Black walnut trees consist of 21 different species and include the black walnut, butternut, Arizona walnut, and two different species in the state of California. They prefer riparian zones around creeks, rivers, and dense woods and they do best in areas with a lot of sun. Black walnut trees often release chemicals in the soil that can kill other plants, which is why you often see dead or yellowing plants near the trees. These are deciduous trees that include large, hard-shelled nuts and leaves that are either toothed or serrated.
Their bark is usually dark in color and the nuts range from round to oval in shape, depending on the specific species. Cottonwood trees get their name because of seeds that are covered in a fluffy white covering. They like wet conditions because they are sturdy enough to withstand the elements.
The most common types of cottonwood trees are Eastern, black, and Fremont cottonwoods. Cottonwood trees normally have yellowish-green bark and leaves that are triangular in shape. Their flowers and fruits vary from one type to another but the mature trees always have deeply furrowed bark.
Elms are deciduous and semi-deciduous and include American, slippery, and rock elm trees. They have asymmetrical, toothed leaves and fruit that is either a winged key or a drupe, including plums , cherries, and almonds. American elms are perhaps the most popular type of shade tree in existence today. They are popular in part because of their vase shape and their elegant arching leaves. These trees can get up to feet in height and feet in width so they are quite large.
With nearly 20 different species and extra-large nuts, hickory trees can be found in the United States, Mexico, China, and Indochina. They include the shagbark, pecan, and pignut groups and they have tasty, nutritious nuts covered in a very hard shell.
Perfect for growing in zones , hickory trees have bark that is shaggy and gray in color. Their fruits drop in late summer and early fall and their leaves can get up to a healthy 8 to 14 inches in length. Some types of hickory trees can grow up to feet tall and 75 feet in width, making them a large, sprawling tree that is quite eye-catching. If you own a hardwood type of tree with pointed, sharp-spine leaves and red berries, you have a holly tree in your possession. Holly trees are a type of oak tree and include more than species, consisting of shrubs, climbers, and evergreen or deciduous trees.
Some types of holly trees grow up to 82 feet tall. They can grow well at sea level and up to around feet in elevation, making them a very versatile tree. They have glossy leaves and bright-red berries, making them the perfect accompaniment to Christmas decorations in the winter months.
Another hardwood type of tree is the magnolia tree, which consists of large, dark green leaves and beautiful white or off-white blooms that are very aromatic and eye-catching. The aroma is most noticeable in the early summer months. Even the twigs on the magnolia tree smell nice and its fruit consists of a cone-like aggregate shape. They are very common sights in the southeastern section of the United States. With roughly different species, maple trees are in a family of their own.
They include types such as the black, mountain, chalk, canyon, striped, and Rocky Mountain maple trees. Their deciduous leaves are found on stems that are opposite each other and their leafstalks are very long. Maple trees have small, showy flowers that form in clusters and fruit that develops in early spring. Oak trees consist of roughly 76 types in North America and species worldwide and are an especially hard type of wood. Thanks to their acorns, oak trees provide sustenance to wildlife of all types.
They can live for hundreds of years and get up to feet in height. The oak tree has flowers that fall in late spring and acorns that take 6 to 18 months to fully mature. Mostly found in the Northern Hemisphere, poplar trees consist of 35 natural species.
The most common types of poplars are quaking aspen, black cottonwood, Eastern cottonwood , and balsam poplars. This is a hardwood type that is quite large.
In the United States, the aspen is the most common type of poplar. Red alders are deciduous trees that are native to the western United States. These are terms that refer right back to the tree and how it reproduces itself. Trees, without exception reproduce by producing seeds, but the seeds of different trees vary and it is this that lies at the heart of the difference between a soft and a hardwood.
Trees that produce hardwood are known as angiosperms and produce seeds that are covered, either with a skin or a shell. Such seeds could be fruits or nuts. Softwoods on the other hand come from trees that are known as gymnosperms. The seeds of this type of tree have no covering althought they might fall to the ground in some form of protection eg. It is this that gives rise to their name, evergreens. This means that deciduous trees produce hardwoods and evergreens produce softwoods.
For example, balsa wood is one of the lightest, least dense woods there is, and it's considered a hardwood. The distinction between hardwood and softwood actually has to do with plant reproduction. All trees reproduce by producing seeds, but the seed structure varies. Hardwood trees are angiosperms , plants that produce seeds with some sort of covering. This might be a fruit, such as an apple, or a hard shell, such as an acorn. Softwoods, on the other hand, are gymnosperms.
These plants let seeds fall to the ground as is, with no covering. Pine trees, which grow seeds in hard cones, fall into this category. In conifers like pines, these seeds are released into the wind once they mature. This spreads the plant's seed over a wider area.
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