Anatomy Of A Marijuana Flower And Explanation Of The Pollination Process

I love marijuana flower anatomy and pollination

Marijuana flowers and pollination

The cola of the cannabis plant consists of sub-units. They are a composition of buds. Single female flowers are brought together to form buds. The female flowers are also called pistils and on them are formed the stigmas in which pollination occurs.

Before the marijuana plant reaches maturity its cola is composed by sub-units that are preparing to be filled out. In this period of the plant’s growth it is done stretching and the bud sites are starting to develop. It depends on the strain, when the development will start. It may begin in the middle of the period of flowering.

Each and every sub-unit is composed of a bud or in other words of the cluster of female marijuana flowers that are single. The flowering period is the time when new flowers are forming on the top side of the sub-units. This period is recognised by the small stigmas which are formed on the new forming pistils or single flowers which are thin and have white hairs. The stigmas are two hairs which are coming out of the pistil. Download my free marijuana grow bible at this link for more information about growing marijuana.


Pollination occurs when pollen from the male marijuana plant reaches the female stigmas and finds its way to the egg cell of the female plant that is inside the pistil. After the process of pollination, the seed is produced.  An interesting fact is that growers prefer sensimilla which is the name for cannabis plants that are not pollinated and do not have seeds.

The structure of the female flower that is called glandular trichome produces resin on the flowers and leaves close to them. It looks like a ball that is on top of a small neck. If you treat the buds roughly, the trichomes might break off.

Older pistils are larger. Their stigmas are still in search of pollen. There is a smaller leaf which is located under the pistil and is named stipule.  They are more noticeable in pre-flowers. If there are brown to red hairs that are coming out of the stigmas, it can still receive the pollen of a male plant.


The stigmas die after heavy rains or winds. After this they become dry and their colour is brown and red. This is a normal stage of the marijuana plant’s life. When the pistils are completely mature, the stigmas die out and leave the way to pistils to become fat and lose their turgidity.

In this stage the pistil cannot receive pollen any longer. It is in a phase of dying. Resin production can be slowed down or entirely stopped if this happens to most of the pistils. After the death of the stigmas and the pistil, its hairs can break down very easy.

In conclusion, if we observe the pistils in their different phases of development, we will find out that their bodies have brown hairs and white ones too on top of the sub-units with newly formed pistils even during the maturation period. This shows that the pistils in the bud do not have a synchronized maturation. They become mature one after the other gradually.

If you want start growing marijuana outdoors download my free grow guide and order some high quality seeds at this link here. We ship seeds to the US, CA and many other countries. For any growing related question please visit the marijuana support page.


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One thought on “Anatomy Of A Marijuana Flower And Explanation Of The Pollination Process

  1. Sensational site, lots info, first time outdoor grower, help no end, been researching heaps, have 1 auto pounder, 1 purple crack and 1 pineapple cross, had trouble with nite burn, but finally worked out, 1 cap charlie carp, 1 cap seasol, 1 cap seasol power feed in 9L watering can early morning dose and plants have exploded, slight burn on auto but other 2 have boosted flat out, thank you so much, your info has been invaluable, I’ll order soon and see if seeds are as good, cheers

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