allot to the " Trees of North America " field guide , seven mintage of spruce trees are native to Canada and the United States . The North American spruce develop in cool neighborhood such as the Rocky Mountains , Canada or in the northerly tier of United States Department of State in the United States . Nearly 40 types of spruce survive worldwide , all growing in the cool climate within the northern cerebral hemisphere , with 18 types in China alone . It is potential to discover the North American spruces by evaluating several look of the tree .

Step 1

Study the shape of the tree . The spruce tree diagram grow straight and improbable and the offshoot emerge from the trunk in a orbitual , or whorled , figure . Most spruce have a narrowed cone-shaped shape .

Step 2

Make a rough estimate on the height of the tree . Some spruces are simply too tall to estimate their height aright , but are so tall that you will have a good idea which species it may be . For example , the Sitka spruce can be more than 200 feet improbable — the tall of the spruces . Other spruces are more medium - sized specie , such as the 60- to 70 - substructure tall crimson spruces .

Step 3

Examine spruce needles carefully in regard to their color , flesh , length and sharpness . Looking at the needle of a white spruce , for instance , you would discover they are from half an inch to three - tail of an column inch long and prickly at the end . trim back one in half and you will notice they have a four - sided appearance in hybridization - section . The white spruce has green needles . Spruce acerate leaf rise one by one from the twigs , coming out of what take care like a pin on the branch .

Step 4

Observe the cones that prepare on spruce trees . snappy cones are much lighter than the distinctive cones you would find on a pine tree . The woody scales that compose them are fragile . The sinister spruce bring on a cone seldom longer than an inch and is quite unannealed to the pinch . The blue spruce has 3.5 - inch long cones on average , while those of a Brewer ’s spruce are as long as 5 inches and a combination of green and purple shade .

Step 5

count around where you find a spruce tree arise to help you identify the species . Only three spruce types maturate native to the easterly part of the northern United States — pitch-black , ruby and white spruce . The other four native mintage all exist in the Rockies or the Far West . Spruce tree habitat can let on its identify . study , for illustration , that the smutty spruce typically grow in soaked boggy ground , while reddened spruce fanfare in stony spate grime . Spruce trees often will grow together and take shape stand of a great number of trees , another clue you may use to recognize them .

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