Variety traits

St. John's wort plant height

Hypericum L.

A morphological trait that determines productivity and the yield of medicinal raw materials, measured during the mass flowering phase.

In the reference 9 varieties crop St. John's wort, where this is mentioned in the description.

For Hypericum perforatum, the typical height in cultivation ranges from 40 to 100 cm. Values of 70–90 cm indicate active cultivar development and favorable conditions, whereas values of 40–50 cm are often caused by unfavorable factors, such as excessive row spacing.

Plant height directly correlates with the yield of green mass and the efficiency of mechanized harvesting. Different cultivars show varying growth dynamics during the growing season, while other species, such as Hypericum olympicum, reach only 40 cm in height, which limits their medicinal use.

General information about the subject — on the page Plant height.

Sources8

Varieties of St. John's wort mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.