Yards in Austin, Tex., look like most across the country: sprawling expanses of short, uniform grass. But when intense Texas droughts set in, dead brown patches deface the Kelly green monochrome. Instead of repeatedly replanting these patches with the typical sod, the homeowner association of one Austin neighborhood, Travis Country, offers another option: filling in the brown spots with less-thirsty native species. As Cynthia Wilcox, the association’s grounds committee chair, puts it: “When your grass gets big dead spots, stop fighting it.” About 750 homeowners—half of the subdivision—have taken this advice. Roughly 500 of those homes have gone even further, landscaping much of their property with drought-tolerant native species such as long-bladed buffalo grass, slender salvia stalks and mountain laurel trees, which drip with purple blossoms that some people think smell like grape soda.
With homeowner associations often focused on projecting a uniform, ideal suburban image, it is rare for one to suggest—let alone allow—such a landscape shift. But precisely because these groups (usually called HOAs) establish and enforce aesthetic rules for millions of American yards, they could be a way to spread sustainable practices promoted by conservationists—while also helping subdivisions tackle problems ranging from unsightly lawn splotches to polluting fertilizer runoff. Some conservation programs are testing ways to overcome sociological and economic hurdles to get HOAs to embrace such changes, or at least not oppose them.
Residential lawns in the U.S. suck up a lot of water. EPA data show that, on average, 15 percent of residential water use involves lawns—which cover three times more land than crops irrigated for agriculture, according to NOAA and NASA research. Furthermore, grass fertilizer can run off into nearby streams, ponds or other water bodies, sometimes fueling algae blooms. And using homogenous flora such as commercial lawn grass species across many geographic zones dilutes local biodiversity; the practice has been linked to at least one native species decline, as introduced plants replace the native vegetation to which local wildlife has long adapted.
Conservationists have argued that some of these problems could be avoided if people made more diverse landscaping choices that support native species. In arid parts of the West, for example, landscaping a yard with local, drought-tolerant species and opting for mulch over grass can cut household water use by 30 percent. Native turfgrasses (which can replace typical lawn grass species) sprout fewer weeds and grow more slowly, reducing the need for mowing and its associated carbon emissions. Susannah Lerman, an ecologist at the University of Massachusetts Amherst, also found that lawns mowed less frequently supported more bees.
These changes can be hard sells for some residents, though, sometimes because they belong to homeowner associations with strict rules on yard appearance. HOAs are usually run by a handful of elected residents of a subdivision or neighborhood, but long-standing rules—such as grass being kept below a certain height—can come to be at odds with residents’ changing desires. In new subdivisions HOA rules may actually be established by developers, not the residents who ultimately move in. And sometimes, residents within an HOA are surprised by how strict landscaping rules are, or may disagree on yard upkeep standards. HOAs can fine people found in violation of rules, and conflicts over lawn care sometimes escalate to lawsuits. About 80 percent of new U.S. subdivision residents belong to an HOA, according to a July 2019 study in the Journal of Urban Economics.
“It is a little alarming for those of us who work in landscapes and sustainability to know that HOAs have a lot of influence and power over how a lot of our urban areas look,” says Gail Hansen, a professor of environmental horticulture at the University of Florida. But she and others are trying to turn that dynamic of enforced uniformity into an advantage by prodding HOAs to broaden their definition of what an acceptable yard looks like, in order to boost native-friendly landscaping across a community rather than rely on piecemeal efforts by environmentally minded homeowners. Sometimes that includes creating government programs, enacting state or local laws—or simply speaking with HOAs and residents themselves.
For over 30 years, a state government program has encouraged Florida residents to switch to sustainable landscapes with plants that are pest-resistant, drought-tolerant and thrive in most conditions, Hansen says. In northern Florida that could include the silvery pineapple guava shrub, while in the south an evergreen called natal plum can be kept trimmed low serve as groundcover. State law dictates that HOAs cannot prevent residents from planting these “Florida-Friendly” options. However, HOAs can still push back if homeowners choose plants or designs that do not meet neighborhood aesthetic standards. Hansen speaks with residents about how the initiative can work within HOA rules, and she also sometimes persuades board members to rewrite their mandates to accommodate the program. There are about 500 yards certified with the program, with still more properties practicing at least some of the recommended conservation measures. Last year a majority of the more than 220,000 attendees of water conservation workshops taught by University of Florida extension faculty reported scaling back their lawn watering afterwards.
Leslie Nemo, Scientific American | Read more:
With homeowner associations often focused on projecting a uniform, ideal suburban image, it is rare for one to suggest—let alone allow—such a landscape shift. But precisely because these groups (usually called HOAs) establish and enforce aesthetic rules for millions of American yards, they could be a way to spread sustainable practices promoted by conservationists—while also helping subdivisions tackle problems ranging from unsightly lawn splotches to polluting fertilizer runoff. Some conservation programs are testing ways to overcome sociological and economic hurdles to get HOAs to embrace such changes, or at least not oppose them.Residential lawns in the U.S. suck up a lot of water. EPA data show that, on average, 15 percent of residential water use involves lawns—which cover three times more land than crops irrigated for agriculture, according to NOAA and NASA research. Furthermore, grass fertilizer can run off into nearby streams, ponds or other water bodies, sometimes fueling algae blooms. And using homogenous flora such as commercial lawn grass species across many geographic zones dilutes local biodiversity; the practice has been linked to at least one native species decline, as introduced plants replace the native vegetation to which local wildlife has long adapted.
Conservationists have argued that some of these problems could be avoided if people made more diverse landscaping choices that support native species. In arid parts of the West, for example, landscaping a yard with local, drought-tolerant species and opting for mulch over grass can cut household water use by 30 percent. Native turfgrasses (which can replace typical lawn grass species) sprout fewer weeds and grow more slowly, reducing the need for mowing and its associated carbon emissions. Susannah Lerman, an ecologist at the University of Massachusetts Amherst, also found that lawns mowed less frequently supported more bees.
These changes can be hard sells for some residents, though, sometimes because they belong to homeowner associations with strict rules on yard appearance. HOAs are usually run by a handful of elected residents of a subdivision or neighborhood, but long-standing rules—such as grass being kept below a certain height—can come to be at odds with residents’ changing desires. In new subdivisions HOA rules may actually be established by developers, not the residents who ultimately move in. And sometimes, residents within an HOA are surprised by how strict landscaping rules are, or may disagree on yard upkeep standards. HOAs can fine people found in violation of rules, and conflicts over lawn care sometimes escalate to lawsuits. About 80 percent of new U.S. subdivision residents belong to an HOA, according to a July 2019 study in the Journal of Urban Economics.
“It is a little alarming for those of us who work in landscapes and sustainability to know that HOAs have a lot of influence and power over how a lot of our urban areas look,” says Gail Hansen, a professor of environmental horticulture at the University of Florida. But she and others are trying to turn that dynamic of enforced uniformity into an advantage by prodding HOAs to broaden their definition of what an acceptable yard looks like, in order to boost native-friendly landscaping across a community rather than rely on piecemeal efforts by environmentally minded homeowners. Sometimes that includes creating government programs, enacting state or local laws—or simply speaking with HOAs and residents themselves.
For over 30 years, a state government program has encouraged Florida residents to switch to sustainable landscapes with plants that are pest-resistant, drought-tolerant and thrive in most conditions, Hansen says. In northern Florida that could include the silvery pineapple guava shrub, while in the south an evergreen called natal plum can be kept trimmed low serve as groundcover. State law dictates that HOAs cannot prevent residents from planting these “Florida-Friendly” options. However, HOAs can still push back if homeowners choose plants or designs that do not meet neighborhood aesthetic standards. Hansen speaks with residents about how the initiative can work within HOA rules, and she also sometimes persuades board members to rewrite their mandates to accommodate the program. There are about 500 yards certified with the program, with still more properties practicing at least some of the recommended conservation measures. Last year a majority of the more than 220,000 attendees of water conservation workshops taught by University of Florida extension faculty reported scaling back their lawn watering afterwards.
Leslie Nemo, Scientific American | Read more:
Image: Getty
