Knightsbridge - Kinnerton Street (London)
|These two Dawn Redwood are mentioned in the Royal Horticultural Society magazine "The Garden" November 2005
Volume 130; Part 11, where the author, Roy Lancaster, says they were 3.6m (12ft) high when planted 20 years ago (circa 1985) and were 9m (30ft) and producing cones at time of writing (2005) This would signify a growth rate of .27m (just under 1ft) per year.
They are now both some 20m (65ft) high, so if the previous figure is accurate they would have achieved a growth of 3.6m (12ft) per year over the past 3 years. Perhaps more likely is that the 2005 measurement was rather under-generous and the two Dawns' growth rate over 33 years will have been 0.6m (2ft) per year - a far more realistic figure. The other possiblity is that the magazine article was either written much earlier than its published date, or was including much earlier data.
In the aforementioned RHS article: "Street tree revolution", Paul Akers (Arboricultural Manager for the City of Westminster) said that these two trees had established well, and following some initial crown lifting they now require minimal pruning.
|Common Names and Latin Name||No.||Latitude and Longitude||OS National Grid||Elevation
|TQ 28024 79538||44ft
|TQ 28025 79529||48ft
|Girth was measured at 1.5 metres from ground|