The State We're In

Saving rare Pickering’s morning glories

Jul 18, 2019

Anyone who’s planted “garden variety” morning glories knows how easily they grow. These showy annuals climb like crazy and produce lots of seeds. New plants pop up year after year and are almost unstoppable!

But that’s not the case with the delicate perennial known as Pickering’s morning glory, one of New Jersey’s rarest and most endangered plants.

These petite and lovely wildflowers grow on sunny sand dunes in the Pine Barrens, their long vines trailing along the ground. The star-shaped white flowers bloom in early summer.

For years, Pickering’s morning glories have been close to extinction in New Jersey. But now they’re getting much-needed help from the state, nonprofit conservation groups, and a cadre of volunteers.

Even when first discovered in the late 1800s, Pickering’s morning glories were rare. Only about 25 populations were documented throughout the entire Pine Barrens, a region covering roughly a million acres.

Since then, many historic populations were damaged – or completely wiped out. Some were lost to forest shading when a lack of wildfires allowed trees to grow on sand dunes.  Others were destroyed by illegal off-road vehicles, as thrill-seeking riders tore across dunes and vegetation. Some declined when their habitats were covered by development. Illegal dumping of construction debris and competition from alien invasive Chinese bush clovers also took a toll.

Today, only three healthy and stable populations remain in New Jersey, with another dozen just hanging on.  But there’s still hope!

Just this year, New Jersey’s Office of Natural Lands Management increased their efforts to help Pickering’s morning glories and several other rare plants. Bob Cartica, program administrator, said his office is working on a five-year recovery plan for Pickering’s morning glories.

“It’s very important that we maintain the occurrences of the species in the state,” said Cartica, noting that Pickering’s morning glory is primarily a southern species. “It occurs in New Jersey – and North Carolina, South Carolina, Georgia and Alabama – and not in between.”

Initially, the state is focusing on four populations in Wharton State Forest. “We’re trying to foster conditions that will protect and enhance these occurrences,” he explained. Measures include building barriers to stop off-road vehicles, and removing invasive plants, debris and litter, and shade-casting trees.

A stewardship project spearheaded by Duke Farms in Somerset County is also helping. Two summers ago, Pickering’s morning glory seeds were collected in the wild, and the staff at Duke Farms developed a technique for germinating the seeds and nurturing the hard-to-grow plants in a greenhouse.

Last fall, 44 tiny plants were transplanted from the Duke Farms greenhouse into a fenced experimental plot at New Jersey Conservation Foundation’s Franklin Parker Preserve in the Pine Barrens. “Thirty-two survived the winter and are growing quite nicely,” reports Dr. Emile DeVito, staff biologist at New Jersey Conservation Foundation.

Duke Farms is continuing to germinate and grow new plants, and dozens will be ready for transplant this fall.

Warm, wet weather also seems to be providing favorable conditions for Pickering’s morning glories.  After three consecutive rainier-than-usual years, said Emile, new plants are sprouting on their own at historic locations where populations had been struggling.

“It’s like the event we’ve been waiting for,” he said. “We think the seeds were there in the soil, just waiting for the perfect conditions. It’s providing an excellent chance for these populations to rebound.”

Bob Cartica agreed: “Their seeds can be viable for a very long time, maybe decades.”

Now that new Pickering’s morning glory seedlings are appearing, the nonprofit Pinelands Preservation Alliance is assisting by coordinating a census of all known populations.

With luck and some human help, these rare wildflowers may eventually return to historic levels in New Jersey. Kudos to all who are helping!

To learn more about the Pine Barrens and the challenges in protecting rare plants, visit the Pinelands Preservation Alliance website at

For more information on the Duke Farms greenhouse project, including two videos, go to

To learn more about the state’s rare plant species, visit the New Jersey Department of Environmental Protection website at

And for more information about preserving New Jersey’s land and natural resources, visit the New Jersey Conservation Foundation website at or contact me at

About the Authors

Alison Mitchell

Co-Executive Director

John S. Watson, Jr.

Co-Executive Director

Tom Gilbert

Co-Executive Director, 2022-2023

Michele S. Byers

Executive Director, 1999-2021

View their full bios here.


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