Ornamental Grasses
In recent years ornamental
grasses and other grass-like plants have grown in popularity
particularly as accents and borders in rock mulch style gardens.
Many are fast-growing, very drought tolerant and will even thrive with considerable neglect.
As a rule of thumb, they need fast-draining soil -- they are not bog
plants!
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In Fall, the seed-bearing
plumes of
fast growing Pampas grass (Cortaderia selloana) rise to 20 feet
high with little need for irrigation or fertilizer. By mid-winter, this perennial should be cut back to
18 inches tall. It will re-grow to the height shown in the
following summer. Given the right conditions -- usually
near a stream -- it will self-seed and spread invasively. |
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Deer grass (Mulhenbergia
rigens) looks like a smaller cousin of Pampas grass -- growing
to only about 4 feet tall. In Fall it puts out fine purple plumes.
While it can be evergreen in milder climates, it does best when
cut back to about 6 inches in January. Very drought
tolerant, but looks better with some supplemental water in summer.
For a photo of Deer grass used as
a "skirt" for a Japanese Privet hedge, click
here.
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Blue
Oat Grass (Helictotrichon
simpervirens) – looks like giant blue fescue grass, but
grows to
2 to 3
feet high and wide. Bright
blue leaves with tall stems of yellow flowers in the Spring.
Needs rich soil.
Common
Blue Fescue (Festuca glauca) - this
is not the fescue you plant for a lawn, but rather the short, clumping,
fine blue or silvery gray grass, often seen as an edging to borders.
The ‘Elijah Blue’ selection is relatively long lived and very
blue. To 1 foot high.
It is not necessary to cut it back in winter.
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Red
Fountain Grass (Pennisetum
setaceum) - has
reddish brown leaves and rose-colored plumes.
Dies down in winter and should be cut back to a few inches
high. Be sure to get
the red variety, the white fountain grass is invasive and has been
displacing native grasses.
For best appearance Fountain Grass should be planted in
dense clusters. |
Flax
(Phormium tenax and lots of
hybrids) - These New Zealand
natives can be 5 to 7 foot tall giants, but with the proliferation of
hybrids, smaller, more colorful plants are now available. You may have
to ask for some of the newer colors – and they are glorious.
For example, ‘Morticia’ has purple-black leaves;
‘Dazzler’ has scarlet leaves striped with maroon; ‘Tiny Tiger’
(only 1 foot tall at maturity) has variegated leaves that become tinged
with pink as the weather cools and ‘Tom Thumb’ gives you green,
wavy-edged leaves with a reddish border.
You will have to put most of these in large pots out of direct
sunlight.
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Japanese
Blood Grass (Imperata
cylindrical ‘Rubra’) - leaves emerge in spring with
brilliant red tips and a green base.
The red color intensifies as it grows to 1 or 2 feet tall.
Rarely blooms and should be cut back almost to the ground
in mid-winter. The photo, taken in early Spring, shows young
Japanese Blood grass. |
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Society
Garlic (Tulbaghia violacea)
– a member of the lily family, has very fine bluish-green leaves with
shoots of lavender flowers in Spring and summer.
On the right, it is shown in a pot filled with rich soil.
It retains its leaves all year round.
Other
members of the lily family, including daylilies (Hemerocallis)
are also excellent grass like plants for hot climates. |
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Life Retirement,
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