Copper Chem
$65.00
Chem 4 crossed back over Stardawg. Greg Krzanowski bought thirteen seeds out of a parking lot at Deer Creek in 1991, JJ NYC built Stardawg from what came after, and this folds that family back onto itself with nothing outside it. Eleven years as the Greenpoint flagship and the pack most of the programs in this catalog got started from.
Chem 4 x Stardawg | Regular photoperiod | 10 seeds | 75-85 days | Harvest: Feb 2026
The Cross
There is no outside genetics in Copper Chem. Roughly 75% Chem 4 to 25% Chem D, and every branch of that walks back to the same bag.
The construction is the point. Chem 4 goes over Stardawg, and Stardawg is itself Chem 4 run back over Tres Dawg, which is a Chem D heavy backcross. Nothing gets blended in. The family gets folded onto itself.
The Parents
Greg Krzanowski was seventeen when he bought an ounce off two travelers at Deer Creek Amphitheatre in Indiana, June 1991. Thirteen seeds came out of it. Everything this country has called gas since walks back to those thirteen.
Chem 4 came out of that group late, popped years afterward when the original crew got back together. JJ NYC of Top Dawg Seeds carried the line forward: Chem D over an Afghani male, backcrossed twice into Tres Dawg, then Chem 4 over that to make Stardawg. His male is what Greenpoint has been building on since 2014.
What’s In The Pack
Ten regular photoperiod seeds, males included. The reason breeders keep coming back to this one is what Chem does to a project. Whatever you cross into it brings the yield and the resin for free, which leaves you free to paint any profile you want over that backbone. And because Chem sits under so much of the modern gene pool, it does not fight what you put on it. Cross a hyped modern hybrid to Stardawg and the shared lineage expresses, which means you can isolate the thing that made that strain move and pull it back out in seed form.
Run Chem 4 back over Copper Chem and you are refining the Dog another generation.
In The Garden
75-85 days. Beginner friendly, high yield, and genuinely mold and pest resistant, which is most of why it stayed the flagship for eleven years.
| Weight | 0.21 oz |
|---|---|
| Quantity | Full pack – 10 regular photoperiod seeds, Wholesale – 20 packs, Wholesale – bulk 1,000 seeds, Wholesale – bulk 500 seeds, Wholesale – 10 packs |
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63 reviews for Copper Chem
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she is such a beast. just look at her. This was my first run of this strain but wow. 3 out of 5 were females and 1 pheno was just blowing me out of the water with the production. A+ shes a keeper for sure
Every seed sprouted 9 females in the bunch, just one word fantastic I’m going to say it again fantastic here’s a picture
Let me first say that this is some fantastic herb. I popped 3 beans and ended up with two females from that. One had a very sour scent. One had a very sweet scent. I also popped 3 dynamite diesel for this run and ended up with 2 females also. 100% germ rate using “Subcools” rapid rooter method. Growth was vigorous. Bud to leaf ratio was excellent and the bud density was very nice and tight. 73 days to ripeness for both. The sour was a bit gassy and floral. Delicious. The sweet pheno was just as delicious with a mild yogurt finish. Super nice. Potent as F! A very stony buzz with legs. All in all I was very impressed. I let them grow straight up to the 5th node and topped them back to the 3rd. Then i tied them down and opened up the split to light. 10 week veg because of all my LST work and training. Be careful with this strain. pretty easy to hit the lights. lots of stretch. Node spacing is about perfect for me at about 5 inches. I got 7 half gallon wide mouth jars of nice dried nug from each plant. Considering they were all under 5 feet tall thats pretty good. Tastes better than anything at the local dispensary. All in all im very happy with this plant and cant wait to grow it again. (However i just popped an 11 pack of “Eagle Scout” with 100% germ rate using “subcools” rapid rooter method.
This is my first experience growing Greenpoints gear. So Far im thrilled and have 2 more projects going involving their geneitics. This is the first time ive ended up with something that looks just like the pic on the breeders website.
Im a Seahawks fan for life. But this time ive got to give some real love to Denver. This is a great product. Cheers. ill post a few pics when i figure out how. 🙂
I ran canna coco on the low end of the EC chart with 35% perlite. Full line. .7 -.8 EC in Veg seemed to be enough. Bumped up to .9 EC at peak in flower. All of which under 2000 watts in a 5×9 gorilla grow tent.
One of the best strains I’ve ever grown. Checks all the boxes and super easy to find amazing phenos I’ve had two that were just top notch. Thank you Greenpoint.
i was very lucky popped 5 beans and got 5 females they respond well to topping and LST this is without a doubt one nasty ass palnts stinky fuel and garlic this is couch lock bud which there were pelnty off great yield and great smoke
ok this was a first for me with this strain.. and out of the box i was happy 5 out of 5 females ..i grew in a mix perlite coco and foxfarm happyfrog soil useing all foxfarm nutes under 1200 watts of leds the responded well to topping and LST they went for 65-72 days to finish beautiful smells ohhhey goooey buds tons of trics the smoke was couch lock it wil end your night lol i have the other 6 neans all in veg now this is going to be a stapel in my garden please excuse all the spelling and gramha mistakes this is a new cromebook and dosent spell ay better than i do
There is a reason that this is the flagship strain of GPS. Consistency of phenotypes, MASSIVE yield, and potency are just a few of things worth mentioning. There’s the pinesol pheno, then theres the lemony skunk smelling pheno, then theres the pure fuel. My favorite strain. I could care less for feminized seeds for the sake of getting these dialed in. This strain put these guys on the map, for me at least. Too bad theres a 5 star limit. This strain deserves 50 stars. No exaggeration. If you have time and space grab at least 2 packs of these.
popping 1 at a time, this female was fire. smelled like straight curry when drying.flowers could have been a little denser but no other complaints.
My Copper Chem is just getting ready to harvest. Very similar looking pheno as Oggy’s, shown Topped once around the 3rd node, and has several large, dense tops, trichomes galore! This cola accidentally snapped, as I was using bamboo stakes, yet that cola was not affixed, and snapped, hanging low.
Next check in, it had snapped the stem and was starting to dry.
I might as well test this cola, as it’s looking like it’s getting cloudy trichs!
A beautiful strain!
I’ll always be back to grow Greenpoint Seeds!
My first run with GPS gear. Very happy, the copper chems all had hollow stems and were hard to clone
9 out of 11 seeds germ’d and 6 made it through the seedling stage. Some smell fruity, one smells like straight up rubber.
Very happy with the yield and quality. The customer service has been excellent too!
Thanks GPS, Heisen, and Gu. Looking forward to the next run! So many choices haha