Dendrochronological Dating of Two Tulip Poplars on the West Lawn of Monticello

Dendrochronological analysis of two tulip poplars (Liriodendron tulipifera L.) at Monticello reveals that the northwest tree likely dates to 1808, while the southwest tree's innermost rings suggest a planting date around 1852. These findings, combined with historical photographs, support the hypothesis that the northwest tree and possibly the southwest tree were planted during Thomas Jefferson's era. The study employed cross-dating and statistical verification using an oak chronology from Monticello to determine the trees' ages despite decay and hollow bole issues. This research provides critical insights into the historical significance of these iconic trees, shedding light on their potential connection to Jefferson's tenure at Monticello.

Druckenbrod, D. L., & Chakowski, N. (2014). Dendrochronological Dating of Two Tulip Poplars on the West Lawn of Monticello. Tree-Ring Research, 70(1), 41–48. https://doi.org/10.3959/1536-1098-70.1.41