This story is about an amazing transformation from barren to beauty. When the owners moved into the house, the first thing they wanted to change was the front and back yards. It was barren, utterly unattractive. The main part of the front yard was this hard surface covered with sand. It had been used as a parking space for years. The backyard had the similar hard sandy surface as the path, with a big bush of catti plants in the middle. When it was windy, the sands from the surfaces would be blown up and hit everything around: people, dogs, kids. It could be messy. The owner wanted beautiful landscapes for their yards; meanwhile, they also wanted something that is environmentally friendly, that would not use a lot of water. To be “good” to the environment was important for them. They wanted to be efficient for all natural resources, keeping the footprint on environment as small as possible.
Addressing the challenges of building a garden
When one looked at the front yard, the challenges for building a garden was obvious. A big lot. Hard surface. No top soil. And, on a slope. For plants to grow well, at the minimum, they would need water and soil. How would these be addressed? Capture and reuse rain Water When one checked on the site, they would see two downspouts, one on each side of the house, come right down to the lot. They pointed to hard surface, which would just let the rainwater runoff. That is quite a waste. Rainwater is an excellent resource of water, which can be used to water plants. To capture and reuse rain water, one can use a rain barrel, or build a rain garden. As the the front yard is on a slope where rain water would flow down naturally, a rain garden built close to the bottom of the slope could capture the rain water and reuse it well.
When it doesn’t rain, plants still need water to establish and grow. For irrigation of a water efficient garden, drip irrigation is the way to go. It can point to the root area for each plant precisely, so water can get to where it is needed exactly, without mass runoff. Compared with a sprinkler system, drip can save water by 30-60%. Select hardy and drought tolerant plants As the soil under the surface is very hard from years of being used as a parking lot, it was not the best soil for many plants. Ideally, the soil could be improved with materials such as compost and organic matters over a longer period of time; however, the option was not available due to the time limit of the project. This made the selection of plants especially important. Many native and other plants are adapted to California’s soil system and can thrive in all kinds of soils. They can be hardy for tough environments, and need little water once established. They also have other benefits. A lot of them produce blossom that are good food for pollinators like bees, butterflies and birds, supporting a vibrant Eco system. Repurpose of the existing plants For the design of the back yard, it was decided that the bush of cactus plants would go; the space would be emptied for other uses. The catti plants thrived well in the micro system around the house, making them a a good bet for the soil conditions in the front yard. Instead of discarding them, the catti would be reused for front yard.
Building the garden
After the design of the garden was finished, the project entered installment. Installing a rain garden There are several parts to this. First, proper discharge of rain water from the down spout. Instead of letting the rainwater just go down to the ground and run off, the water would be drained into the garden. Ditches were dug, pipes were connected. Two channels were also dug from the end of the pipes to the rain garden. When it rains, rain water would be discharged out of the pipes, into the channel, then flow into the rain garden. Then an area was dug for the rain garden. The shape of the rain garden usually is round or curvy, to reduce the force of runoff and effect of erosion. After that, plants were put into the rain garden. There are some special requirements for such plants. Specifically, they should be able to stand both wet and dry conditions well. Better yet, they can add color and texture to the garden, making the garden look even more attractive. Lastly, the whole area of the channels and rain garden were filled with pebble stones. Once the stones were added, two “streams” and a “pond” came into life. When it rains, all the roof’s rain water would flow into the stream, out to the pond, seep through the pebbles, water the plants, then percolate deep down and recharge ground water, an act badly needed for our environment. In big cities where surfaces like concrete is prevalent, only 5% of rain water can infiltrate deep into the soil, depriving groundwater the opportunity of being recharged. Areas like rain garden can change that and let as much as 25% of rain water go deep under. Recharging groundwater is very important for keeping a healthy water system and providing backup when drought hits. A lovely catti Area Catti plants are favorites for many people! They come in all kinds of shapes, colors and forms, some of them sporting splendid and beautiful flowers. They are very drought tolerant, needing only very little water once they are established. Catti plants can fill out a full garden, or can be integrated as part of a bigger garden, just like what was being done here. Here they fill out the long stripe along the driveway, offering something wonderful to see and enjoy when one comes home. A magnet for bees and birds Plants with splendid blossom provide the food that bees, birds and other pollinators depend on. As bees’ population has been on a decline, it is even more important that we provide places where these small creatures can feed on and take a good break. Compared with a lawn which does not provide any food or shelter, gardens with drought tolerant and native plants can become a paradise for bees and birds. Here, this plant was planted in a row along the pathway. When it blooms, it has this bright beautiful blossom that is hard to miss. It is not just us who love them, bees and birds crave them too! Parking Strip not to be ignored Compared with the main garden, quite often, parking strips are “after thoughts” since they are a bit small. However, in quite some cases they still have sizable spaces, and are an important part of the front space. They can also be filled with the drought tolerant plants and native plants, adding to the curb appeal, and food for bees and birds. Adding Mulch After the garden is finished, an important step is to cover the whole surface with mulch. There are several benefits of this. First, they can significantly slow down water evaporation, keep soil moist longer so reduce water required for the plants. They can also suppress the growth of weeds, further reducing water usage. Third, organic mulch like this made from bark can disintegrate into the soil over time, adding to the organic matters in the soil, improving soil quality and water retention capability. Aesthetically, they provide this backdrop for all the foliage and blossom, making the space look even more appealing. A brand new garden Tieing all the elements together…the new garden was born! The space has dramatically changed. Here was how it was like: And the new garden:
A rain garden doing well in rain
Shortly after the garden was finished, several storms hit the area. How did the garden do in the rain? All came out to be good! Water flew into the stream and pond as designed; plants enjoyed the rain and grew well. Off the garden, water that came down from impervious surfaces like driveway pooled into runoff, which would flow out to a sewer and empty into the streams and rivers. There were lots of pollutants in the runoff which would hurt the animals living in the waters, and pollute the broader water system. That is why we should limit the areas with impervious cover and try to build more rain gardens, like the one shown here. With a design of native and drought tolerant plants, the front space of this residence has been completely transformed. Not only has it gone from utterly unattractive to beautiful, but also become a wonderful place for bees, birds and butterflies. As the plants are drought tolerant, only a little water will be needed after the plants are established. Low water use, beautiful, great for the bees – water efficient gardens can add so much charm for your space!