Sustainable Landscape Design Prepared for Master Gardener Training 2009 By Dr. Lois Berg Stack, Extension Specialist, Ornamental Horticulture Successful landscapes are: Functional … they solve problems. Attractive … they complement their surroundings. Alive … they change with needs and desires. Good landscapes are the result of good process. First define the space and determine the goals. Then install the elements that solve problems, create beauty and remain flexible enough to accommodate changes over time. Step one Assess what is good in the existing landscape, and what should be eliminated. Step two Define the environment, both above and below ground. Step three Think about what you want your landscape to do (“function before form”). Step four Make a list of the things you’d like to see in your landscape (ideas, objects, plants, etc.). Step five Develop a theme (or themes) for your landscape, to use as a filter when making decisions. Step six Design the structure and layout of the landscape (like the walls and floor plan of a house). Step seven Determine which functions might be served by hardscape items, and which ones by plants. Step eight Design for beauty and sustainability, applying these elements of art: Color Space Texture Pattern Line Light Form … and these principles of design: Balance/Style Dominance (Focal point) Rhythm/Repetition Transitions/Tension Proportion Scale Contrast Unity/Simplicity Color Color produces an emotional reaction. In the landscape it may be seasonal or year-round. Texture Texture describes surface quality. It is visual or physical, and can be fine to coarse. Line Line is one-dimensional, visual or physical. It provides structural framework, direction, control. Form Form describes the contour of 3-dimensional materials. Form is created when mass occupies space. Space Spaces are open areas or voids. Space can be “visually borrowed” from an adjacent landscape. Pattern Pattern is the relationship between solid objects and open space(s). Light Light is the illumination necessary for vision. It can be natural or artificial. Balance / Style Balance provides visual or physical stability. It can be symmetrical or asymmetrical. Style can be formal or informal. The design at the top is symmetrically balanced and formal. The design at the right is asymmetrically balanced and naturalistic. Dominance / Focal Point / Focalization Dominant elements contrast strongly with their surroundings, dominating subordinate elements. Focal points sometimes require the support of line. Scale and Proportion Scale is a measurement of size. Proportion is the ratio of an image or object to the frame of reference. We also use the term “scale” to describe our personal relationship to size of spaces. We’d be more comfortable in the “human-scale” space on the left than we in the very large-scale space below. Rhythm / Repetition Repeated colors, textures or other attributes provide a visual path through the landscape, and help us connect individual objects into a unity. Transition / Tension Transitions add intrigue and mystery. They offer a change of view and function, and allow many types and styles of gardens to be side-by-side without detracting from each other. Contrast Opposites and variety add interest, provide a balance between extremes, and create a diversity that prevents monotony. Unity / Simplicity Unity (“oneness”) and simplicity are created when all the design elements and principles are functioning. Step nine Consider labor and the financial costs of long-term maintenance. Step ten Develop a budget (both labor and money) for the entire project, and for subprojects. Step eleven When installing a landscape, complete as much of the hardscape (walks, walls, steps, fences, etc.) as possible before planting. Step twelve When selecting and planting plants: - Use your theme to filter your plant choices. - Choose plants by function and suitability to site. - Consider hardiness, size, color, texture, seasonality. - Develop effective, sustainable plant combinations. - Follow good planting and establishment practices. When selecting and planting plants: - Use your theme to filter your plant choices. - Choose plants by function and suitability to site. - Consider hardiness, size, color, texture, seasonality. - Develop effective, sustainable plant combinations. - Follow good planting and establishment practices. When selecting and planting plants: - Use your theme to filter your plant choices. - Choose plants by function and suitability to site. - Consider hardiness, size, color, texture, seasonality. - Develop effective, sustainable plant combinations. - Follow good planting and establishment practices. When selecting and planting plants: - Use your theme to filter your plant choices. - Choose plants by function and suitability to site. - Consider hardiness, size, color, texture, seasonality. - Develop effective, sustainable plant combinations. - Follow good planting and establishment practices. 3 4 4 Plant Hardiness Zones of Maine Average minimum winter temperatures: Zone 3 = -40 to -30 F 3 Zone 4 = -30 to -20 F 5 Zone 5 = -20 to -10 F When selecting and planting plants: - Use your theme to filter your plant choices. - Choose plants by function and suitability to site. - Consider hardiness, size, color, texture, seasonality. - Develop effective, sustainable plant combinations. - Follow good planting and establishment practices. When selecting and planting plants: - Use your theme to filter your plant choices. - Choose plants by function and suitability to site. - Consider hardiness, size, color, texture, seasonality. - Develop effective, sustainable plant combinations. - Follow good planting and establishment practices. Ten Tips for a Sustainable Landscape Ten Tips for a Sustainable Landscape 1. Check local regulations and resources Ten Tips for a Sustainable Landscape 2. Choose native plants to help Maine keep its natural look, and add non-invasive non-natives where appropriate The Benefits of Planting Native Plants Great variety from Maine’s nearly 1500 native plants. Beauty from plant form, texture, fragrance and color. Native plants are well adapted to Maine conditions. Native plants can provide screening, windbreaks, water protection, food and shelter for wildlife, and good visual interest in all seasons. Native plants are increasingly available at local garden centers and nurseries. Using native plants keeps Maine looking like Maine! Protect natural plant communities. Ten Tips for a Sustainable Landscape 3. Be cautious when bringing materials and plants from off-site; be even more cautious of plants that appear on their own. Avoid Invasive Plants Lythrum salicaria, “Purple loosestrife” (invasive plant) Ten Tips for a Sustainable Landscape 4. If your landscape is on the water, install a buffer planting. Buffer plantings protect the water A natural or planted area adjacent to the waterway. A community of trees, shrubs and other plants, forming layers of vegetation. A protective buffer between the waterway and activities like farming and construction. An esthetic addition to the landscape. An effective waterfront buffer can ... Improve soil quality Improve water quality Stabilize the banks of streams, rivers and lakes Decrease the damage caused by floods Help replenish groundwater supplies Muffle noises Improve wildlife habitat Increase property value Ten Tips for a Sustainable Landscape 5. Avoid open soil … plant groundcovers or apply mulch. Waldsteinia fragarioides, “Barren-strawberry” (native groundcover for shade) Native creeping juniper, lowbush blueberry and mosses in a developed landscape Ten Tips for a Sustainable Landscape 6. Reduce your garden’s carbon footprint. Ways to reduce your garden’s carbon footprint: Collect rain water in rain barrels for irrigation. Use porous paving/path materials. Make compost from kitchen waste for nutrient use. Avoid oil-based chemicals and fertilizers. Mow with a manual push mower. Buy locally produced plants and hard goods. Grow your own fruits/vegetables. Plant appropriate native and non-native plants. Plant “the right plant in the right place.” Ten Tips for a Sustainable Landscape 7. Use chemicals as a last resort: Avoid over-fertilizing in general. Learn Maine’s new phosphorus law. Use pesticides wisely. Ten Tips for a Sustainable Landscape 8. Develop your landscape over time: Don’t take on more than you can handle. Keep notes over time for reference. Learn from other good gardeners. Ten Tips for a Sustainable Landscape 9. Think long-term: Flexibility allows change as needed. Providing for lower maintenance will help you garden when older. Ten Tips for a Sustainable Landscape 10. Maintain an open mind: Global warming, water issues, environmental concerns, invasive plants, new pests … there’s so much to learn! Thank you!