I have another question. Do female weed plants produce seeds at all?
excerpt from something i wrote....
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Flowering - As we learned earlier, Cannabis is dioecious. This means the plants are either male or female. A single plant can also have both male and female flowers and is called a hermaphrodite - but we'll learn more about that condition later.
During flowering, males start to develop their flowers that will soon fill with pollen. Because pollen is necessary for seeds, the male plant usually (but not always) begins flowering first. Male flowers are easily recognized as they are pale green or red/purple in color and look like little balls. Once the balls fill with pollen and the pollen is released, the male plants die.
Female flowers (or buds) have two small, fuzzy white hairs coming out of modified leaves called bracts and bracteoles. These modified leaves enclose the developing seed and form into dense groupings called buds. The most noticeable difference between early male and female flowers is males lack the two fuzzy white hairs called stigmas.
These flowers continue to bloom and grow until fertilized with pollen. After fertilization, seeds begin to form and grow. Flowering usually lasts two months but that depends a lot on the genetic strain and growing conditions.
Seed Set - is the final stage and is only reached by pollinated females. The male plants have already withered and died. Female plants that have been pollinated, produce more and more seeds that take from ten days to five weeks to develop and mature. Once seeds are finished being produced, the plant dies and drops its seeds.
Female plants that have not been pollinated grow big resinous buds without seeds called sinsemilla. Sinsemilla means "without seeds" in Spanish.
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hope this helps...