Posted by Mark J. Platten, Teller County Extension Director for Colorado State University
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| Courtesy of Joy Reis |
Ground covers can add interest and texture to your
gardens and landscape while helping with erosion issues as well.
When choosing a ground cover you should consider the
length of the growing season, exposure and soil characteristics and cultural
needs of the plant. Always amend your soil for better results. Be sure to
choose plants that are hardy to USDA zones 2 to 4 for best results. Also
consider the size of the area to be covered, steepness of slope and pedestrian traffic
volume. Cultural factors to consider are soil texture and organic matter
content, moisture and drainage, light exposure and micro-climate for the area in
which you wish to plant.
To cover large areas look for plants that trail,
creep, form mats, or spread by runners or rhizomes. Aggressive plants can
spread into the landscape. For steep slopes, use species that produce dense,
fibrous roots to help prevent soil erosion. Not many ground covers will
tolerate repeated foot traffic except for grasses.
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| Courtesy of Joy Reis |
When purchasing your plants, select stock that
originates from areas similar to yours since these tend to be hardier. Look for
healthy plants that are not root bound or stressed in any way.
The best time to plant in our area is immediately
after the last frost, which can be middle to late June in the mountain
communities. Before planting, it is a good idea to acclimate your plants by
gradually exposing them to longer periods outside over the course of a few days
or weeks. This is known as “hardening” off. If the plants are grown outside at
local nurseries this will not be necessary.
Our mountain soils generally benefit from amending
with organic composts, sphagnum peat moss, composted horse or alpaca manures or
a combination of these. Beware that if the horse manure is not properly
composted, you may have weed seeds in the amendment. Another option to amending
our mountain soils is to create and plant on a berm or raised bed. These
options create drainage that is required by many garden plants.
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| Courtesy of Tami Sluder |
Most ground covers will require at least two years to establish.
Snow cover acts as an excellent mulch in the winter months. It allows the root
growth to occur during some periods of the winter. You can encourage snow to
drift over the root zone by placing a snow fence a few feet
upwind from the area.
Some ground covers to
consider for mountain regions:
Prickly Thrift Dead Nettle
Wooly Yarrow Penstemon varieties
Bugleweed Creeping Phlox
Lady’s Mantle Soapwort
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| Courtesy of Joy Reis |
Rockcress Stonecrop sedum
Mountain Sandwort Hens and chicks
Sea Thrift Lambs Ear
Basket of Gold Wild Germander
Snow in summer Thyme
Iceplant Speedwell
Pinks Wild Strawberry
Sweet Woodruff Creeping Baby’s Breath
Most of the plants listed are easy to
grow. One of my favorites is the Dragon’s Blood Sedum. It spreads very well and
has nice color and texture. Some are deer and rabbit resistant. Others are good
for borders or to line pathways. Get creative by mixing different textures,
colors and bloom times.
Information for this article is from Fact Sheet 7.413 http://extension.colostate.edu/topic-areas/yard-garden/ground-covers-and-rock-garden-plants-for-mountain-communities-7-413/
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