pcplantdb

[Richard Morris <webmaster@pfaf.org>]

Dudes,
	I managed to get the login for gaia college from Heidi and had a look 
around the website.

Heres a brief report:

Its all done as a set of wiki pages. For each plant its broken down into 
sections and each section further broken down in to subsections.

Each plant, section and subsection has its own wiki page. At first I 
though this might be a bit clumsy but its posible to click an "open all" 
button which allows all the sections of a plant to be displayed.

As far a relationships go these are broken down into Synergistic (good, 
companion plants)
Antagonistic  (bad)
eg for Asarum caudatum, wild ginger we have

Relationships

Synergistic
     	Grows well as a groundcover in a woodland planting, complimenting 
taller woodland acid-soil loving plants, and benefitting from the rich 
humus provided.

Antagonistic
        May need to be protected from slugs and snails.
Leaf gall and rust can occur.


So far there about 30 plants listed.

The attached file is an example of the treatment of a particular plant.


Rich

Gaia College

Plant Database   Plants   

Cedrus deodara  close all  open all

Nomenclature  close

Botanical Name  close  help

Cedrus deodara

Common Name  close  help

Himalayan cedar Deodar cedar

Botanical Family  close  help

Pinaceae

Description  close

Type  close  help

Coniferous evergreen tree

Size  close  help

In Victoria, B.C. will reach a height of 60' - 80' (20m),with a spread as wide as 30'- 35' (10m). This tree needs a lot of horizontal space, especially when young.

Rate of Growth  close  help
Form  close  help

Juvenile form: strongly pyramidal with a strong central leader Mature form: loose, tiered, upright oval

More pictures of plant form

Trunk or Stem  close  help

Trunk is Strongly tapered if tree retains its lower branches Bark is dark brown, nearly black in young trees Juvenile bark is smooth Mature bark is fissured Picture of bark

Buds  help
Foliage  close  help

Bright green year round Dense clusters of 5cm (2") long needles, sharp, pointed, arising from short, stout spurs that are spiralling around the branches, except near the tips of branches where they are borne individually.
Pictures of foliage (forward through next 3 pictures)

Flowers  close  help

Male cones: appearing summer to late fall, arising from the terminals of the spurs Abundant, bright, banada-shaped, 5cm (2"), pale green shedding pollen in the fall Picture of male cones Female cones: appearing late fall, arising from their own short spurs Upright, barrel shaped, 10cm (4"), bluish green, turning brown on maturity. Disintegrating after 2 years, leaving a persisten stalk. Pictures of females cones (forward through next 2 pictures)
Comparison of Cedrus cones:

  

        

          
Cedrus libani ssp. atlantica
          
Cedrus libani ssp. brevifolia
          
Cedrus libani
          
Cedrus libani ssp. stenocoma
          
Cedrus deodara
        
        

          

          

          

          

          

        
      

Fruit  close  help

Female cones disintegrate upon ripening http://oregonstate.edu/dept/ldplants/cede11.htm

Cultivars  close  help

'Albospica'  close

Tips of young shoots are creamy white. Particularly effective in late spring. Earliest know date of cultivation 1867

'Aurea'  close

Leaves are golden yellow in spring and summer, yellow green during winter

'Aurea Pendula'  close

Branches weeping, leaves yellow during late spring and summer, yellow-green during winter.

'Golden Horizon'  close

A Dutch raised selection of spreading habit with golden yellow foliage. Earliest know date of cultivation 1975.

'Karl Fuchs'  close

An extremely hardy form with good blue foliage. Earliest known date of cultivation 1979. Raised in Germany from seed collected by Karl Fuchs in Paktia province, Afghanistan.

'Pendula'  close

Also called 'Prostrata' A form with pendulous branches spreading over the ground, eventually growing too large for the rock garden. Earliest known date of cultivation 1866. Attractive as a wide-spreading low bush if controlled by pruning, but if permitted to develop unchecked it tends to produce a leader and lose it dwarf habit.

'Prostrata'  close

See 'Pendula' for information

'Pygmy'  close

Also called 'Pygmaea'. Very slow growing dwarf form growing about 1.5 cm per year. It makes a tiny hummock of blue-grey foliage and is best suited to the alipne garden. Earliest known date of cultivation 1943, of North American origin.

'Pygmaea'  close

See 'Pygmy' for information

'Robusta'  close

A wide spreading tree of medium height with irregular drooping branches and long, stout blue-green leaves up to 8cm long. Earliest know date of cultivation 1850.

'Verticillata Glauca'  close

A dense-growing small bushy tree with horizontal branches and almost whorled (verticillate) branchlets. Leaves glaucous green. Earliest known date of cultivation 1867.

Propagation  close  help
Native Habitat  close  help

Himalayan mountains of Northern India, at elevations of 1000 - 3000 m (3,500 - 12000') above sea level.
Native climate range: temperate

Tolerance to Cultural Conditons  close

Soil  close  help

This tree prefers fertile loam soil, but is highly tolerant of a wide range of soil conditions, including clay and sand as long at it has optimal soil fertility. Preferred ph: 7-8

Water  close  help

Low tolerance to flooding High tolerance to summer drought in hot locations

Light  close  help
Temperature  close  help

Tolerant of both hot and cool summer climates Cold tolerance to -17 degrees celsius (0 F), USDA hardiness zone 7

Other  close  help

Moderate tolerance to wind Moderate tolerance to snow Poor tolerance to seaside conditions Poor tolerance to salt.

Relationships  close

Synergistic  close  help
Antagonistic  close  help

Microbes:
Tip blight caused by:
Diplodia pinea, also known as Sphaeropsis ellisii

Root rots caused by:
Armillaria mellea
Armillaria tabescens, also known as Clitocybe tabescens
Cylindrocladium spp. (primarily in nurseries, rare in nature)
Cylindrocladiella spp. (primarily in nurseries, rare in nature)
Heterobasidion annosum, also known as Fomes annosus
Pestalotiopsis funerea, also known as Pestalotia funerea
Phymatotrichum omnivorum, also known as Phymatotri chopsis omnivora

Insects:
Pinewood Nematode: Bursaphelenchus xylophilus, also known as B. lignicolus
Pine needle scale: Chionaspis pinifoliae
Bowlegged fir aphid: Cinara curvipes
http://www.ent3.orst.edu/kgphoto/KGCode_Detail.cfm?ID=1661
Redheaded pine sawfly: Neodiprion lecontei
http://www.forestpests.org/subject.html?sub=183
Longtailed mealybug: Pseudococcus longispinus
http://www.entocare.nl/nl/foto's/P_longispinus.htm
http://www.extento.hawaii.edu/kbase/crop/Type/p_longis.htm
Black scale: Saissetia oleae
http://www.inra.fr/Internet/Produits/HYPPZ/RAVAGEUR/6saiole.htm
http://www.landcareresearch.co.nz/research/biodiversity/invertebratesprog/softscales/fauna/oleae1.asp
Cottony cushion scale: Icerya purchasi
http://mamba.bio.uci.edu/~pjbryant/biodiv/hemipt/Cottony%20Cushion%20Scale.htm
Eastern pine weevil: Pissodes nemorensis
Latania scale: Hemiberlesia lataniae
http://woodypest.ifas.ufl.edu/scales.htm
Pales weevil: Hylobius pales
http://www.forestpests.org/subject.html?sub=265
Bagworm: Thyridopterix ephemeraeformis
http://www.forestryimages.org/browse/subimages.cfm?sub=14
http://www.agrobiologicals.com/glossary/G1485.htm

Valuable Attributes  close  help
References  close  help

http://www.cnr.vt.edu/dendro/dendrology/syllabus/cdeodar.htm Phillips, Roger, Trees of North America, Random House, N.Y., 1978 The Hillier Manual of Trees and Shrubs, Sixth Edition, Hillier Nurseries, 1991

Plant Database   Plants   

http://www.gaiacollege.ca/course_content/Wiki/PlantDataBase.php Copyright: Gaia College Inc. 2003	Feb 23, 2005, 12:31 pm,PST Last modified: Nov 28, 2004, 8:29 pm, PST