When the fan leaves absorb the light from the sun, and new leaf growth appears, the stem will become thicker and stronger. When this happens, more internodes develop around the stem. The structure of cannabis plants is due to the stem, which gives structure to the cannabis plant and supports the leaves, flowers, and branches. The stem comprises a vascular system, including the phloem and xylem. These two parts of the vascular system helps give the entire cannabis plant the support and structure it needs to grow. Growers will usually cut off the top of the stem, allowing the plant to grow even more flowers.
Stigmas
As part of a marijuana plant’s reproductive system, the stigmas are the white hair-like strands that grow on the plant’s pistils. Stigmas are an essential part of the anatomy of a cannabis plant, as these hairs collect the pollen from the male plants and are responsible for creating cannabis plant seeds. After the weed plant is mature, the color of the stigmas can change from white to hues of yellow, orange, red, and, finally, brown. An important note to highlight is that stigmas don’t influence the potency or taste of weed.