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Variety traits

Sunflower growing season

Helianthus annuus L.

The time from full emergence to the onset of harvest maturity of seeds, measured in days and depending on the maturity group and the sum of active temperatures.

In the reference 678 varieties crop Sunflower, where this is mentioned in the description.

The duration of the sunflower growing season covers the period from full emergence to the stage of physiological maturity, determined by the darkening of seeds, the drying of heads, and a seed moisture content of 10–15%. Plant development is assessed by interphase periods in accordance with the international BBCH scale.

The crop is divided into maturity groups ranging from ultra-early (80–90 days) to mid-late (116–135 days or more). The biological requirement for the sum of active temperatures above +10°C correlates with the duration of the period: early-maturing varieties require about 2000°C, while mid-maturing varieties require about 2150°C.

The length of the growing season directly affects yield: varieties with a longer formation period are potentially more productive but require a greater amount of heat. Proper selection of a maturity group allows agronomists to optimize crop rotation and avoid the impact of drought or frost.

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

Sources8

Varieties of Sunflower 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.

NK Delfi

Active

Helianthus annuus L. · Sunflower

SYNGENTA SEEDS AG, CH

AT BG CZ FR HR HU +1
13 records

Durban

Active

Helianthus annuus L. · Sunflower

Caussade Semences, F

AT BG FR IT RO SK +1
15 records

ES Romantic

Active

Helianthus annuus L. · Sunflower

Euralis Semences, Mondonville FR

BG FR HU IT PT RO +1
14 records

SY Bacardi CLP

Active

Helianthus annuus L. · Sunflower

SYNGENTA FRANCE S.A.S.

AT FR HU PT SK UA
14 records

Arena PR

Active

Helianthus annuus L. · Sunflower

Syngenta Seeds LTD (UK)

BG FR HR HU SK UA
12 records

Opera

Application submitted

Helianthus annuus L. · Sunflower

NOVARTIS SEEDS

BG CZ HR HU IT SK +1
12 records

Interstellar

Active

Helianthus annuus L. · Sunflower

MAS Seeds, F

FR HR IT PT SK UA
12 records

Sumiko

Active

Helianthus annuus L. · Sunflower

Syngenta Crop Protection,CH

AT HU IT RO UA
14 records

NK Kondi

Active

Helianthus annuus L. · Sunflower

SYNGENTA SEEDS AG, CH

BG FR HR HU UA
15 records

Imeria CS

Active

Helianthus annuus L. · Sunflower

Caussade Semences, F

BG IT RO SK UA
15 records

ES Petunia

Active

Helianthus annuus L. · Sunflower

Thierry Andre

CZ DE FR HR HU IT +1
14 records

Fushia CL

Active

Helianthus annuus L. · Sunflower

LIDEA FRANCE SAS

BG RO SK UA
13 records

RGT Wollf

Active

Helianthus annuus L. · Sunflower

Ragt 2n, F

AT IT UA
12 records

P64he133

Active

Helianthus annuus L. · Sunflower

PIONEER OVERSEAS CORPORATION

AT IT SK UA
14 records

Oscar

Active

Helianthus annuus L. · Sunflower

Rustica Prograin Genetique SA (FR)

CZ DE ES FR IT UA
12 records

Tutti

Active

Helianthus annuus L. · Sunflower

Syngenta Crop Protection AG, CH

AT FR HU SK UA
10 records

ES Bayano

Active

Helianthus annuus L. · Sunflower

Euralis Semences, Soltis

BG HR IT RO UA
14 records

Bambo

Active

Helianthus annuus L. · Sunflower

Union des Cooperatives de Semences de Tournesol (FR)

FR HU IT SK UA
13 records

SY Experto

Active

Helianthus annuus L. · Sunflower

Syngenta Crop Protection,CH

IT RO SK UA
11 records

ES Niagara

Active

Helianthus annuus L. · Sunflower

Euralis Semences FR

ES FR SK UA
13 records

ES Genesis

Active

Helianthus annuus L. · Sunflower

Euralis Semences, F

BG ES RO
11 records

NK Armoni

Active

Helianthus annuus L. · Sunflower

SYNGENTA SEEDS AG, CH

BG FR HR HU UA
10 records

ES Polaris CL

Active

Helianthus annuus L. · Sunflower

Euralis Semences

BG ES IT RO UA
12 records

SY Neostar CLP

Active

Helianthus annuus L. · Sunflower

Syngenta Crop Protection AG Seeds Divison

AT IT RO SK UA
12 records

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