Conifers – Summary

This table gives information typically used in the specification of conifers. It is important to realise that plants are variable and growth varies between species and seasons. For this reason the details within the table give general, accepted dimensions and terms for the specification of conifers but there are always well grown and health plants which are exceptions. A knowledge of the product and the methods of its productions are important in specifying plants.

Values shown in bold type indicate the more typical for the range.

 NPS Conifers Summary

AGE/CONDITION or x TRANSPLANTED OVERALL HEIGHT GIRTH ROOT PROTECTION SIZE OF CONTAINER HABIT NOTES
in cms RC = root collar (mm)
SD = stem dia. (mm)
G = girth (cm)
B = bagged (bareroot)
Ce = cell grown
RB = rootball
C = container
MIN SIZE/RANGE given in LITRES unless otherwise indicated Root collar measures only
apply for seed raised
trees up to 60 cm height
1+0 or 1/0 10-15, 15-20, 20-25, 25-30, RC: 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5 B Forestry seedlings
e.g. Pinus sylvestris ,
Pinus nigra, Piceaabies,
Picea sitchensis,
Tsuga heterophylla
1+0 or 1/0 10-15, 15-20, 20-25, 25-30, RC: 2, 3, 4, C 100, 125, or 235 cc. Forestry seedling grown
in Japanese Paper pots,
1+0 or 1/0 10-20, 20-40,
40-60, 60-90
RC: 3, 4, 6, 8 Ce 50, 100, 200cc Forestry seedlings:
e.g. Pinus nigra,
Pinus sylvestris,Picea abies ,
Picea sitchensis
1+0= or 1/0= 10-15, 15-20, 20-25, 25-30, RC: 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5 B Forestry seedlings:
Not so commonly grown
1u1 25-30, 30-40, RC: 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5 B Forestry seedlings:
Not so commonly grown
2+0 or 2/0 30-40, 40-50, 50-60, 60-80 RC: 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5 B Forestry seedlings:
Not so commonly grown
2u2 30-40, 40-50, 50-60, 60-80 RC: 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5 B Forestry seedlings:
Not so commonly grown
1+1 or 1/1 25-30, 30-40, 40-50, 50-60, 60-80 RC: 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5 B Forestry transplants:
e.g. Pinus sylvestris,
Pinus nigra, Piceaabies,
Picea sitchensis,
Tsuga heterophylla
1+2 or 1/2 25-30, 30-40, 40-50, 50-60, 60-80 B Forestry transplants:
e.g. Pinus sylvestris,Pinus nigra, Piceaabies, Picea sitchensis,Tsuga heterophylla
2+1 or 2/1 30-40, 40-50, 50-60, 60-80 RC: 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5 B Forestry transplants:Not so commonly grown
2+2 or 2/2 30-40, 40-50, 50-60, 60-80 RC: 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5 B Forestry transplants:Not so commonly grown
2 – 4 x Height or spread: 40-50, 50-60, 60-70, 70-80, 80-90, 90-100, 100-125, RB (3x girth at the root collar) Bushy; Dwarf/bushy typese.g. Chamaecyparisobtusa ‘NanaGracilis’, Juniperussquamata ‘Blue Star’,Picea glauca ‘ AlbertaGlobe’,
Pinus mugo pumilio
4 – 6 x Height or spread: 125-150, 150-175, 175-200, above 200 in 50 cm. Steps. RB (3x girth at the root collar) Bushy; Dwarf/bushy types:e.g. Chamaecyparisobtusa ‘NanaGracilis’, Juniperussquamata ‘Blue Star’,Picea glauca ‘ AlbertaGlobe’, Pinus mugopumilio
2 – 4 x Height: 60-70, 70-80, 80-90, 90-100, 100-125 RB (3x girth at the root collar) Branched; Prostrate: medium/vigorous :e.g. Juniperushorizontalis cvs.,Juniperus x media ‘Pfitzeriana’
2 – 4 x Height: 60-70, 70-80, 80-90, 90-100, 100-125 RB (3x girth at the root collar) Leader and Laterals; Single Leader (furnished to base); Upright growing: medium: e.g.Chamaecyparislawsoniana’Ellwoodii’
Pinus mugo, Thujaoccidentalis’Rheingold’,
Taxus baccata’Fastigiata’
4 – 6 x Height: 125-150, 150-175, 175-200, 200-225, 225-250, 250-275, 275-300 RB (3x girth at the root collar) Leader and Laterals; Single Leader (furnished to base); Upright growing: medium:e.g.Chamaecyparislawsoniana’Ellwoodii’
Pinus mugo, Thujaoccidentalis’Rheingold’,
Taxus baccata’Fastigiata’
2 – 4 x Height: 60-80, 80-100, 100-125, 125-150 RB (3x girth at the root collar) Leader and Laterals; Single Leader (furnished to base); Upright growing: vigorous: e.g. Cedruslibani; Chamaecyparislawsoniana; xCupressocyparisleylandii; Thujaplicata + cvs.
4 – 6 x Height: 150-175, 175-200, 200-250, 250-300, 300-350, 350-400 RB (3x girth at the root collar) Leader and Laterals; Single Leader (furnished to base); Upright growing: vigorous: e.g. Cedruslibani; Chamaecyparislawsoniana; xCupressocyparisleylandii; Thujaplicata + cvs.
Height and Spread:
15-20, 20-30, 30-40
C 0.5, 1, 1.5, 2, 3, 4, 5, 7.5, 10, 15 Branched; Bushy; Dwarf/prostrate types: e.g.
Chamaecyparis spp. (dia), Juniperus spp. (dia), Picea spp,Tsuga spp. (dia)
Height and Spread:
20-30, 40-50, 50-60, 60-70
C 0.5, 1, 1.5, 2, 3, 4, 5, 7.5, 10, 15 Leader and Laterals; Single Leader (furnished to base); Upright growing:Medium and vigorous types: e.g. Abiesspp., Cedrus spp.,Chamaecyparis spp, .x Cupressocyparisspp., Juniperus spp.
G:18-20; 20-25; 25-30; 30-35; 35-40; 40-45; 45-50; 50-60 RB (3x girth at 1 metre) Limited number of Semi Mature conifers grown in Standard form: e.g. Pinus spp.

Other Information

Where appropriate other criteria can be specified. The following are examples:

Criterion Qualification Notes
Origin/Provenance British grown Refer to Part 1. Note that British grown is not reliably British provenance or origin
British provenance
Local provenance
Shape Cone
Sphere
Spiral
Columns
Other shapes
More detailed information on the other criteria necessary for the specification of these shapes (girth measures, branch lengths, root condition, size of container, etc.) can be obtained from the specialists who supply these conifers. Taxus spp.