For young or small trees grown from seed – seedlings and transplants – it is necessary to specify the age and condition of the tree.
Within these definitions the following conventions are followed: + or / indicates transplanting; u or = indicates undercutting.
NPS Conifers Age – Condition
|1+0 or 1/0||A 1 year old seedling which has not been transplanted|
|1+0= or 1/0=||A 1 year old undercut seedling|
|1u1||A 2 year old seedling, undercut after 1 year but not transplanted from the seedbed|
|2+0 or 2/0||A 2 year old seedling which has not been transplanted|
|2u2||A 4 year old seedling, undercut after 2 years but not transplanted from the seedbed|
|1+1 or 1/1||2 year old seedling transplant; 1 year in seedbed, transplanted and grown on for one year|
|1+2 or 1/2||3 year old seedling transplant; 1 year in seedbed, transplanted and grown on for 2 years|
|2+1 or 2/1||2+1 or 2/1 3 year old seedling transplant, 2 years in seedbed, transplanted and grown on for 1 year|
|2+2 or 2/2||4 year old seedling transplant, 2 years in seedbed, transplanted and grown on for 2 years|
Number of times transplanted
Transplanting (or undercutting) encourages a compact and fibrous root system and enables the easier and more successful supply and establishment of plants. Conifers should be transplanted or undercut every two years. Specimen conifers must be transplanted at least every four years. In exceptional circumstances a specimen can be sold five years after transplanting, but, if this is the case, it must be stated.
|Overall height||No of times transplanted (x transplanted)|
|Up to 100 – 125 cm; dependent on species||2 – 4 times (2 – 4 x)|
|Over 125 cm; Specimen plants||4 – 6 times (4 – 6 x)|