Plant of the Month

Sunset Hyssop  

Agastache rupestris

Also known as licorice mint, this xeric perennial will add spectacular color and a pleasant fragrance to low water gardens. The tubular salmon-orange flowers with purple calyxes are what give this perennial it’s common name as it resembles the colors of a sunset. If you are a hummingbird lover, there is no better plant to lure them into your garden than Sunset Hyssop.

This plant prefers hot, sunny sites and requires very little water once established. It generally blooms from mid-summer to first frost. Avoid clay-heavy soils that tend to retain water. Cutting this plant back after initial blooms in mid-summer will promote additional blooms in the fall.

Plant of the Month

Low Grow Fescue

Festuca species

Low grow fescue is a great low-maintenance alternative to traditional bluegrass. This grass comes in a variety of mixes and has a soft, fine texture that is barefoot friendly. It thrives in full sun as well as shady areas where traditional turf struggles. Once established, this grass requires significantly less water than bluegrass. Low grow fescue can be mowed or can be left to its natural, wispy form to create a dramatic landscape feature.

Plant of The Month

Gold Variegated Iris
Iris pallida 'Variegata' Gold

With its green, gold and white variegated blade-like foliage, this iris will add color and interest throughout the growing season. Large, fragrant, soft blue-purple blooms in early summer. While this iris performs better in shade than other irises, it does best in full sun.  

Plant in large swathes for dramatic displays or as a colorful backdrop for lower growing perennials. Once, established, this iris has low water needs. 

Plant of the Month

Hummingbird Flower

Zauschneria garrettii

This colorful, low water groundcover is an amazing addition to any full sun garden. This plant produces a vivid display of bright orange-red trumpet shaped flowers in mid to late summer. True to it's name, this flower attracts hummingbirds and butterflies. Hummingbird flower looks great in rock gardens, sloped beds and cascading over rocks and walls. A bright and stunning attraction for any xeric garden.

Plant of the Month

Mock Bearberry Manzanita

Arctostaphylos x coloradensis

A terrific addition to any xeric garden or rock garden. This low growing spreader has shiny, oval evergreen leaves and pale pink blooms that emerge in spring followed by small red berries. Like other manzanitas, this variety has glossy, cinnamon red bark similar to a mahogany. A true Colorado broadleaf evergreen that will provide your garden with year-round interest. Once established, this plant needs very little water.

Plant of The Month

Plant of the Month

Hopflower Oregano

Origanum libanoticum

Superb ornamental herb with cascading habit and fragrant foliage.  Lavender bracts hang from slender stems in summer and early fall. The flowers are great for dried arrangements. Perfect perennial for containers, raised beds, or rock gardens. Oregano Hopflower is low water and thrives in full sun or light shade. It is tolerant of most soils but make sure it has good drainage.

Yellow Xeric Perennials

As our gardening season gets started maybe you’re considering reworking an area in your landscape to create more color. These days the nurseries are offering so many colorful and interesting perennials it’s hard to know where to start and which ones may be good choices for the Front Range. Here are a few of my favorite yellow blooming perennials, in no certain order. I’ve successfully included all of these in many landscapes and they have thrived in most instances. The one characteristic they all share, besides being yellow blooming, is that they all are low water plants that thrive in sunny conditions.

Prairie Cone Flower, Yellow; -  Ratibida columnifera. This is a long blooming perennial with an interesting shaped flower. The “cone” part of this flower is elongated; some people even describe the flower as a sombrero shape. The plant itself will grow to a size around 18” x 18”. This is a great choice for an area that wants to have a naturalized feel.

Columbine ‘Denver Gold’ - Auilegia ‘Denver Gold’. Denver gold is a 30” tall re-blooming columbine that can bloom into the summer. The blooms are a softer canary yellow. One challenge to be aware of is that this plant readily reseeds itself if seed heads are left to mature.  In general columbines reseed and cross breed easily and even though you start with yellow other shades and colors can spring up in your garden like this photo. Aquilegia species ‘Swallowtail’ and Aquilegia chrysantha are other yellow blooming columbines that are worth planting. I like planting columbines towards the rear of a perennial bed with thicker foliage plants in front of the bed.

Chocolate Flower  - Berlandiera lyrata. This is a long blooming small yellow flower that blooms from summer into fall. The flowers open during the day and in the morning release a fragrance that really reminds you of milk chocolate. The plants are a little wild and wiry looking, but the blooms are worth including, and they work well as small cut flowers.

Evening Primrose, Missouri – Oenothera macrocarpa.  A lower mounding plant with nice bright green foliage and waves of very large yellow blooms mixed in. This plant works well in larger plantings as well as a specimen. The soft yellow blooms are large enough to be visible at night; a great plant to include in a night time garden around an evening oriented patio.

These are just a few possibilities and many others are out there. Expect more lists of perennials with different colors in future posts. Maybe the orange and peach spectrum will be next.

Be in the garden and thrive.

Soil Bacterium Benefits

A while ago I read a great article that discussed the potential positive benefits that a specific soil bacterium possesses. A few days ago I unearthed the article on my desk and enjoyed reading it again. Below is a link to a similar story. If you have some time it is worth watching or reading. Perhaps it will get you excited about the upcoming gardening season.

Mycobacterium vaccae is a soil microbe that seems to possess several benefits for us mammals. It may help us generate serotonin, reduce our anxiety, and stimulate our ability to learn. Exposing yourself to soil and being outdoors is probably the simplest way to encounter this soil microbe. Imagine all these benefits in the soil, readily available right at our fingertips. At the very least this is a great excuse to get our hands “dirty” gardening.


What makes these findings so intriguing to me? They are just one more piece of reinforcing evidence that our connection to nature is vital to our well being. The stronger that connection is, the healthier and happier we can be. Sadly, as a culture we increasingly strain this connection. Taking the time to enjoy our natural outdoor environment is something we do not stress and make little time for in our daily routines. Kids may be the biggest losers in this increasing trend.

Encouraging and enabling our children to experience and play in the natural world is one of our most important responsibilities. Studies like the one I included here, reinforce why this is true. Gardening and outdoor fun are beneficial in ways we have ot identified or even imagined.

Take some time to walk a wooded trail or play in the earth with your child; you will feel better for having made the effort. Then consider making it a habit for the whole family; it really can be that simple.

Be in your garden and thrive.

Time to think about a xeric investment

Is the drought sneaking up on us? We need to pay much closer attention to this condition. It’s close to Spring and the snow pack across the state of Colorado is below average, in fact,our overall snow pack for last year was also below average. This means that we may not have the luxury of watering our landscapes whenever we want and as much as we want. Even now we can help the situation by conserving and using our water thoughtfully indoors; and it is not too early to consider the water we use in our landscapes.

Perhaps it is time to re-evaluate your landscape and lawn to see if it can be more water thrifty.  The adjective Xeric, is defined as of, characterized by, or adapted to an extremely dry habitat. Your landscape possesses many opportunities to be more xeric in nature and these changes can really be an investment with great returns. Like many other investments it can put time and money back into your pocket.

Here are several different ideas to help you reassess your landscape. 

When you turn your sprinkler system on in Spring, check to make sure it’s operating properly and that the appropriate times are set for each specific zones. Throughout the growing season you should adjust your sprinkler running times at least a few times to correspond to the weather patterns. Is each sprinkler head/nozzle adjusted correctly so that it is watering efficiently? Are you watering your lawn too frequently? Established bluegrass lawns only need to be watered once every three days and can be trained to require even less. An efficient sprinkler system can save a surprising volume of water.

How much turf is too much? Consider which family activities use your lawn; can all those activities take place on a smaller area of lawn than you have now? Perhaps you do not need as much lawn area as you have. Lawns on steep slopes are hard to properly water; the water tends to run off the surface before it soaks into the soil. What about terracing slopes with low walls or replacing the lawn with low water plants that are ideal for holding slopes and preventing erosion? Beyond these, many other strategies to help make your turf areas less thirsty exist. Saving water saves money.

Landscape shrub and flower beds should also be part of this assessment. Maybe it’s time to update all or parts of your landscape bed areas with xeric plantings that require less water and less maintenance. Many colorful and interesting low water shrubs and perennials have been introduced into the nursery industry; xeric minded gardens and bed areas can be designed to be vibrant, colorful and even beneficial in many ways. Xeric gardens are not about settling for less, but creating something interesting and thriving to heighten your senses while saving water, time and money.

Many more options for creating a more xeric landscape are out there, as well as different ways for your yard to be more sustainable. Remember, we can help with all of these ideas so please feel free to contact us with questions and your own landscaping challenges. 

Xeric means adapting to lower water conditions that seem to be inevitable for our region, but not a zeroscape or a yard full of rocks. After all, Zeroscape is the name of a Canadian band that blends different music genres together and not a term for the landscape.

Be in your garden and thrive.

Spring Thoughts and Ideas

Currently the temperature is in signal digits, but it’s not too early for spring thoughts, especially if you’re planning a new landscape or rejuvenating your gardens this spring. February is a great time to start talking with landscape architects and designers so that you’re ahead of the spring rush.



It’s also time to start gathering ideas and exploring information about possible materials and products for your new landscape project. I always head down to the Progreen Expo and check out the trade show for the latest landscape products and innovations. Every year I manage to find some new products, learn a few things, and find inspiration for a few ideas for the coming season. Even though this trade show is geared towards the green industry, lots of information is available and everyone can attend. The trade show does not have the fun indoor gardens and landscape contractor booths that the large garden show offers; but you might find the cool products and ideas that will show up in next year’s garden show. Of course you must be willing to negotiate around the large tractor and backhoe displays and through groups of roving landscapers to find that idea or treasure that is hidden in the corner display booth.


Is this a worthwhile endeavor for everyone, perhaps not? Go to http://www.progreenexpo.com/ for more information and to find a list of exhibitors to better judge whether this will be worth your time and the ten dollar entry fee. The trade show is at the Colorado Convention Center and starts Wednesday Feb. 9th and goes through Friday morning.

Watering in the winter months

Winter can be beautiful and offers us entirely different ways to experience our landscapes. Winter activities and opportunities are a big reason I stay in Colorado and why so many people end up relocating here. So, while you’re taking a break from skiing, boarding, or shoeing, remember that winter moisture is important to your landscape plantings, especially new landscape plantings.



Creek above St. Elmo



We’ve experienced a dry fall, and so far this winter has provided little precipitation along the Front Range; which means it’s time to provide some water to shrubs and trees. Why? Plants are indeed dormant during winter but still need to absorb moisture to offset their moisture losses. Along the Front Range our dry warm spells and windy days during winter months can dry out plants and soil. Winter burn or desiccation can be a real threat to the health of trees and woody shrubs. Simply put, desiccation is the drying out of a living organism; the organism loses moisture faster than it can be absorbed. Broad leaf evergreens like grape holly and boxwoods are more susceptible, and in my experience arborvitae and pines as well. Most trees and shrubs will benifit from additional moisture in the winter.

If around 2” precipitation has occurred in the last 30 days it is not necessary to water. Remember, two inches of snow does not equal two inches of precipitation, not even close. Instead of guessing about precipitation totals you can go to http://www.crh.noaa.gov/bou/?n=climo for Denver’s information and be sure.

November through March are the months to consider watering. Winter watering is most effective when temperatures are above 40 degrees F during the day and when the ground is not frozen solid. CSU Extension Service’s fact sheet number 7.211 is a great source for specific information about winter watering.

When there is a warm spell at my own garden, I turn the spigot on so that a slow trickle of water is flowing from the end of the hose and let it soak in next to a shrub or tree for 30 to 45 minutes, not very scientific but it is easy and successful. When watering larger trees, I’ll move the hose around to several locations underneath its canopy. Don’t forget to detach your hose from the spigot after finishing. You can always arrange for a tree service company to provide winter watering for your landscape and most will give you a set monthly price for this task.

The most important aspect of all this is to remember winter moisture is vital to newly planted trees and shrubs. Without it, these plants will not have a good chance to establish and thrive. Trees and shrubs can take several years to establish themselves and winter moisture levels should stay consistent through the first few years after planting.

Favorite grasses and how to make them shine



Miscanthus species



The winter Solstice is fast approaching, but I want to linger in summer and fall seasons to give you a few more favorite plants. What a great extended fall season we just experienced; the warm temperatures enabled the ornamental grasses to really show off their plumes in the sun which arched lower and lower in the horizon each day. The strange place I noticed this most is in the parking lot of my grocery store. The late afternoon sun behind all the plumes of the switch grass planted along the edge of the bioswales (search that term for an interesting side trip in sustainable landscapes and rain gardens) always made me pause and enjoy the view. I don’t think I made excuses to go shopping more often, but I did find myself anticipating this view as I turned

into the parking area.

Many of the taller ornamental grasses like Heavy Metal Switch Grass (Panicum virgatum ‘Heavy Metal’) and Maiden Grass (Miscanthus sinensis ‘Gracillimus’) have wonderful plumes and blades become much more intense when the sun can provide a backdrop in the early morning or late afternoon. If ornamental grasses are to capture this dramatic sun light in your landscape, place them in a location where the sun will be “in back” of the grasses from a frequented viewing spot like a well used patio or breakfast nook windows. The sun will always provide that great light to the grasses, but the trick is to make sure the grasses are planted in a location that provides you with a view of the show.

Another way to heighten the presence of ornamental grasses is to plant them next to shrubs and perennials that possess brilliant fall color; this kind of grouping starts to create a fall landscape full of textures and colors that rivals the flowers of summer. Ornamental grasses also provide interest to the winter garden by adding upright structure, color and texture. In summer, they provide a lush green texture that compliments many types of plantings.

The two grasses mentioned above are easy to find, grow well here and were two I particularly enjoyed this past summer and fall, but there are many diverse ornamental grasses to consider.



Hanock Coralberry


Now that we are heading into winter, it's time to gather up some summer garden memories to sustain us through the cold months. As I work through the winter creating planting designs here are two shrubs that were wonderful throughout the summer that I’ll keep in mind.

I always appreciate the simple form of Hanock Coralberry (Symphoricarpis x chenault ‘Hancock’) shrubs when they're grown in a little shade; their mounding arching habit of blue green round leaves cascading over the edge of a path or lawn has a soft inviting touch. This plant doesn’t have large colorful blooms or brilliant fall color, but it provides a peaceful sense of green similar to what a lush thicket of bright green bamboo might evoke. The blooms are inconspicuous to us but the buzz of honeybees is strong when they bloom in June and adds a quiet humming sound to the garden. This shrub grows low, only two or three feet in height but can spread out over 6 feet. Given space to grow, it requires little pruning. Even planted in full sun and grown under thrifty watering conditions, it is a successful plant offering a large mass of arching stems and leaves with a natural look. Plant it in masses as a large groundcover or as a foreground to larger shrubs.



Gro-Lo Sumac

Gro-Low Sumac (Rhus aromatic ‘Gro-Low’) which is a shorter variety of Fragrant Sumac is another shrub I use often and continue to enjoy. Beyond the intense red and orange fall color, this plant offers an interesting texture because of its three-lobed leaf shape and stem structure. The small catkins that persist on the stems also add to this effect. This is another shrub that requires little care and is drought tolerant. Many times I’ll design with these shrubs forming a mass to help create a natural feel in the landscape. As a gardener I never mind wading through a mass of this Sumac, because brushing the leaves releases a strong sharp earthy fragrance that is as pleasant in the moment as it is easy to recall in the dead of winter.

In a gardening world of large garish blooms that seem to become more so with each new variety introduced, sometimes it can be the simple plants that enliven my senses, catch my attention and provide a sense of place and peace.

Sustainable water features and fountains?

Can a water feature be sustainable? Well… perhaps a better question is can fountains and water features be designed and built with a nod towards sustainability. Definitely.


Here are few good ideas to make your water feature be a little more “green” in nature. Location and size matter; with the proper site placement, you have an opportunity to reduce the size of your water feature and that means less water volume. A good start is to make sure the water feature is close to your outdoor living spaces and not on the opposite end of your garden. The more integrated your feature is to your outdoor and interior living spaces the larger its impact will be. Experiencing the feature’s sensory offerings like sound and movement becomes easier at close range, and this enables you to have a smaller feature that needs less water volume. Reducing the amount of water means less water will be needed to replenish the recycling water in your feature. A water feature that uses less water is better for our environment.

Even though a water feature relies on water being recycled over and over again, it is not a closed cycle. Evaporation and water splashing outside of the feature result in a large net loss of water which needs replacing. Features with large surface areas of water like large pools lose more water to evaporation. A water feature that does not have a standing pool is subject to less evaporation and will require less water to be replenished. Consider a water feature design that incorporates a reservoir that is hidden making it less susceptible to evaporation. A thoughtful design can create a water feature that minimizes the amount of water that splashes out of the system’s collection area. Both of these design ideas can make a water feature more ecologically friendly by using less water.

By paying attention to the design, location, and size of a water feature you can reduce how much water the feature will need and less is better in this instance.

As your design takes shape, explore opportunities to use recycled material in the construction. Perhaps you can find tile that is left over from another project, maybe you find used bricks offered on Craig’s List, or you do a little clandestine dumpster diving and end up with a unique container or pot that can be incorporated. The only limit is your own daring and imagination.

Are water features and fountains really sustainable? This is a question you should answer for yourself. Water features can add amazing benefits to a landscape, and I believe the presence of a water feature creates a stronger connection to the natural world; a connection that really can improve your quality of life. You must balance the benefits and the environmental costs for yourself, but you can design and construct a great water feature that reduces its impact on our environment and natural resources.

Sustainable Landscape Symposium in March

The Front Range Sustainable Landscaping Coalition's third annual symposium will be at the Denver Botanic Gardens on March 4th. This year's topic is soil as the foundation of sustainable landscapes; an array of speakers including a panel of local experts will delve into topics like why soil is vital to our landscapes, what is healthy soil, how to build healthy soil and even how we as landscapers and gardeners manage to exhaust and degrade our soils. The day long symposium features David Montgomery the nationally known author of "Dirt: The Erosion of Civilizations". He will show us why soil conservation is vital to our very existence and what role soils played in the downfall of the greatest civilizations in history.


Do not miss such an informative day. More details and registration information can be found at http://www.botanicgardens.org/ or call 720-865-3580.