Dallas ? All palms are green, but some are greener than others.

So say churches that are paying a little extra for “eco-palms” to use in Palm Sunday services today.

These palm stems come with the promise that they were cut selectively to help preserve tropical forests in Guatemala and Mexico. Eco-palms also mean more money for the Indians who harvest and process them.

“It seemed like a no-brainer to me,” said Betty Picard, art and environment coordinator at Our Lady of Angels Catholic Church in Allen, Texas, which bought more than 1,000 eco-palms for today’s services. “How can you be a church and not try to do something both for people and the environment?”

Palm Sunday, the beginning of Holy Week, recalls Jesus’ entry into Jerusalem. The gospels describe the crowds as waving tree branches and placing branches and cloaks to soften his way. The Gospel of John specifies palm branches.

By some estimates, 300 million palm stems are imported annually into the United States, with about 10 percent used by churches for Palm Sunday processionals and decorations.

But according to Dean Current, a natural resource economist at the University of Minnesota who has worked extensively in Latin America, there have long been environmental and economic downsides to palm-stem production.

Workers have been paid by volume, leading to overharvesting and waste, he said. And the middlemen who contract with U.S. importers have made a lot more money than the villagers who do the cutting.

In 2000, Current was hired by the North American Commission for Environmental Cooperation to study whether palm-stem production could be certified as environmentally sustainable, like the certification of organic or “shade-grown” coffee.

From that came the notion of eco-palms. Current said the name was suggested by colleagues at the commission and hasn’t been copyrighted.

Current, through a program at his university, has worked for the last few years to put the eco-palm idea into practice in a few communities of Guatemala and the state of Chiapas in Mexico.

One way has been to pay harvesters by quality rather than quantity. The selection occurs before cutting, reducing waste and protecting the forests.

Another technique has been to have importers work directly with the indigenous people of the forest communities, instead of through contractors from more urban areas of Guatemala and Mexico.

Through the no-middleman approach, Current said, local men do the cutting and local women become a part of the work force by bundling and grading the foliage.

The marketing of eco-palms began in 2005 with a small pilot program in Minnesota, which placed a few thousand stems with churches there. Last year, Current and his staff – assisted by a local distributor – went national. Thanks to news coverage and to endorsements from some denominations, sales grew to about 80,000 eco-palms in 34 states.