Compare 3 Shops
| Product | Pack | Price | Per Seed | |
|---|---|---|---|---|
Black Jack
Weedseedsexpress
Best per seed
|
12 seeds | €49.00 | €4.08/seed | View Deal |
|
Black Jack
Weedseedsexpress
|
6 seeds | €34.00 | €5.67/seed +€1.58 vs cheapest | View Deal |
Black Jack
Blimburn Seeds
|
25 seeds | €177.49 | €7.10/seed +€3.02 vs cheapest | View Deal |
|
Black Jack
Weedseedsexpress
|
3 seeds | €24.00 | €8.00/seed +€3.92 vs cheapest | View Deal |
Black Jack
Blimburn Seeds
|
9 seeds | €73.99 | €8.22/seed +€4.14 vs cheapest | View Deal |
Black Jack
SeedsmanUSA only
|
3 seeds | €26.00 was €24.00 until 2026-08-28 $30.00 at the shop, converted at 1.1537 | €8.67/seed +€4.58 vs cheapest | View Deal |
Black Jack
Blimburn Seeds
|
6 seeds | €57.49 | €9.58/seed +€5.50 vs cheapest | View Deal |
Black Jack
Blimburn Seeds
|
3 seeds | €30.99 | €10.33/seed +€6.25 vs cheapest | View Deal |
Black Jack
Blimburn Seeds
Cheapest pack
|
1 seed | €11.99 | €11.99/seed +€7.91 vs cheapest | View Deal |
Prices from shops that bill in another currency were converted to euros at the European Central Bank reference rate of 2026-09-16. You pay the shop's own amount, which is shown next to it.
Genetics / Lineage
Compare Black Jack with another strain
About Black Jack
Black Jack is a feminized hybrid strain from Sweet Seeds. Best in a temperate climate, medium in height, heavy in yield. Budget 56 to 77 days of flowering. Genetics: Black Domina x Jack Herer. THC is listed at 15.0 to 21.0 percent. 9 priced offers at 3 shops, from €11.99 or €4.08 per seed. Sold in packs of 1, 3, 6, 9, 12, 25 seeds. The most expensive listing is €177.49.
Same kind, what it costs elsewhere
Other hybrid feminized seeds in the index, cheapest per seed first.
| Strain | Breeder | Pack from | Per seed | vs this page | |
|---|---|---|---|---|---|
| Classic Skunk | Zamnesia Seeds | €2.86 | €1.94 | €2.14 cheaper | Offers |
| Cash Express | Zamnesia Seeds | €2.86 | €1.95 | €2.13 cheaper | Offers |
| Bubblegum | MSNL | €3.12 | €2.08 | €2.00 cheaper | Offers |
| MAC 1 | MSNL | €3.38 | €2.47 | €1.62 cheaper | Offers |
| Alien OG | MSNL | €3.38 | €2.47 | €1.61 cheaper | Offers |
| Animal Cookies | Blimburn Seeds | €3.38 | €2.47 | €1.61 cheaper | Offers |
Per-seed prices come from the cheapest priced pack at any shop that lists the strain. Packs differ in size, which is exactly why the comparison is per seed.
Questions about Black Jack
How much does one Black Jack seed cost?
€4.08 per seed, in the 12 seed pack at Weedseedsexpress. The single seed pack works out at €11.99 per seed, so the larger pack saves €7.91 on every seed.
How many seeds are in a pack of Black Jack?
Six sizes are listed: 1, 3, 6, 9, 12 and 25 seeds, at €11.99, €24.00, €34.00, €73.99, €49.00 and €177.49.
How long does Black Jack take to flower?
56 to 77 days, according to the shop that lists it.
Is Black Jack feminized, autoflowering or regular?
Black Jack is sold as feminized seed. It is described as hybrid. The listed climate is temperate.
Where can I buy Black Jack seeds?
Nine offers in this index, at Blimburn Seeds, Seedsman and Weedseedsexpress. Prices are read from the shop's own feed and updated daily.