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Your Garden
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Water
Garden Construction
Water Garden Materials
Water garden construction can be done yourself or by landscape
contractors. Prefabricated water gardens are available in a wide
variety of shapes and sizes. Many are made of rigid fiberglass and are
very durable. Less expensive and less durable water gardens constructed
of bonded resin and semi-rigid or ABS plastic are also available.
Flexible PVC sheeting materials, 20-mil single-ply, 32-mil
double-ply,
or 30-mil double-ply are good choices for lined water gardens. The main
drawback of PVC is that it deteriorates when constantly exposed to
sunlight. However, well-filled water gardens should last a minimum of
ten years.
Water garden depths vary with size. A water garden should
not be less than 15 inches deep and a minimum of eighteen inches is
preferred. A water garden with 40- square feet of surface area should
be 18 to 24 inches deep. Water gardens with between 100 and 200 square
feet of surface area should be at least 24 inches deep.
Filling the Water Garden
Water gardens can be filled with tap water from the garden hose.
Chemical treatment of the water can harm plants and fish. Ordinary
chlorine won't harm plants, however, chlorine compounds may. Check with
your local water authority to find out the chlorine form used. If
ordinary chlorine was used, allow the water to stand for 24 to 48 hours
before introducing fish. Chlorine evaporates readily. If chloramines or
chlorine dioxide are used for water treatment, materials can be
purchased from fish and water gardening suppliers to counteract these
chemicals.
Water Garden Plants
When selecting plants for your water garden, consider the mix of
plants. No more than 70 percent of the water surface should be covered
with leaves of aquatic plants. Select miniature varieties to allow for
greater plant selection.
Flowers for water gardens include water lilies
and lotus. Bog plants such as arrowhead, cattail, horsetail, iris,
marsh marigold, sweet flag, and several others can be used. Submerged
plants, also called oxygenating plants, have their foliage under the
water's surface.
Floating plants have their root systems hanging into
the water with their leaves and blossoms on the surface. Shellflower,
water hyacinth, and water poppy are suggested plants. Many water plants
are winter hardy, but others will need to be removed from the water
garden before winter to ensure their survival.
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On
The Spot Garden Tip
tips
The very best time to plant most annuals is during the late afternoon.
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