Guist - Sennowe Hall (Norfolk)
|These are two Giant Redwoods at Sennowe Hall, one is beside the building and the other is across a field and sits alongside one of the long driveways.
They were both in fine health and a substantial size, and in fact the one across the field from the building was just a fraction taller than those measured at Sandringham House during the same week.
|* * * Update - February 2020 * * *
Thanks to James (and Mr. Tom Cook) who sent this detailed account of his visit to Sennowe Park in January 2020
and the two one acre stands of Coast Redwood which I must have completely missed on my visit.
"Mr Tom Cook who planted two, one acre stands of Coast Redwood at Sennowe Park in 1964, kindly agreed to meet me in January 2016.
They stand at:
Latitude: 52.787189 Longitude: 0.932247 Elevation 30m
Latitude 52.792301 Longitude 0.932150 Elevation 40m
The south stand occupies a gentle slope south of the lakes about 1m to 5m above the lake line.
The north stand occupies a steeper slope to the north of the western lake at a higher elevation of approximately 10m above the lake.
The south stand is un-thinned while the other stand is under a thinning programme to see what the effect is.
Vigorous basal growth from cut stumps has already reached 25’ high true to the Coast behaviour.
Secondary seedling had taken root and in some cases had reached a height of three meters.
Both stands are surrounded by other woodland. When a large beech was removed to the east, this partly exposed the edge of the stand and three redwood did suffer windthrow, but these have survived and straightened over time. Mr Cook recounted one year when the canopy tops suffered wind frost damage leaving the canopy tops brown but they recovered after two years and now show healthy pointed tops with continued growth in height.
Two trees were measured as 30-33m high, with a basal girth of 2.28m / 0.73m diameter. Gaps between the stems varied between 1.90m and 6.00m or more, much of the canopy had joined between the trees and about 30% sky could be seen through the canopy. Some were planted very close but this had not impaired their development to date. A few original stems in the heavy shade of a large beech tree (200 years old) had very suppressed growth with 0.20m diameter trunks showing how redwood need direct sun to thrive.
The stands were planted on former forest ground with a good depth of topsoil and gravel substrate, Ph said to be neutral.
The exact depth of groundwater is unknown but the adjacent lake would probably contribute to a higher water table.
Squirrels had been busy stripping the bark of many trees although Mr Cook said this did not seem to affect the trees."
|Common Names and Latin Name||No.||Latitude and Longitude||OS National Grid||Elevation
|Giant Redwood |
|TF 98100 25569||48ft |
|TF 98315 25613||40ft |
|Girth was measured at 1.5 metres from ground|