Odds of getting female seeds

It is common knowledge that a regular (non-feminised) cannabis seed can have 2 orientations or sexes – male or female. It is almost as common knowledge to know that each regular seed has a 50/50 chance of being either sex (50% chance of being female and 50% chance of being male). In other words, if you have 1 regular marijuana seed, it has an equal chance of producing a male plant or a female plant.

A question that we are often asked, is “how many regular seeds should I buy if I want to have X plants?”. Well the answer is, you can’t guarantee that you will get X number of female plants, but you can increase your chances by buying more seeds.

So without further ado, here is the table:

 

The table below shows the number of seeds down the left (i.e. the number of regular seeds you are going to buy) and the chances of getting the minimum number of feminised seeds displayed in the top row.

For example, if you were to buy 6 regular seeds, you’ve got a 65.5% that at least 3 of them will produce female plants.

Please note: some feminised seeds are said to be 99.9% female whereas others say 100% and this table also does not take into account the possibility that plants may hermaphrodite (produce both buds and seeds).

  1 fem 2 fems 3 fems 4 fems 5 fems 6 fems 7 fems 8 fems 9 fems 10 fems
1 seed 50.0%
2 seeds 75.0% 25.0%
3 seeds 87.5% 50.0% 12.5%
4 seeds 93.8% 68.8% 31.3% 6.3%
5 seeds 96.9% 81.3% 50.0% 18.8% 3.1%
6 seeds 98.4% 89.1% 65.5% 34.4% 10.9% 1.6%
7 seeds 99.2% 93.8% 77.3% 50.0% 22.7% 6.3% 0.8%
8 seeds 99.6% 96.5% 85.5% 63.7% 36.3% 14.5% 3.5% 0.4%
9 seeds 99.8% 98.0% 91.0% 74.6% 50.0% 25.4% 9.0% 2.0% 0.2%
10 seeds 99.9% 99.8% 95.4% 83.7% 63.2% 42.7% 17.2% 5.5% 1.1% 0.1%

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