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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.

ES Ceylon SU

Active

Helianthus annuus L. · Sunflower

Euralis Semences FR

BG ES IT UA
8 records

I.B.H. 166

Active

Helianthus annuus L. · Sunflower

CZ ES FR SK
8 records

ES Epic

Active

Helianthus annuus L. · Sunflower

Euralis Semences FR

BG FR IT UA
9 records

Reall

Active

Helianthus annuus L. · Sunflower

Sebastien Chatre

FR IT UA
7 records

ES Belfis

Active

Helianthus annuus L. · Sunflower

Euralis Semences

BG IT UA
8 records

SY Cadix

Active

Helianthus annuus L. · Sunflower

Syngenta Crop Protection AG

ES UA
6 records

SY Theos

Active

Helianthus annuus L. · Sunflower

Syngenta Crop Protection,CH

IT SK UA
10 records

Suvex

Active

Helianthus annuus L. · Sunflower

Syngenta Participations,CH

HU RO UA
10 records

Rigasol OR

Protection expired

Helianthus annuus L. · Sunflower

PHILIPPE JOUVE

FR RO UA
7 records

P64le163

Active

Helianthus annuus L. · Sunflower

Pioneer Overseas Corporation, USA

RO SK UA
11 records

Marvic

Active

Helianthus annuus L. · Sunflower

MAS SEEDS

FR IT UA
8 records

Malaga CS

Active

Helianthus annuus L. · Sunflower

Pierre GARRAUD

IT RO UA
7 records

LG50540 CLP

Active

Helianthus annuus L. · Sunflower

ROUANET

IT SK UA
8 records

Hysun 231 HO

Active

Helianthus annuus L. · Sunflower

PHILIPPE JOUVE

PT RO UA
7 records

Fergus CLP

Active

Helianthus annuus L. · Sunflower

Syngenta Participations,CH

HU SK UA
9 records

Florasun

Active

Helianthus annuus L. · Sunflower

TEODORESCU ANDREEA

IT RO UA
9 records

Estrada

Active

Helianthus annuus L. · Sunflower

Syngenta Crop Protection AG, CH

FR SK UA
8 records

Codiflo

Active

Helianthus annuus L. · Sunflower

Rene Baratin

BG FR UA
8 records

Welcom

Active

Helianthus annuus L. · Sunflower

Rene Baratin

HR UA
8 records

Torino

Active

Helianthus annuus L. · Sunflower

Patrick Duhigg

RO UA
8 records

Sanay MR

Active

Helianthus annuus L. · Sunflower

SYNGENTA SEEDS A.G.

ES UA
7 records

SH 222

Active

Helianthus annuus L. · Sunflower

PACIFICO

ES PT
8 records

R1119JI

Active

Helianthus annuus L. · Sunflower

SOLTIS S.A.S

BG UA
6 records

Nallimi CL

Active

Helianthus annuus L. · Sunflower

RAGT 2N S.A.S

BG RO
6 records

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