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Fast Growing Trees
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Hybrid Poplar


Hybrid Poplar
Weeping Willow
Silver Maple
Theves / Lombardy Poplar


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Douglas Fir
Canadian Hemlock
Dawn Redwood


Black Walnut

Colorado Blue Spruce
Scotch or Scots Pine

Fast Growing Hedging Plants
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Hybrid Poplar
Siberian Elm

Canadian Hemlock
- tall one of the fastest

- not so quick or so tall, more elegant

Douglas Fir
- good for wind break or background


USA Hardiness Zones

United States Department of Agriculture (USDA) provides the following information:

By State: AK  AL  AR  AZ  CA  CO  CT  DC  DE  FL  GA  HI  IA  ID  IL  IN  KS  KY LA  MA  MD  ME  MI  MN  MO  MS  MT  NC  ND  NE  NH  NJ  NM  NV  NY OH  OK  OR  PA  RI  SC  SD  TN  TX  UT  VA  VT  WA  WI  WV  WY

US hardiness zones

Because the USA is so large and covers so many different climatic regions, a zone system of plant hardiness has been devised to make it easier to decide if a plant will grow in your particular plot. The zones are based mainly on the average annual minimum temperature that is found in a region as that will determine the long term survival of a plant.

When you see pants for sale, they will be marked with "Zones 4-8" or whatever, this shows that the plant should be hardy if planted in those zones.

Note that the zone in a particular area can be affected by microclimate and also elevation. If you are in zone 5 for instance and live fairly high up a hill, facing largely north with wide open spaces around you, your effective zone could be 4 . Likewise if you live in a sheltered valley, facing south and surrounded by forest or even rock faces, your zone could be 6. It is even possible for the microclimate in different parts of your garden to have different zones depending on aspect, exposure and shelter.

This all means that the zones recommended for a plant are only a guide. If you're in In zone 5 for instance and a plant is recommended for 3-7, then all should be fine, but looking at a zones 5-9 or 1-5 plant and local conditions start to become more relevant. There are no real hard and fast rules in gardening, just guides....

Canadian Gardeners: Agriculture Canada have a detailed interactive easy to use map, together with a range of Canadian specific information.

English Version   French Version

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