Generally called cosmos, these annual flowers grace a grassy but largely unlovely median of the township's unofficial Main Street. The plantings are concentrated in the congested four-lane stretch between Haddonfield Road in the Erlton section and I-295 at the eastern border of Barclay.
"It's a gateway to the Garden State, and the weeds were three feet high," Beach says. "It certainly did not look as welcoming as the wildflowers."
The seeds went into the ground in early June, during summer's searing heat. The floral display exploded after Hurricane Irene.
"I'm hearing a lot from the community about how much they love it," says Lori Braunstein, executive director of Sustainable Cherry Hill, a green-advocacy group that helped with the project.
The cosmos cut down on mowing costs and also pull pollutants out of the soil, notes Bart Mueller, executive director of the South Jersey Transportation Authority.
The authority pioneered this sort of high-volume highway beautification, sowing 47 miles of the Atlantic City Expressway with wildflowers several years ago.
A state agency, the authority advised the township about flower selection and helped with the planting. New Jersey Transportation Commissioner James Simpson and his department also assisted.
That's right: The Republican administration in Trenton worked hand in (gardening) glove with the Democratic administration in Cherry Hill - in the Democratic bastion of Camden County.
So Route 70's flowers are among the rarest of floral species. Call them Bipartisan agreement-us.
Jay Lassiter, a self-described progressive activist who lives in the township, declares the project a "fantastic" example that government can work.
"It was done in the spirit of Lady Bird Johnson, one of my personal heroines," he says.
In the mid-1960s, the wife of President (and towering Democrat) Lyndon B. Johnson attracted strong Republican support for planting wildflowers along highways nationwide.
Her legacy is particularly visible in her native Texas. "In 2004, I came back from a conference in San Antonio with two" takeaways," Mueller says. "All-electronic tolls, and wildflowers."
Platt's chief of staff, Dan Keashen, says the plantings require minimal maintenance - the outside edges must be trimmed - and have not created any visibility problems.
"It's an extremely successful public-policy initiative," he says. "I haven't run into anyone, of any political persuasion, who's against it."
Indeed, longtime Cherry Hill resident and prolific blogger Dan Cirucci, who occupies the opposite end of the political spectrum from Lassiter, is a big fan.
"Lady Bird Johnson would love these flowers," Cirucci says. "But so would Nancy Reagan and Laura Bush."
Contact staff writer Kevin Riordan at 856-779-3845, firstname.lastname@example.org, or @inqkriordan on Twitter. Read the metro columnists' blog, "Blinq," at http://www.philly.com/blinq