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If you’re a fan of the frosty, funky cannabis on today’s market, you owe a debt of gratitude to Greg “Chemdog” Krzanowski. This Massachusetts-based grower and breeder has helped lay the foundation for the modern marijuana industry, discovering some of the most celebrated marijuana strains in the world.

Krzanowski is famous for popularizing the classic Chemdog line, also known as Chemdawg. He first discovered the Chem 91 and Chem Sis phenotypes in 1991 and has preserved them for more than 30 years. Later, he and his friend, Joe Brand, would come across the iconic Chem D and Chem 4. Since their discovery, these Chem phenotypes have been used by countless breeders to create many of the cannabis strains we enjoy today.

Unfortunately, Krzanowski was arrested in 2011 after his grow operation was raided by police. In an interview with Cannabis & Tech Today, he said:

“I think that getting in trouble put me in the position where I am now, to do what I am doing. I’m not sure where I would have been if I didn’t get in trouble… not in a bad way, just where I would have been, would I have kept growing in my home and just stayed like that? I think it put me in a position to be in a legal market, do what I want to do, and do it legally.”

Greg Krzanowski still plays an important role in the cannabis industry. He has recently partnered with Canna Provisions—a cultivation and retail business based in Massachusetts—to start his first legal grow operation.

At Greenpoint Seeds, we offer a wide range of strains that descend from Krzanowski’s illustrious Chem strains. Shop our Chemdog seeds today.


Customer Reviews

Robert Jaeger says:


So far so good

2023-03-31 16:26:19 March 31, 2023

Anonymous says:


Outstanding customer service

2023-03-31 15:42:38 March 31, 2023

Thomas A. says:


I’m growing a bunch of greenpoint strains right next to exotic genetics and ethos genetics plants. They’re stacking up well so far

2023-03-31 13:04:39 March 31, 2023

Anonymous says:


Straightforward website with quick order processing and delivery, couldn’t have been easier.

2023-03-31 11:09:22 March 31, 2023

Anonymous says:


Very nice selection. Never needed to use customer service ad my seeds have been delivered in a timely fashion with no issues every time.

2023-03-31 10:09:13 March 31, 2023

Ralph B. says:


Great company

2023-03-31 03:31:01 March 31, 2023

Richard says:


Order 20 different packs no problems at all!

2023-03-30 18:14:18 March 30, 2023

Camden says:


Quick delivery, good service, and helpful.

2023-03-30 15:58:26 March 30, 2023

Tim O. says:


Fast delivery

2023-03-30 13:15:58 March 30, 2023

William says:


Website is very well laid out. Answered any questions I had quickly. Fast shipping and delivery.

2023-03-30 13:01:28 March 30, 2023

Jerry Banks says:


3 purple crunch poles and are smoking like top shelf

2023-03-30 06:00:55 March 30, 2023

Matt Jones says:


That's good but genetics not stable

2023-03-29 18:13:17 March 29, 2023

Gregory B. says:


I love getting my seeds from greenpoint seeds as all the ones I have got pooped 100 percent.

2023-03-29 16:08:17 March 29, 2023

Russell M. says:


Great customer service

2023-03-28 17:26:43 March 28, 2023

nathan A. says:


Great website. Love the reverse auction!

2023-03-27 17:10:24 March 27, 2023