Torreya Guardians
Torreya taxifolia ex situ Conservation Project


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Seeds
Torreya taxifolia These 10 seeds, collected in Fall 2005, were sowed on the 16 May 2006 in individual tubes a few millimeter below the surface. They were kept moist. They were kept outside in a protected place allowing temperature variations. Coldest temperature was one or two degrees below 0°Celsius for a short time.
Medium: acidic compost.
  
Germination
Torreya taxifolia
Torreya taxifolia
Torreya taxifolia
Torreya taxifolia
Torreya taxifolia
The 2 first germinations were noticed on the 6 March 2007.
Althought the Winter was quite mild, the highest temperature was not above 18°C. and during the last month the temperatures were mainly around 10°C.
  
Seedlings
Torreya taxifolia 18 April 2007.
  
Torreya taxifolia The seedlings spent their first Winter under a frost free cold frame.
Growth is resuming after some warm days in February!
28 February 2008.


Torreya taxifolia Torreya taxifolia Seeds sowed on the 1st February 2010.
(Same set on different background.)

Torreya taxifolia		[mm]								
Biltmore Estate
		  a	  b	   	  c			
max		25.2	19.66	1.34	17.56	1.21						
min		21.1	16.7	1.20	14.4	1.12		3	5	12	2	
aver.		23.69	18.57	1.28	15.81	1.17						
							     < 22.7	   23.7	     > 24.7	
	 1	23.8	18.5	1.29	16.0	1.16				1			
	 2	24.4	18.5	1.32	15.5	1.19				1			
	 3	22.9	18.3	1.25	15.6	1.17			1				
	 4	24.9	19.1	1.30	16.3	1.17					1		
	 5	24.5	18.2	1.34	15.3	1.19				1			
	 6	23.6	18.6	1.27	15.5	1.20			1				
	 7	24.5	18.8	1.30	16.2	1.16				1			
	 8	24.2	18.9	1.28	16.0	1.18				1			
	 9	21.4	16.7	1.28	14.4	1.16		1					
	10	22.5	18.2	1.23	15.6	1.17		1					
	11	24.1	18.1	1.33	15.3	1.18				1	
	12	23.2	18.7	1.24	15.4	1.21			1		
	13	24.3	19.1	1.27	16.0	1.19				1	
	14	24.6	19.2	1.28	15.9	1.21				1	
	15	23.3	19.5	1.20	16.4	1.19			1		
	16	25.2	18.9	1.33	16.1	1.17					1
	17	23.9	19.7	1.22	17.6	1.12				1	
	18	24.1	19.0	1.27	16.5	1.15				1	
	19	23.7	18.5	1.28	15.8	1.17				1	
	20	21.1	17.5	1.21	15.1	1.16		1			
	21	24.0	19.5	1.23	16.3	1.20				1	
	22	22.8	17.1	1.34	14.9	1.15			1		

a b c
Torreya taxifolia Torreya taxifolia Torreya taxifolia



Photos : © Arboretum de Villardebelle
March 2007 - April 2007 - February 2008 - February 2010
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