Soils & Grow Mediums

The Drowned Lands: New York’s Black Dirt Region

Brought to you by ARBICO Organics

In May I was lucky enough to spend some time on a farm in the Black Dirt Region in Orange County, New York. Only about 50 miles northwest of New York City in the lower Hudson Valley, this area is characterized by beautiful estates, orchards and vineyards, charming Colonial-era villages, picturesque farms, and fields of deep black dirt. All of these can be found elsewhere, except for that dirt.

Before I go any further, I want you to imagine the softest and silkiest potting soil that you’ve ever seen. That is what New York’s black dirt is like – in fact, it’s more like powder than soil. This special soil was formed some 12,000 years ago after a glacier receded, leaving a bog in place of the ancient lakebed. After that, repeated flooding in the area augmented the development of the swampland and added to the soil profile. The deep layers of decayed plant matter in the bog created a soil rich in nutrients (notably sulfur) that is anywhere from 3 to 30 feet deep (some claim as much as 300 feet). This region of New York contains 26,000 acres of Black Dirt, making it the largest concentration of farmable soil of this sort in the US. The only other place you’ll find as much is deep in the Everglades and inaccessible to farming.

The earliest settlers to the region dubbed this area the “Drowned Lands” due to the soggy nature of the soil. There were many attempts made to drain and manage the land, with various levels of success and resistance to the attempts (see here for more on that story). In the later part of the 1800s, Polish and Volga German immigrants began arriving in the area. Unlike many of their earlier counterparts, they recognized the soil as like the humus-rich soil in their homelands and knew just how to handle it. They proceeded to dig a network of drainage ditches that dried out the soil and created perfect fields of fertile farmland, with crowns of dry land popping up in here and there like islands (which is exactly what they’re called by locals). To this day, Pine Island, New York remains the epicenter of the Black Dirt Region.

The physical qualities of this soil are remarkable, but its nutrient-rich composition is the star of this show. Black Dirt is between 30-90 percent organic material (most soil is roughly 10 percent). According to Maire Ullrich, an Orange County agricultural extension agent, “It’s basically a giant bowl of compost”. The decayed plant material that creates this compost-like soil also provides a healthy dose of nitrogen and sulfur. This unique sulfur-richness is what makes it exceptional for growing the most famous crop of the Black Dirt Region – the onion.

Onions, onions, onions – the cultivation, tradition, and business of onions is always swirling around the Drowned Lands. The predominant onions of this area are the tennis ball-sized yellow onions with papery skin that we are all familiar with. The sulfur in the soil increases the sugar content in onions and gives it a delicious strong, rich onion taste that turns exceptional when caramelized. It’s also hard to beat in a soup (here’s a local recipe to try).

It’s not just onions that grow well in black dirt, of course. All the root vegetables (beets, carrots, garlic, radishes) love to grow down into that rich soil. Lettuce of all types, kale, kohlrabi, and cabbages all thrive as well. In the last 25 years or so, growing sod has become a reliable venture and, even more recently, hemp has proven itself in the area. As you can see, it might be challenging to find something that does not grow well in black dirt.

Plants are not the only things that farmers are pulling out of the black dirt. As a testament to what was once a robust prehistorical world in the lower Hudson Valley, there have been an abundance of fossils found. According to this article, there are actually three distinct geological layers in the area: the deepest level is clay, the middle level is a mix of peat and clay and the black dirt makes up the top layer. Peat bogs are famous for preserving artifacts; in some parts of the world, they may be “bog bodies”, but in this part of New York the peat/clay layer of the black dirt has been holding onto prehistoric fauna. Mastodon finds are arguably the most impressive; not just for their size (the largest animals that roamed the area) but due to their rarity. More mastodon remains have been found in New York State than any other place on Earth and more have been found in Orange County than any other part of the state (more on that here). Mastodons are not the only ancient creatures coming to light, stag-moose, giant beavers, peccaries, reindeer, and ground sloths have also been found. Many of these fossils are discovered as farmers do maintenance on their drainage ditches after the growing season, but they are under no obligation to turn them over to authorities so there may be other types of animal fossils out there they the public has not seen.

I want to thank Gigi and Farmer Bobby for their hospitality. It was a joy to see the endless enthusiasm they showed for their beautiful part of the world. Oh, and, thanks Gigi for the great pictures!

Pam Couture is the Lead Content Writer at ARBICO Organics. She lives in Tucson, Arizona, where she is surrounded by family, friends, and nature. ARBICO Organics can be contacted at 800.827.2847 and you can visit their website at

Related Articles & Free Email Newsletter Sign Up

How to Create High Quality Compost in Less Than 5 Weeks

Improving Soil with Greensand

The Benefits of Using Organic Fertilizer & Soil Amendments

Shop for High Quality CBD Products with No THC

Subscribe to our Free Email Newsletter

Comment here