Your landscape needs a lot less water in September than it did in the summertime. About 35 percent less on average. The days may still be warm, but shorter days and cooler nights in the months of September, October and November means less evaporation, which means less irrigation is required. Adjust your irrigation controller following the Fall Season Watering Recommendations to save water and money this Fall.
Ramping down your landscape irrigation does not mean you
need to stop watering all together. If you have a lawn, cut back to two days
per week. Cut back to two to four days a month for trees. Fall is when trees,
shrubs and other perennial plants get busy growing their roots, and proper watering
supports this activity. After spending the summer putting energy into growing
leaves, flowers and fruit producing plants take advantage of the fall season by
anchoring their root system to the earth. It’s important to fortify root systems
during the Fall so they have a stronger trunk and stem during the winter
season.
Fall season is also a great time to put in new plants, for the
same reason – they spend their time growing their root system instead of leaves
and flowers. But new plants need more frequent watering to help them get established.
Keep in mind that new plants need at least a month to anchor in the ground before
the first freeze, so don’t plant too late in the season to avoid damage.
And remember it is not necessary to irrigate when it rains, or on days following a good rain event (or about a 1/2" of rain). Using nature as your source of water encourages a desert friendly landscape.
Want to know how much your landscape really needs? Call 505-289-3003 to schedule a free, efficient irrigation consultation with a Water Authority expert.
The Water Authority encourages efficient outdoor water use for beautiful landscapes. With some 40 percent of our drinking water going to landscaping, improving outdoor water use efficiency is now the main focus of the Water Authority’s conservation efforts. But irrigation efficiency doesn't mean you can't have a beautiful, desert friendly yard. Below is your three-step plan for a beautiful, desert friendly yard.
1. Service your irrigation system by checking for leaks and malfunctions.
Low-maintenance landscapes are great, but there’s no such thing as a “no-maintenance” irrigation system. A single broken sprinkler head flowing at 15 gallons per minute will waste 900 gallons in one hour of use. Service your system regularly, and check it often for leaks and malfunctions.
2. Set your turf irrigation timer to water by the numbers.
Adjust your irrigation timer according to the season. For turf, water by the numbers: One day per week in March, two days per week in April and May, three days per week in the summer, and ramp down in the Fall. For other landscapes, follow the Seasonal watering recommendations. Call today for a free irrigation consultation.
3. Select desert friendly plants that thrive in our dry climate.
There are literally hundreds of plant options to choose
from that will thrive in our desert climate. And there are rebates available for
replacing turf with a desert friendly landscape.
If you follow this three-step plan, you’re sure to have
landscape success.
One of the
great advantages of desert-adapted plants is the wealth of colorful flowers
they produce, a boon to gardeners and pollinators alike. Plants that bloom in
autumn offer pollen and nectar for insects and, if the seed heads are left to
ripen, a late season food source for birds.
After a long hot summer, some plants think the cool of fall means it’s spring again and burst into bloom with renewed vibrance. Salvia greggii is commonly called autumn sage because, even though it flowers brilliantly in spring and lightly all summer, fall brings on another strong show. Responding to the cooler, longer nights in autumn, Salvia’s late season color becomes even more intense. Autumn sage is a compact shrub that grows 2-feet tall and 3-feet wide, with small dark green leaves and spikes of flowers in red, rose pink, coral, purple or white. Hummingbirds and bees are frequent visitors. Autumn sage prefers well-drained soil and deep watering (24 to 30 inches) every week or two while blooming, monthly or less in winter.
Autumn sage, Salvia greggii
Many ornamental grasses are their showiest in autumn, too. There are several varieties of little bluestem Schizachryium scoparium with 12-inch wide clumps of narrow blue-green leaves and 24-inch tall slender stems bearing fuzzy seed heads. ‘Blaze’ little bluestem turns scarlet in fall and ‘The Blues’ turns a beautiful pink. Both keep their color into winter when they fade to a rich bronzy brown. The color is our reward for supplying the little extra water these grasses need.
Native grasses are also important larval food for butterflies and produce nutritious seeds for songbirds, bringing color on wings to the garden. Since the seed heads are a large part of the reason they are planted, ornamental grasses should be left uncut until early spring. Then, trim them a few inches from the ground so the new growth is not stymied by having to push through old stubble to reach sunlight.
Little bluestem Schizachryium scoparium
Perhaps the most spectacular late blooming perennial is the Maximilian sunflower Helianthus maximiliani. By early autumn, its flower stems are 5 to 7-feet tall. Established plants can spread 4 or more feet wide, shooting up dozens of flower stems. The top few feet of the stems are covered in 2-inch wide yellow sunflowers with yellow centers abuzz with bees. The show can last for several weeks in September or October, but after the flowers fade the plants become a bird buffet of seeds well into winter. Maximilian sunflowers grow best in soils that hold water well and produce the best show when watered to a depth of 2 feet weekly during the growing season, every two weeks in spring and fall and monthly or less in winter.
Maximilian sunflower, Helianthus maximiliani
Flowers aren’t the only source of fall color, either, but red leaves in fall are not the norm in New Mexico. Cottonwoods in the Bosque and aspens in the mountains are our autumn gold. Chinese pistache Pistacia chinensis has become one of the most dependable heat and drought tolerant shade trees and adds splashes of red fall foliage in the ABQ metro area. A great shade tree that is 20 to 30-feet tall at maturity with a canopy spread of 20-feet, Chinese pistache benefits from structural pruning while it is young to assure strong branching. Once well rooted, it should be watered at the edge of the branch canopy to a depth of 2 to 3 feet every few weeks during the growing season and monthly or less depending on winter moisture.
Chinese pistache, Pistacia chinensis
Author: Judith Phillips, owner of Design Oasis, landscape designer and garden writer with 30 years experience designing arid-adapted and native gardens in the high desert.
505Outside sat down with local landscape contractor Hunter Ten Broeck, owner of WaterWise Landscapes Incorporated, to chat about Water Harvesting in Albuquerque.
There are two categories of water harvesting techniques: passive water harvesting and active water harvesting. Passive water harvesting is the practice of slowing water down and encouraging it to soak into the ground. Water is collected from the source (roof, canale, downspout, or sloped earth) and directed to the landscape where the water can be immediately used by the plants. Active water harvesting uses rain barrels, cisterns, and other types of containers to store rainwater for later distribution. These typically hold as few as 200 gallons of water up to 10,000 gallons. A good calculation to remember is 1” of rain on a 1000 sq. ft. roof equals about 600 gallons of water.
Hunter
says the key to any type of water harvesting system, whether active or passive,
is to incorporate it into the landscape design. Thinking through how the rain
water will interact with your landscape and designing for that should be first
and foremost.
When asked what a homeowner could easily do to start water harvesting in their yard, Hunter recommended starting small and trying passive water harvesting. Passive systems can be as simple as a swale, a French drain (or rock burrito, as nicknamed by his staff), or more complicated systems that include building an underground soil sponge area. He says to start by finding the roof’s downspouts and canals, then provide a catch area underneath them. A catch area could be a concrete splash block or cobbles. Then direct that water away from the home via a cobble swale that runs into a planting area. This can be done easily by digging down a few inches and creating a slope away from the house into the planting area. Once the swale is dug, add cobble on top to stabilize the soil and prevent erosion.
Cobble swale located at downspout next to house.
To make Hunter’s “rock burrito” simply dig an 8” wide trench at least 12” deep and as long as necessary for the space. Slope the bottom of the trench toward the drainage area. Layer the trench with filter fabric followed by cobble or rocks. Roll the fabric over the rocks then backfill with soil. This will provide an underground collection area for water. Water will slowly soak into the ground providing moisture to adjacent planting areas.
"Rock Burrito" French drain under construction in an Albuquerque landscape.
For homeowners who are ready to tackle an active water harvesting system like a rain barrel or cistern, Hunter recommends adding a passive water harvesting system next to the active one for when the container overflows.
Passive water harvesting swale next to active water harvesting cistern.
Using every drop of water through water harvesting is an important feature Hunter incorporates into all his landscape designs.
Local Expert: Hunter Ten Broeck, Landscape Contractor and owner of WaterWise Landscapes Incorporated in Albuquerque, NM. Author: Jill Brown, ASLA Landscape Architect and owner of My Landscape Coach in Albuquerque, NM.
Everything in nature is
connected. Fostering the connections keeps ecosystems and gardens vital. And weaving
pollinator essentials together into a beautiful garden is a fun process. Start
by thinking about where you will view the garden from as well as how you’ll
move through the space to view pollinator activity without disrupting your
winged guests. Organize the largest and thirstiest plants around rainwater
harvesting opportunities such as gutters or canales, and use pathways to divide
larger spaces into smaller planting areas like herb gardens, wildflower beds
and native shrub borders. Include the essentials of food, shelter and water in
your garden and your pollinators will thrive.
Among the insects and
birds that pollinate plants, bees are the primary work force. There are 1000+ kinds
of native bees in New Mexico, as well as honey bees that assist plants in
producing seeds. Butterflies and moths are less efficient pollinators than
bees, and many have key relationships with specific plants: Monarchs
butterflies with milkweeds and hawkmoths with evening primroses. Beetles, bats
and hummingbirds are also nectar drinkers and pollinators.
Plants expend energy to
produce showy flowers to attract pollinators. In exchange for distributing the
pollen needed to fertilize the flowers so the plants can reproduce, the
pollinator feeds on the energy-rich nectar. The shapes and colors of flowers
determine who will pollinate them. Butterflies can’t hover to feed, so they
need open-faced flowers with places to land, like daisies and roses.
Hummingbirds and hawkmoths are able to hover while they probe tubular flowers
for their nectar and pollen. Plants with inconspicuous flowers are often
wind-pollinated, like native grasses, but are still part of the pollinator
support system. Their leaves feed many larval stage insects.
If you are new to the
neighborhood, survey plants nearby for pollinator activity and plant some of
the busiest ones. If you already have plants in your garden that are abuzz with
pollinators, think about replacing any plants that are shirking their habitat
role with ones that are better hosts. Choose plants that are rich in nectar and
well-adapted and watch your garden become a surprise party buzzing with energy.
Food sources include flower nectar for sugar and essential amino
acids, pollen for protein, and leaves as larval food. Native grasses are
especially valuable as caterpillar food. Plan to include food sources
throughout the seasons that pollinators are active.
Shelter includes layers of canopy from taller
trees, mid-height shrubs and groundcovers (knee high and shorter). Leave some
dead snags as hummingbird roosts and for bee nesting. Leave leaf litter in some
places and keep some open soil in out of the way areas for ground nesting
insect habitat. Cluster plants in masses of varied heights and densities as cover.
Plans for bee hotels and ready-made bee and bat nesting boxes are easy to find and
build. Check nature center gift shops and online for ready-made nesting boxes.
A
small, trickling water feature as a
source of drinking and bathing water for insects and birds should have shallow
edges to avoid drowning bees. An extra drip emitter in fine stone mulch or bare
ground is a good water source for bees and puddling place for butterflies.
Eliminate
pesticides and herbicides. You don’t wan to attract pollinators just to poison
them! Your health will benefit, too.
The greater the variety of plants, the greater diversity of pollinators will visit. Plant for a seasonal progression of blooms. It takes at least 100 sq. ft. of the same flower to consistently attract pollinators (think a 5-foot-tall and wide fernbush or butterfly bush or a 10-foot x 10-foot wildflower or herb bed space). So if your neighbor has a swath of red valerian, plant a few but use more of your space for sunflowers, mistflower, yarrow, beebalm, salvias, penstemon, oregano, fennel, whorled butterfly weed or native buckwheats. Pollinators don’t recognize property lines so the more neighbors who garden for pollinators, the richer your neighborhood will become in pollinators. Avoid hybrid flowers, especially varieties with double flowers since those plants may produce little or no nectar or pollen.
Opuntia englemannii with bee. Photo by Judith Phillips
There are
public pollinator gardens in Albuquerque:
Rio Grande Botanic Gardens on Central Ave at New York NW
El Oso Grande Pollinator Habitat at the east end of El Oso Grande Park on Osuna Road @ Morris NE
Albuquerque Garden Clubs Garden Center in Los Altos Park on Lomas just west of Eubank
Author: Judith Phillips, owner of Design Oasis, landscape designer and garden writer with 30 years experience designing arid-adapted and native gardens in the high desert.
Testing the soil moisture with a long screwdriver.
Use a soil probe or a long screwdriver to test soil moisture. Push the screwdriver into the soil 24 hours after you’ve watered your plants. It will go easily into moist soil. Mark and measure how far it went into the ground. That will tell you how deep you have watered that plant. Every yard is different, but once you figure out how long it takes your watering system to water to certain depths, you’ll be set.
