some good news for us; but it's still not guaranteed.
Figure 6. A: Pistillate female flower (stigmas, style, perigonal bract and stipule), B: spike, C: inflorescence, D: formed perigonal bract, E: hard seed.
On dioecious female plants, the appearance of the first perigonal bracts with no styles indicates that the female inflorescences will soon flower (code 2200). The inflorescence of female plants is leafy and compact. The female flower is hidden within the perigonal bract and is small, green and inconspicuous. At anthesis (pollen release) two styles protrude from each perigonal bract (Figure 6. A). One female plant has numerous flowers in different developmental stages (Figures 6. B-C). We define the beginning of female flower formation (code 2201) as when the first styles are visible, and the peak of this flowering stage is reached when about 50% of the bracts within the inflorescence are formed, independent of whether styles are visible or not (code 2202; Figures 6. A, D)
"Decimal code for growth stages of hemp (Cannabis sativa L.)". Vito Mediavilla[SUP]1[/SUP], Manuel Jonquera[SUP]1[/SUP], Ingrid Schmid-Slembrouck[SUP]2[/SUP] and Alberto Soldati[SUP]2[/SUP], Swiss Federal Research Station for Agroecology and Agriculture.