Variety traits

Vegetation period of fennel

Foeniculum vulgare Mill.

Phenological characteristics of fennel determined by the intended use (greens, seeds, or vegetable bulb) and climatic conditions. The period from emergence to technical maturity for vegetable varieties is approximately 75–78 days, while the full seed ripening cycle takes from 130 to 200 days.

In the reference 10 varieties crop Fennel, where this is mentioned in the description.

The duration of the vegetation period of fennel depends on temperature, humidity, and day length. Seedlings typically emerge 10–30 days after sowing. To obtain a marketable bulb, it is critical to avoid premature bolting, which is triggered by long days and moisture stress, causing the plant to move to flowering, bypassing the stage of technical maturity.

In fennel cultivation practices, considering the vegetation period determines the choice of growing method and the timing of field operations. Vegetable types require specific care, including multiple hilling to blanch the bulbs, whereas for seed production in regions with short summers, it is necessary to use early-maturing varieties or a transplant method to complete the full development cycle before the onset of cold weather.

General information about the subject — on the page Vegetation period.

Sources8

Varieties of Fennel 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.