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  • From: Richard Morris <webmaster@pfaf.org>
  • To: PCPLANTDB <pcplantdb@lists.ibiblio.org>
  • Subject: [pcplantdb] Gaia College Website
  • Date: Wed, 23 Feb 2005 20:52:18 +0000

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




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