Green Trust Alliance

Green Trust Alliance Green Trust Alliance is a nationally accredited land trust based in Baltimore County, Maryland and serving the coastal communities of the Mid-Atlantic region.

The GreenTrust Alliance is a nonprofit organization dedicated to restoring and protecting land that is ecologically degraded, by utilizing innovative funding, ecosystem markets, and strategic partnerships.

And end of summer Freaky Friday! It's the cockspur prickly pear! Along with the limestone prickly pear, until recently ...
09/04/2026

And end of summer Freaky Friday! It's the cockspur prickly pear! Along with the limestone prickly pear, until recently it was thought to be a phenotype of the eastern prickly pear. While most cacti prefer rough, high pH soils, the cockspur prickly pear's preferred soil is primarily coarse beach sand and ground oyster shells. No wonder archeologists use it to find the location of hidden prehistoric shell piles! Watch your step at the beach this weekend!

GTA recently donated 25 of our seed-grown native plants for a Scout project supporting the Itineris Foundation in Baltim...
08/25/2026

GTA recently donated 25 of our seed-grown native plants for a Scout project supporting the Itineris Foundation in Baltimore City. Itineris provides services and vocational pathways to young adults with neurological differences once they turn 18 and age out of most other support programs.

Did you know? GTA runs an experimental grow-out in Baltimore City, which often puts "random" plants in close proximity. ...
08/19/2026

Did you know? GTA runs an experimental grow-out in Baltimore City, which often puts "random" plants in close proximity. This summer, long-eared bees are aggressively competing for nectar in an area where native sunflower, black eyed susans, and primrose all bloom together.

A beautiful day out on restored tidal wetlands with South Baltimore Gateway Partnership , National Fish and Wildlife Fou...
08/17/2026

A beautiful day out on restored tidal wetlands with South Baltimore Gateway Partnership , National Fish and Wildlife Foundation , Baltimore City Planning, and GreenVest, LLC

🌳 FREE Washington Hawthorn Trees for Baltimore County Residents! 🌳We're giving away FREE 1-gallon native Washington Hawt...
08/11/2026

🌳 FREE Washington Hawthorn Trees for Baltimore County Residents! 🌳

We're giving away FREE 1-gallon native Washington Hawthorn (Crataegus phaenopyrum) trees to Baltimore County residents!
This beautiful native tree is an excellent choice for supporting local wildlife. Its spring flowers attract pollinators, its bright red berries provide food for birds through the winter, and it hosts over 100 species of moths and butterflies. Plus, its vibrant fall color makes it a standout in any landscape.

Growing Conditions:
🌞 Full sun to partial shade
🌱 Adaptable to many soil types, including clay
💧 Drought tolerant once established
📏 Mature size: 25–30' tall × 20–25' wide

⚠️ Please note: Washington Hawthorns have sharp thorns, so they're best planted away from sidewalks, play areas, and other high-traffic spaces.⚠️

How to get your free tree:
✅ Fill out the request form.
✅ Once you've submitted the form, we'll send you the pickup instructions for collecting your tree in Baltimore County.

Supplies are limited, so reserve yours today!

🔗 Sign up here: https://secure.lglforms.com/form_engine/s/IyAw-depWJNj8sQFx2caoQ


What a great way to wrap up the school year! Green Trust Alliance staff had an incredible time partnering with St. Mark ...
06/16/2026

What a great way to wrap up the school year!

Green Trust Alliance staff had an incredible time partnering with St. Mark School Catonsville as 50 enthusiastic 6th grade students dug in to help install a new pollinator garden on campus.

This hands-in-the-dirt project gave students the opportunity to learn about human impacts on the environment while taking direct action to support local pollinators and improve habitat right in their own community. The project also supports St. Mark’s Maryland Green School Certification.

Best of all, every student had the chance to plant a flower and leave their mark on a project that will continue to grow for years to come.

Thank you to the students and staff at St. Mark School for making this such a fun and meaningful day of environmental stewardship!

Sunday scaries: many of our public access and habitat conservation sites serve communities that have been overburdened ...
06/14/2026

Sunday scaries: many of our public access and habitat conservation sites serve communities that have been overburdened with heavy "shares" of local and regional pollution and industrial land uses that have impacted the landscape. Many of these disturbed, "legacy" sites have become the region's largest and most expansive urban parklands. A relatively "novel" invasive plant that we deal with in the landscapes of urban parklands is the "Asian Bush Honeysuckle." Technically 3 species and possible hybrids, these plants are very well adapted to disturbed soil (former landfills and factory soils) and are an impressive foe for us to keep facing. It casts a heavy shade cover which also stops native plants from growing into this space. Luckily, the 10'+ woody honeysuckles are readily controlled by cutting and then limited spraying or covering new growth in the following summer.

Tree planting season is over for now, and so GTA volunteers and staff have moved into our summer schedule of events. Wh...
06/10/2026

Tree planting season is over for now, and so GTA volunteers and staff have moved into our summer schedule of events. While South Baltimore and Brooklyn area fishing and hiking trails are dry and dusty now, summer rains will make for muddy walking and increased erosion into tidal waterways that are often just a few feet away. We recently worked with community members from Highlands and Brooklyn to clean up and mulch over 250 feet of fishing trail in a public park. 10 cubic yards of mulch was moved down the trail, and the trail's final improvement (removement of invasive bush honeysuckle "trees") will require some government permitting and coordination. Thank you so much to our community volunteers!

Our staff has been working for almost a year on propagating Allegheny Chinkapin seedlings for use in Baltimore area park...
06/08/2026

Our staff has been working for almost a year on propagating Allegheny Chinkapin seedlings for use in Baltimore area parklands. Historically common before area deforestation and the chestnut blight, these stresses led to very limited natural reproductive of the species. Ironically, the tree is resilient to air pollution, smog, and polluted rains, and would fare quite well in our area parks. Stay tuned for updates!

Sunday Scaries - American chestnuts and chinquapins (a smaller cousin) were some of the most common hardwood trees in th...
06/07/2026

Sunday Scaries - American chestnuts and chinquapins (a smaller cousin) were some of the most common hardwood trees in the eastern American forests of the 1800s. Due to the Asiatic chestnut blight in the early 1900s, very few large chestnut or chinquapin trees remain east of the Mississippi River. Our greenhouse work (chinquapin) and a new partnership with the Maryland Chapter of the American Chestnut Foundation are working towards understanding the possible future role of both tree species in Maryland's forests.

Address

201 International Circle, Suite 230
Hunt Valley, MD
21030

Opening Hours

Monday 8am - 6pm
Tuesday 8am - 4:30pm
Wednesday 8am - 4:30pm
Thursday 8am - 4:30pm
Friday 8am - 4:30pm

Telephone

+14434450068

Website

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