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As
the water margin on the side opposite the path will be most
easily seen, it is often advisable to provide stepping
stones or a simple form of log
bridge in order to enable a view of dwarf plants on the near
bank, which from their own side are hidden. In fact, water
gardens which can only be seen from one side are seldom
satisfactory, and interest can be multiplied indefinitely
when the pathway crosses and recrosses the stream, now
passing close by the water's edge, now running inland for
awhile.
The
advantage of a winding brook over one which flows perfectly
straight is obvious; moreover it enables certain features to
be strengthened, without in any way producing an appearance
of artificiality. For instance, the deepening of a bay will
provide a home for various plants which would be swept away
by anything approaching a rush of water.
In these and other ways we can prepare our stream, so that the
maximum effect will be obtained when the plants and aquatics
have become established.
Before
attempting to plant, the character of the existing
vegetation should be carefully studied. This will vary
greatly, as the stream winds sluggishly through rich water
meadows, or trickles among mossy boulders and fallen tree
stumps. In one case, the soil will probably be a rich
alluvial mud, favorable to the growth of the yellow Iris or
the rank growing Dropwort. In the other, we shall find a
variety of native ferns, of small creeping things among the
mosses, and bold isolated clumps of golden
Marigolds.
Whatever
additional planting is done, then, must be influenced by
the class of plants already existing. Choice Water Lilies,
so beautiful in garden tank or formal pond, would look
utterly out of place among the homely surroundings of the
meadow stream.
The
largest and boldest plants, such for instance as the Cow
Parsnip (Heracleum), should be reserved for
positions
where the ground juts into the water. Not only will their
handsome leaves show to best advantage, but so placed, they
will conceal the further water recesses and provide an air
of mystery as to what the next turn will reveal. An endeavor
should be made to introduce a few clumps of plants with
distinctive foliage. These may take the place of much of the
coarse grass and sedge which probably chokes the margin of
the stream.
The
Sweet Flag (Acorns Calamus), exhaling a delicate fragrance
from its leaves when bruised, the Great Water Plantain and
the common Bulrush (Typha) are quite suitable. Then there is
the Great Water Dock (Rumex Hydrolapathum), which in autumn
decks our stream side with its blood red banners.
Unexpectedly beautiful is the Flowering Rush (Butomus),
carrying its bold umbels of rose red flowers on tall stems.
Distinctive and worthy of a place, the Giant Horse-Tail
(E.telmateia) deserves to be established in localities where
it does not already exist.
Unless the margin already consists of a fair breadth of rich
soil, use the mud excavated from the bed of the stream as a top
dressing before planting. During the process of deepening pools
and enlarging bays, a large quantity will be removed, and in
such a roothold the large border plants will
thrive.
In
addition to the Purple Loosestrife (Lythrum), already
mentioned, we may plant the yellow variety (Lysimachia). A
well grown plant of the Common Butterbur (Petasites) would
look well springing from a position close to the water edge;
the dull pink flowers appear in spring before the leaves
unfold. It is on the latter that the value of the plant
depends; they are handsome objects, often a foot across, and
not unlike those of the rhubarb.
In
a simple water garden, such as we have in mind,
only
native plants would have a place. It is essentially a home
for the many and beautiful wildings which may be collected
from the sides of streams and ponds.
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