 report; 30 years of field exposure",
      "read": "2026-11-03",
      "area": "semiarid Central Plains near Nunn, Colorado",
      "n": "not published by the source",
      "se_points": "",
      "fact_id": "wood-fence-test-30"
    }
  ]
}