Noble fir is a large, evergreen tree that is native to the mountainous regions of the Pacific Northwest. It is one of the tallest and most massive tree species in North America. The scientific name for the noble fir is Abies procera. The tree has a straight trunk with reddish-brown bark that is covered with resin. The needles are blue-green in color and are arranged in pairs on the branchlets. The cones are ovoid in shape and are reddish-brown in color. The noble fir is an important source of timber for the lumber industry. It is also widely used as a Christmas tree.
About soil condition, noble fir prefers well-drained but moist, acidic soil. It is not particular as to soil type or pH. It is very tolerant of urban pollution and will even thrive in inner city environments. This tree is able to adapt to a wide range of soils, but it thrives best in sandy, loamy, or clay soils that are high in organic matter.
Just like other fir trees, the Noble Fir requires full sun in order to grow properly. However, it is also tolerant of partial sun, which means it can still do well even if it doesn't get full sun all day long. This makes it a great choice for areas that get some sun but not full sun, such as in dappled sunlight or in the shade for part of the day.
The temperature condition that is most ideal for the growth of noble fir trees is between 35 and 45 degrees Fahrenheit. This temperature range allows the tree to receive the necessary chilling hours required for proper growth, while also preventing it from being damaged by frost. However, noble fir trees can also tolerate temperatures as low as 20 degrees Fahrenheit, and as high as 60 degrees Fahrenheit.
Ideal humidity condition for this plant are around 40-50%. If the air is too dry, the plant will become stressed and may start to drop its needles. If the air is too humid, the plant may start to drop its needles and produce excess water on its leaves, which can lead to fungal problems.
For the fertilizer, this kind of plant food is very important for the growth of the noble fir. The root system is very important to hold the tree in the ground, and to help it to get the water and nutrients it needs to grow.
Pruning is an important part of keeping your Noble Fir healthy and looking its best. Pruning helps to remove diseased or damaged branches, promote new growth, and shape the tree. The best time to prune your Noble Fir is in late winter or early spring.
Propagation of the noble fir is best accomplished by seed. The seed should be collected in the fall and sown as soon as possible. Seedlings should be transplanted to their permanent location when they are 2-3 years old. The noble fir can also be propagated by rooting semi-ripe cuttings taken in the summer.
Usually, the plant growth rate studies have been conducted on young trees growing in plantations. In a study of 3-year-old noble fir trees, the average growth rate was 35.4 cm per year for trees that received nitrogen and phosphorus fertilizer, and 20.7 cm per year for trees that did not receive fertilizer. However, in a study of 6-year-old noble fir trees, the average growth rate was only 12.2 cm per year, regardless of whether or not the trees received fertilizer. This suggests that the growth rate of noble fir trees slows down significantly as they age.
Common problems for this kind of plant trees are needle cast, root rot, and drought. Needle cast is a disease that causes the needles to fall off the tree, and it can be caused by several different fungi. Root rot is a serious problem because it can kill the tree. Drought can also be a problem for these trees because they need a lot of water.
Source:
Noble and Greenough School - A 5-Day Boarding School
Abies procera Rehd. Noble Fir V - Andrews Forest
The Miridae (Hemiptera : Heteroptera) associated with noble fir,
