What is a Water Garden and How to Build One

Water garden

Water gardens are captivating aquatic landscapes that can bring a touch of tranquility to any outdoor space. These enchanting features combine the serenity of water with the vibrancy of plant life, creating an ecosystem you can enjoy year-round.

Delve into the enchanting world of water gardens to answer, “What is a water garden?” and unlock how to build your very own aquatic oasis.

What is a water garden?

A water garden is a carefully designed aquatic landscape that incorporates various elements of water, such as ponds, fountains, or streams, along with aquatic plants and often fish or other wildlife. These living works of art mimic natural aquatic ecosystems, providing a blend of water, flora, and fauna. They are customizable and suitable for various spaces.

How to build a water garden

water garden
Nowis | Wikimedia Commons | CC BY-SA 3.0

Building a water garden is a rewarding and creative project that can transform your outdoor space into a tranquil oasis. A well-designed water garden can add natural beauty and a sense of serenity. Follow these steps to build your water garden:

Step 1: Select the location

Selecting the perfect location for your water garden is the essential first step. Start by observing sunlight patterns to ensure your chosen spot receives at least six to eight hours of full sun daily. Also, consider the benefits of some shade during the hottest hours.

Accessibility and visibility are also crucial factors. You will want to enjoy your water garden from various angles and access it easily for maintenance. Before digging, contact your utility company to identify and mark underground utilities, ensuring safety and preventing costly damages. Lastly, ensure the ground is level, free from tree roots, and clear of obstacles.

Step 2: Design your water garden

Designing your water garden is an imaginative process. Start by defining your vision, measuring your area in square feet, and considering the primary purpose of your water garden. Sketch your ideas on paper – outlining the shape, size, and placement of your water feature, as well as any additional elements like rocks, waterfalls, or fountains.

Take inspiration from nature and other water gardens, and be mindful of the surrounding landscape to ensure seamless integration. As you plan, think about how your water garden will complement the existing aesthetics of your outdoor space while providing a retreat for relaxation and enjoyment.

Step 3: Gather your materials

To bring your water garden to life, you will need a combination of structural components and creative elements. Common materials for building a water garden include:

  • Pond liner (flexible liner, fiberglass, or PVC)
  • Pond pump
  • Filtration system
  • Assorted rocks for edging and decoration
  • Aquatic plants
  • Fish (optional)
  • Decorative elements

Step 4: Build your water garden

Excavate your landscape and introduce elements to enhance the aesthetics of your water garden.

  • Excavation and liner installation: Begin by digging the hole for your water garden – create varying depths for different plants and aquatic life. Then, install your pond liner, ensuring it is free from wrinkles or folds.
  • Add filtration and pump system: Install a filtration system to maintain water quality and connect a pump to circulate and aerate water. Position the pump and filter in the deepest part of the pond.
  • Create a shelf for plants: Build a shelf or ledge around the edge of your pond where you can place potted aquatic plants at different depths. This adds to the visual appeal and contributes to water quality.
  • Position rocks and decor: Arrange rocks, stones, and decorative elements around your water garden. These not only enhance the aesthetics but also provide hiding spots for fish.
  • Fill your water garden: Fill your pond with water, preferably using a de-chlorinator to remove harmful chemicals from tap water. Gradually fill it to avoid damaging the liner.
  • Plant aquatic vegetation: Add a variety of aquatic plants like water lilies, lotus, and submerged oxygenators. These plants contribute to the ecosystem by providing oxygen, shade, and natural filtration.
  • Introduce fish (optional): If desired, introduce fish like koi or goldfish. Provide suitable fish food and ensure the water is adequately conditioned.
  • Add water features (optional): If you want to enhance the aesthetics of your water garden, consider adding features like waterfalls, fountains, bubbling rocks, or lighting according to your design plan.
  • Landscape around your water garden: Once your water garden is in place, landscape the area around it. This includes adding your chosen type of mulch, rocks, garden paths, or other decorative elements to complement the water feature.
  • Test and adjust: Before completing your water garden, test the pump and filtration system to ensure they are functioning correctly. Make any necessary adjustments to water flow and filtration.
  • Complete the edging: Finish the edges of your water garden with stones, bricks, or other materials to create a seamless transition between your garden and the surrounding area.
  • Final check and fill: Double-check the water level and adjust it if necessary. Ensure the water is clear and free from debris.

Types of water garden plants

Petrova Jones | Canva Pro | License

Selecting the right aquatic plants is a crucial aspect of creating a thriving and visually appealing water garden. Here are some categories of plants to consider for your water garden:

Aquatic marginal plants

These plants thrive in shallow waters and can be placed along the edges of your pond or in shallower areas. Examples include:

  • Cattails (Typha spp.)
  • Iris (Iris spp.)
  • Sweet flag (Acorus calamus)
  • Water lilies (Nymphaea spp.)

Submerged plants

These plants are essential for maintaining water quality as they absorb excess nutrients and release oxygen. Submersible plants include:

  • Anacharis (Elodea canadensis)
  • Hornwort (Ceratophyllum demersum)
  • Waterweed (Elodea densa)

Floating plants

pink water lilies on water
Pexels

Floating plants provide shade, reduce algae growth, and offer a natural aesthetic. They float freely on the surface of the water and include:

  • Duckweed (Lemna minor)
  • Water hyacinth (Eichhornia crassipes)
  • Water lettuce (Pistia stratiotes)

Bog plants

Bog plants prefer damp soil and can be planted around the perimeter of your pond or in containers partially submerged in water. Bog gardens typically include taller plant varieties that thrive with damp roots and dry crowns. They include:

  • Cardinal flower (Lobelia cardinalis)
  • Marsh marigold (Caltha palustris)
  • Pickerelweed (Pontederia cordata)

Deep-water plants

These plants thrive in the deeper areas of your pond and add vertical interest. Deep-water specimens include:

  • American pondweed (Potamogeton nodosus)
  • Eelgrass (Vallisneria spp.)
  • Lotus (Nelumbo spp.)
  • Water lilies (Nymphaea spp.)

Edible aquatic plants

Edible aquatic plants can add both beauty and functionality to your water garden. Here are some examples of edible aquatic plants to consider:

  • Arrowhead (Sagittaria spp.)
  • Chinese water spinach (Ipomoea aquatica)
  • Water chestnut (Eleocharis dulcis)
  • Watercress (Nasturtium officinale)
  • Water celery (Oenanthe javanica)
  • Water hyssop (Bacopa monnieri)

Pro tip: When selecting plants, consider the specific requirements of each species, including sunlight, water depth, and growth habits. Combining a variety of plant types can create a balanced and harmonious water garden that not only looks stunning but also contributes to water quality and supports aquatic life.

Caring for your water garden

Chitrapa | Wikimedia Commons | Public Domain

Once your water garden is in place, it requires ongoing care to ensure its beauty and vitality. Proper maintenance is essential to create a thriving aquatic ecosystem. Here are key steps to care for your water garden:

  • Check water quality regularly: Regularly monitor the quality of your pond’s water. Use a test kit to check parameters like pH, ammonia, and nitrate levels. Adjust as needed to maintain a healthy environment for aquatic life and plants.
  • Seasonal clean-up: Perform seasonal maintenance to remove debris, fallen leaves, plant decay, and excess organic matter. This prevents water contamination and algae growth. You can use a net or skimmer to keep the surface clear. Additionally, trim and prune aquatic plants as needed to maintain their size and shape.
  • Algae control: Keep an eye out for algae growth, especially in the warmer months. Algae can cloud the water and disrupt the balance of your water garden. Consider using algae-control products or introduce algae-eating fish like plecos or tadpoles.
  • Fish care: If you have fish in your water garden, provide proper care by feeding them appropriately and monitoring their health. Ensure the water has adequate aeration to support healthy fish respiration.
  • Filter maintenance: Regularly clean and maintain your filtration system. Replace filter media or cartridges as recommended by the manufacturer to ensure efficient water circulation and quality.
  • Winter preparations: In colder climates, prepare your water garden for winter. Move sensitive aquatic plants indoors or to deeper water, and consider using a pond heater or de-icer to maintain water temperature and prevent the pond from freezing completely.

FAQ about water gardens

What are some common issues in water gardens?

Common issues include algae overgrowth, water quality problems, and fish health issues. Address these issues by implementing proper maintenance routines, using water treatments if necessary, and ensuring the ecosystem is balanced.

How do I maintain water quality in my water garden?

To maintain water quality, regularly test the water parameters, clean the filtration system, remove debris, trim and prune plants, control algae growth, and ensure proper aeration and circulation.

Can I have a water garden in a small space or on a patio?

Yes, small water gardens are popular for patio areas. You can DIY create or have a professional install a container water garden, small pond, or tabletop fountain using watertight containers, flexible liners, and pump systems. Adapt the design to fit your available space and preferences.

What wildlife can I hope to find in my water garden?

Water sources attract a variety of wildlife, both terrestrial and aquatic, to your garden. Common animals, insects, and larvae that inhabit water gardens include:

  1. Birds such as robins, sparrows, finches, and hummingbirds
  2. Insects like bees, butterflies, and dragonflies
  3. Amphibians like frogs and toads
  4. Reptiles like turtles
  5. Beneficial invertebrates like snails and freshwater shrimp

Get professional assistance

If you are thinking of more than a small container and a few types of plants on top of the water, consider hiring a professional to help you design the water garden of your dreams. Let Lawn Love connect you with professional landscapers and gardeners who will let you sit back and enjoy a peaceful outdoor space while they prepare your new backyard water garden.

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Kimberly Magerl

Kimberly Magerl is a writer and data analyst specializing in landscaping, gardening, lawn care, and pest control. She enjoys growing orchids, tending to fruits and vegetables in her garden, and getting outdoors. A resident of Texas, when she isn't gardening, Kimberly enjoys trying new recipes and cooking with her home-grown herbs.