How much space does a Douglas fir tree need?
Spacing–single row 14ft apart, Double row 16 ft between rows and plants, Multiple rows 20 ft or more between rows and plants. Due to its disease and soil/moisture problems the Douglas fir is a recommended windbreak tree only west of Iowa when proper soil conditions are observed.
What is special about Douglas fir trees?
The species is one of the best timber trees in North America, as well as a popular ornamental and Christmas tree, and it is used for reforestation along the Pacific coast. Its seeds are produced first at the age of about 25 years and in large crops every 5 to 7 years.
What is the difference between fir and Douglas fir?
The Douglas Fir is not considered a true fir because the cones hang down off the branch and fall off whole. The Douglas Fir’s one-inch long needles are also Flat, Friendly and Flexible.
How far do Douglas fir roots spread?
The depth of the root system is related to the soil structure and texture. In areas that receive abundant rainfall, the roots may burrow 60 to 100 cm into the earth, with some progressing even deeper. On well-drained soils, the lateral roots may reach up to 1 meter beyond the crown.
Is Douglas fir fast growing?
This tree grows at a medium rate, with height increases of 13–24″ per year.
Why is it called Douglas fir?
The widely accepted common name—Douglas-fir—commemorates David Douglas, the Scottish botanist who identified plants in Oregon in the nineteenth century.
How deep are Douglas fir roots?
The root system depth in Douglas fir is determined pri- marily by the soil structure and texture. On perme- able soils with favourable moisture conditions, the roots may reach down to 60–100 cm but they may penetrate even deeper (Hermann 2005).
Can you prune Douglas-fir?
The best time to prune a Douglas fir tree is during their dormant phase, which is early spring, before any new growth commences, or during their semi-dormant phase in mid-summer. Early spring is preferable as the new growth will quickly fill the gaps.
Can you shape fir trees?
The reason to trim these trees is for size control. Pruning method for Fir, Douglas fir and Spruce – These types are usually cut to control their height. You should prune them during their dormant state. Make a cut half an inch above the buds and it will become the new leader when the growing season begins.
What does Doug fir look like?
Douglas-fir needles are single (1) on the twig, tips are blunt or slightly rounded, flat and two- sided, same color on both sides, soft to the touch, needles are ¾ to 1 ¼ inches long, and very fragrant. Unlike subalpine fir needles, Douglas-fir needles narrow before joining the twig.
How tall can Douglas Fir grow?
Mature Size The Douglasfir grows to a height of 40–70′ and a spread of 12–20′ at maturity.
Do Douglas firs fall easily?
Douglas fir trees grow to be about 40 to over 70 feet tall, but the bigger they are, the harder they fall. If a Douglas fir in your yard is weakened from pests, old age, or damaged in a storm, it could fall and destroy your home, garage, or yard. For city-dwellers, Douglas fir trees are not your best bet.
What is the lifespan of a Douglas-fir?
The largest coast Douglas firs commonly live to be at least 500 years and sometimes exceed 1,000 years. Rocky Mountain Douglas firs have a shorter lifespan, usually living no more than 400 years. The population of these trees is stable.
How tall is a 30 year old Douglas fir tree?
Although early height growth of noble fir was less than that estimated for Douglas-fir, height growth of Douglas-fir begins to slow earlier than that of noble fir; in the years 28 to 30 after planting, height growth of noble fir was nearly the same as that estimated for Douglas-fir (6.8 feet for noble fir and 6.9 feet …
Is Douglas fir a good tree?
If you’re considering adding an evergreen to your yard, there are several benefits to choosing a Douglas fir. As an evergreen, it maintains its dark green, needle-like leaves all year long, and the visual appearance can help add value to your property. It also survives in different climates, not just cold locations.
How tall do Douglas fir trees grow?
What is the life expectancy of a Douglas fir tree?
How do I keep my fir tree small?
When should I cut my Douglas fir?
How fast does a Douglas fir tree grow?
What are facts about Douglas fir?
Facts and stats. Lifespan: 500 years. Height: The Douglas fir can grow to be very tall indeed, and can grow up to 60 metres in Britain. Leaves: It has soft needles with two grey bands underneath. Seeds: The oval shaped cones hang downwards with a three point bract – a special type of leaf – on every scale. Bark: Douglas fir’s bark is a reddish-brown, fissured and corky.
Is a Douglas fir A Christmas tree?
The Douglas fir is one of the most common Christmas tree types sold in the US. This evergreen is a staple in most Christmas tree lots, loved for its full pyramid-like shape and long-lasting needles. For the subtly sweet aroma alone, this evergreen is worth considering. How long does a Douglas fir Christmas tree last? Douglas Fir.
What is the growth rate of a Douglas fir?
In your yard, a Douglas fir will only grow 40 to 60 feet tall. Experts at Cal Poly estimate the growth rate of Douglas fir at 24 inches a year, but this also depends on its growing conditions. The Douglas fir is a cool-weather tree, and it only thrives in U.S. Department of Agriculture plant hardiness zones 5 through 6.