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Landscaping frames a house, just like a good painting, to bring out its good features and hide its rough edges. A house without landscaping looks like it does not belong.
Landscaping also adds value to a house. According to the International Society of Arboriculture, a landscaped house is worth five to twenty per cent more than an unlandscaped house. A nicely landscaped house also has curb appeal that will get a buyer to stop and look.
Landscaping greatly increases the livability of a house by creating outdoor living spaces. These can be as simple as a large lawn for play or as involved as living walls and a waterfall for private relaxation. Building retaining walls to level a steep slope makes the area much more usable.
Landscaping provides a great deal of personal satisfaction from bringing together all of the separate elements of a landscape to create a beautiful garden.
Many elements can be included in a landscape. There are landscape plants: trees, shrubs, lawns, groundcovers, perennials, annuals, fruits and vegetables. There are also hardscaping elements: walkways, patios, decks, walls and fences. There are features: fountains, pools, streams, rocks and statuary. Finally, there are utilities: irrigation and lighting.
Trees and large shrubs provide framing, screening and shade and define the areas of the yard. Smaller plants add variety in shape and color. Lawns provide play areas as well as visual open spaces. Hardscaping makes areas much more useful. Features add interest and create focal points. Irrigation simplifies maintenance and lighting adds interest and safety.
The most important part of the design process is to get a clear understanding of what is wanted from the landscape. Different people have different needs. Families with small children need a large lawn area where children can run and play. Older children may prefer a sports court. Some people want large areas for entertaining. Others prefer small, intimate areas. Some want to showcase their garden. Others prefer a private hideaway. Some need large storage areas for recreational vehicles. Some want large areas to grow fruits and vegetables. A major consideration is how much time is available to devote to maintaining the landscape. Flowers and lawns require a lot more attention than junipers and barkdust.
The two main considerations are to frame the house and to point people to the front door. Trees or large shrubs on either side of the house act like a picture frame to set off the house. A large rounded shrub at the corner of the house will soften the vertical line of a tall house. A lawn or flowers in front of the house can create a foreground to the picture. The shape of the lawn or the color of flowers can direct attention to the front door.
A very effective way to draw attention to the front door is to have the tallest shrubs at the corner of the house and the lowest shrubs next to the door. This is safer, too. One of my customers tore out the tall shrubs by her front door after someone hid there and robbed her as she opened the door. Trimming off the lower branches also keeps people from hiding behind shrubs.
Another consideration for the front yard is that it should look good all year. Normally this means using mostly evergreens or deciduous plants with interesting winter color. Plants with messy flowers or fruit should be avoided, especially next to the driveway and sidewalk.
The back yard is usually a place for play and relaxation. Often, a fence or a tall hedge to create privacy surrounds the back yard. A six foot fence provides plenty of privacy for single story houses, but tall shrubs or trees are needed for multi-story houses. A few plants can produce as much privacy as a hedge if they are strategically placed in front of the neighbors' windows. A completely different approach was used where my neighbors used to live. There were no fences so the back yards on the block were connected to create a large play area for the children.
Back yards are not used much in the winter so they do not have to look good all year. Summer blooming deciduous plants are a perfect choice for a back yard. Messy fruit trees and vegetable gardens are also better in the back yard.
Side yards are often used for storage and utility areas. They also provide access from the front to the back. Usually, landscaping should hide them without blocking access.
Side yards are usually narrow so tall and narrow plants are needed to soften a blank wall. Vines or espaliered plants can also be trained up a large blank wall. To break up the long straight lines, some of the plantings can be next to the house and others on the other side to create a curve. If there is a window, one option is to plant something opposite it so the planting is visible from the window. Another option is to plant something with sharp thorns under the window to discourage a burglar.
Choosing a style will make the elements of a landscape look like a connected whole, a single composition. The common styles of landscaping are formal, informal, natural, English and Japanese.
Formal style means that the left side of the yard is a mirror image of the right side. It usually includes tightly clipped hedges and, perhaps, geometric patterns. It works best if the house is also formal with the door in the center and matching windows on either side. It is easy to balance the yard because whatever is planted on the left is planted on the right.
Informal style is the most commonly used style since most houses built now are informal. The left and right sides of the yard are different but they still need to appear balanced. This is accomplished by planting roughly the same amount of greenery on either side of the front door.
Natural style attempts to make the house look like it was dropped in the middle of an undisturbed piece of land. Native plants are planted in irregular patterns along a winding path. Pruning is kept to a minimum. However, well-behaved plants should be selected so it does not end up looking like a weed patch. Natural style can be a very low maintenance landscape if you do not count the time it takes to convince people that the yard is supposed to look that way. See my webpage of Oregon Native Landscape Plants.
Large lawn areas surrounded by flowerbeds mark the English style. It takes a large yard to make it look good. There is also the English Cottage Garden style, which has no lawn but attempts to cram as many perennials into the yard as possible.
Japanese style includes rocks and irregular shaped trees and shrubs in intricate arrangements. Great expertise is required to design a traditional Japanese garden but a reasonably good Japanese garden can be designed with some study. Japanese style can also be a very low maintenance but the pruning requires some expertise. Kurisu International of Portland is one of the few landscape companies in the country that can design and install an authentic Japanese landscape.
Different styles can be used in the different parts of the yard. Keeping the natural style in the backyard saves explaining that it is supposed to look that way.
If the landscape will be viewed primarily from one point, such as a window or deck, this is a fixed viewpoint. The landscape is designed so everything is visible from that point. Tall plants are placed in the back and sides. Small plants are placed front and center.
If the landscape will be viewed from different places such as when someone walks up the front sidewalk or around the back yard, this is a moving viewpoint. Some things are hidden behind others until the viewer approaches closer. A moving viewpoint makes for a more interesting landscape. A curving sidewalk or lawn edge that goes around a corner out of sight will arouse the viewer's curiosity and draw them into the landscape. When a viewer makes the effort to investigate, they should be rewarded with an attractive plant or feature.
Position hardscaping and features
Walks, decks, patios, pools and retaining walls should be positioned first. Building codes may affect how and where they can be built. For example, retaining walls over four feet tall have to be fully engineered. Pools deeper than a certain depth may need to be fully fenced. A GFI outlet will need to be installed next to a water feature since extension cords are not allowed for pumps and lighting. Also, pool maintenance is greatly reduced if leaves and needles do not drop into it.
Position landscape plants
The first step is to decide what areas will be lawn and what areas will be planting beds. Planting beds next to the house should be at least three feet wide. After that, it is best to position the largest plants first and work down to the smallest.
Trees provide shade, flowers and privacy. A large tree on the southwest side of a house can significantly reduce summer temperatures and also air conditioning costs. A deck or patio will seem much more cozy if there is a tree canopy over it. Shrubs provide screening, and a variety of leaves, colors, flowers and even fruit. Annuals and perennials also provide a variety of leaves, colors and flowers. Perennials can bloom in the winter and spring and do not need to be planted each year. Annuals can provide a mass of color from late spring until late fall. Annuals can also be used to fill in the spaces between perennials and shrubs until they reach mature size.
Many people make the mistake of picking a plant then trying to find a place to stick it when it really does not fit anywhere. It is better to decide what size and shape of plants are needed to create a pleasing design and then choose plants that are appropriate.
Three questions should be asked of every plant:
How tall and wide can it get?
How much sun will it get?
What soil pH and moisture does it need?
The Calendar of Color section of this website gives the average landscape size of many trees, shrubs, vines and perennials. It also gives information on sun and moisture requirements. A partial list of plants that need acid or neutral soil can be found in the webpage Improving Soil under Soil pH or Acidity.
The question of "How tall and wide can it get?" is not the same as "How much room to allow for it?" I once designed a landscape so every plant had enough room to grow to mature size. The landscape looked really sparse and empty. Most landsapes are designed so it will look full in ten years. The ten year size of most trees ia about one-third to one-half of mature size. The ten year size of most shrubs is about one-half to three-fourths of mature size. Most perennials reach mature size in ten years. Since people move more often that they used to, many landscape designers space plants so it will look full in five years.
Since plants will eventually become too crowded to remain attractive or healthy, there are three options. One is to prune the trees and shrubs to keep them from becoming too crowded. Another is to fill in the spaces with annuals until the shrubs and perennials fill in. The third option is to plan on removing some of the plants as they get too crowded. Also, there is less and less sun as the trees grow and mature so it makes sense to include sun loving plants in the plan that will be removed as the landscape matures.
The plants on either side of the landscape should be balanced, that is roughly an equal amount of greenery on either side of the viewpoint. A formal design is always balanced because the plants are mirrored. An informal design is balanced by using different plants to produce about the same amount of greenery.
Use tall plants to frame a view. Low plants underneath and a tree overhead can complete the frame. An important part of enhancing a view is hiding ugly or distracting things.
Put small plants and fine textured leaves in front and center. Put tall plants and coarse textured leaves in back and on the sides. This allows all of the plants to be visible and it makes the leaf textures appear to be more uniform.
Bright colors appear to be closer. Darker colors appear to be farther away. Choosing bright or dark colors can make a yard look bigger or smaller.
Disappearing lines make a yard appear to be deeper. If the edge of the lawn disappears behind shrubs then reappears, it makes it harder to judge distances.
Make bold curves. A wiggle will look like it was supposed to be a straight line but it was not done quite right.
Turn long narrow areas into curves by a putting a group of plants on one side then the other. This is especially useful in side yards.
Plant single plants or groups of threes or five plants. Odd numbers of plants look better. Also, planting in triangles is more interesting than in straight rows.
Vary the height and shape of plants. Several plants will create a pattern that can be repeated a few times to create rhythm. This makes the landscape look like it works together to form one composition. But a high, low, high, low, high, low pattern or any pattern that is repeated more than a few times quickly becomes monotonous. If there is a large area to cover then more plants should be used in each section of the pattern.
Flower color should be carefully considered. Reds and oranges are exciting. Pinks and blues are soothing. A garden of all red and orange flowers is not relaxing. I prefer to use plants with different shades of blue to hold the composition together. Then I insert a splash of red or orange color to add interest. White flowers show up better in the evening than other colors.
Flowering season should also be carefully considered. One approach is to have everything in a bed flowering at the same time. Another approach is to have something in bloom in every bed every season. One big advantage to living in the Pacific Northwest is that it is possible to have something in bloom every month of the year. The Calendar of Color section lists trees, shrubs, perennials and vines according to blooming season and height so appropriate plants can be selected.
Occasionally break the rules to create a focus point. For example, placing a large leafed plant in front and center or planting a variegated leafed plant in the middle of all green plants draws attention to that plant. But breaking the rules more than a few times will make the composition fall apart into a hodge-podge of plants.
Common and Scientific Names of Trees, Shrubs, Vines & Perennials
Perennials by Flower Season and Height
Perennials in Alphabetical Order
Shrubs by Flower Season and Height
Shrubs in Alphabetical Order
Tree Color by Season and Height
Trees in Alphabetical Order
Vine Color by Season and Height
Vines in Alphabetical Order
Annuals, Biennials, Perennials and Bulbs
Fruit Tree Tips
Herbs for the Kitchen and Landscape
Oregon Invasive Plants
Oregon Native Landscape Plants
Planting a Vegetable Garden
Planting in Clay Soil
Preferred Soil pH
Pruning for Shade, Flowers and Fruit
Remove Trees Roots and All
Rod's Garden Pruning
Seasonal Pruning Guide
Trees and Shrubs in the Landscape
Water Wise Gardening
Wildlife Landscape Plants
Winter Plant Protection
Where Do We Go When We Die?
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