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Asteraceae

sunflower

Sunflower Giant (Helianthus annuus)

Sunflower Giant is a sunflower variety for gardeners who want a clearly documented crop. It is especially notable for this feature: Spectacular giant plant, 2 meters tall or more. The confirmed botanical name, Helianthus annuus, supports accurate identification. The recommended exposure is full sun. Direct sowing after any risk of frost or indoor sowing 3 weeks before. Sow 2 cm deep. Allow 2 cm between plants. Maturity is expected after about 100 days. Its growth habit and flowers contribute to an appealing garden display. These sunflower seeds suit garden projects in Quebec and across Canada. Store the packet in a dry place until sowing and adjust care to local weather.

Quantity: ±25 seeds
Exposure: Full sun
Life cycle: Annual

Common namesunflower

FamilyAsteraceae

GenusHelianthus

Speciesannuus

CultivarGéant

Botanical nameHelianthus annuus

Sunflower Giant Helianthus annuus Sunflower Giant is a sunflower variety offered as seed for gardens in Quebec and across Canada. This variety is especially notable for the following characteristic: Spectacular giant plant, 2 meters tall or more. Its confirmed botanical name is Helianthus annuus, which helps gardeners identify the plant accurately. The stated time to maturity is 100 days under favourable growing conditions. The producer lists a mature height of 2 m. Suitable spacing promotes air movement around the foliage. This plant prefers full sun. Full sun, rich and well drained soil.

The confirmed sowing depth is 2 cm. The producer recommends 2 cm between plants. Stable warmth generally encourages more even emergence. Germination time can vary with substrate moisture and temperature. For best results, keep the growing medium lightly moist during germination without saturating it. Once plants are established, water as needed while considering rainfall, drainage, and heat. Regular observation of the foliage makes it easier to adjust watering and care promptly. A light mulch can moderate moisture swings after plants are well established. Avoid persistent waterlogging, which reduces oxygen around the roots.

You can grow this variety beside plants with similar light and soil requirements. Viewing flowers at the right stage highlights the ornamental qualities of this variety. This variety fits naturally into an ornamental planting suited to its growth habit. These sunflower seeds offer a clearly presented option for planning a garden project suited to the season. Store the packet in a dry place and use the product-specific details to plan sowing. Gradual hardening off is recommended before outdoor planting when seedlings were started indoors. Watch young plants closely during windy, very hot, or unusually wet periods.

Sowing guide

It all startswith a seed.

Sowing depth

2 cm

Spacing / density

2 cm

Sowing period

Direct sowing after any risk of frost or indoor sowing 3 weeks before.

Propagation

Seed propagation

Growing method

Direct sowing after any risk of frost or indoor sowing 3 weeks before. Sow 2 cm deep. Allow 2 cm between plants. Stable warmth encourages more even emergence. Emergence time varies with warmth and substrate moisture. The recommended exposure is full sun. Full sun, rich and well drained soil. Keep the growing medium lightly moist during germination without leaving it waterlogged. After emergence, provide enough light to encourage compact, steady growth. Thin seedlings when needed so each plant has air, light, and root space. If sowing starts indoors, harden plants off gradually before outdoor planting. Water at soil level when the surface begins to dry, taking rainfall and heat into account. A light mulch can moderate moisture swings after plants are established. Check foliage regularly and remove only damaged growth. Maturity is expected after about 100 days. Enjoy the flowers when their colour and form are fully expressed. Results naturally vary with microclimate, sowing date, and consistency of care. Plant needs naturally change as growth progresses. This simple habit also supports consistent care. Steady care remains helpful throughout the season. Regular observation supports balanced plant growth. Consistent attention encourages the best results.

Soil and care

The right care,at the right time.

Watering

During germination, keep the growing medium evenly moist without saturating it. After establishment, water when the soil surface begins to dry. Direct water to the root zone instead of wetting the foliage. Deep, less frequent watering generally encourages better rooting than repeated shallow applications. Reduce frequency after substantial rain and increase it during very hot or windy periods. Check containers more often because potting mix dries faster.

Soil type

Full sun, rich and well drained soil. A loose texture helps roots explore the soil and allows excess water to drain. Add mature compost when needed without making the soil overly rich or compact. Avoid locations where water remains on the surface after rain. Mulch applied after establishment can protect soil structure and reduce evaporation. In containers, use a quality potting mix with effective drainage.

Fertilization

Mature compost incorporated before planting provides a balanced foundation for growth. Use a fertilizer suited to this crop only when plant vigour or soil fertility justifies it. Follow the product label to avoid excessive salts and unbalanced growth. Container-grown plants may need more regular feeding because nutrients are depleted more quickly. Water after application when the fertilizer label recommends it. Observe foliage colour and vigour before adjusting feeding frequency.

Moisture

Consistent moisture without saturation

Seasonal care

At sowing time, prepare a clean, loose, lightly moist growing medium. Sow 2 cm deep. Stable warmth encourages more even emergence. Emergence time varies with warmth and substrate moisture. After emergence, place seedlings under suitable light and check moisture daily. Thin crowded seedlings to reduce competition and improve airflow. Before outdoor planting, harden plants off gradually to sun, wind, and temperature changes. The recommended exposure is full sun. Full sun, rich and well drained soil. Allow 2 cm between plants. During growth, water at soil level according to the weather and remove only truly damaged leaves. A light mulch reduces evaporation and splashing after the soil warms. Watch buds develop and enjoy flowering without letting the soil dry completely. Maturity is expected after about 100 days. Remove spent flowers only when it suits the variety and the desired display. At season’s end, remove diseased residue and compost only healthy material. Clean containers and store remaining seeds in a cool, dry place. Care spread throughout the season supports attentive cultivation without unnecessary interventions. This simple habit also supports consistent care. Steady care remains helpful throughout the season. Regular observation supports balanced plant growth. Consistent attention encourages the best results. Local weather may still shift the schedule slightly. Each observation helps adjust care at the right time. Well-drained soil remains essential for healthy roots.

Bloom and dimensions

Its place,in your garden.

Mature height

2 m

Bloom period

Flowering time for Sunflower Giant depends on sowing date, warmth, and available light. The recommended exposure is full sun. Well-drained soil and even moisture support bud formation. Avoid excessive nitrogen, which may encourage foliage at the expense of flowers. Remove spent flowers only when this practice suits the variety and desired effect. Flowering periods can vary slightly with microclimate and seasonal conditions.

Days to maturity

100 days

Harvest

Pour le tournesol, l’intérêt au jardin concerne les graines alimentaires ou la présence d’oiseaux. Suivez le stade correspondant à cet usage plutôt que de traiter toutes les parties de la plante comme une récolte alimentaire. Une tige coupée pour un bouquet et une capsule laissée pour ses graines ne se gèrent pas au même moment. Les parties comestibles, lorsqu’elles sont confirmées, doivent être identifiées séparément.

Garden associations

In goodcompany.

Companion plants

Auprès de Tournesol 'Géant', privilégiez des plantes dont la hauteur ne masque pas la lumière nécessaire à la culture. Gardez la zone racinaire et les accès dégagés: les besoins d’espace et d’eau priment sur une simple liste de compagnons. La proximité ne constitue pas une protection prouvée contre les maladies ou les insectes. Organisez les rangées ou les touffes pour pouvoir arroser, observer les feuilles et retirer une plante abîmée sans endommager les voisines. Ces semences de tournesol rejoignent un projet de jardin choisi pour le port et les usages de Tournesol 'Géant'.

Frequently asked questions

Your questions,answered.

When should Sunflower Giant be sown?

Direct sowing after any risk of frost or indoor sowing 3 weeks before. Sow 2 cm deep. Stable warmth encourages more even emergence. Emergence time varies with warmth and substrate moisture. Keep the growing medium lightly moist until emergence without waterlogging it. If sowing starts indoors, give seedlings ample light and harden them off before outdoor planting. The exact date should reflect the last frost, soil temperature, and conditions at your site. Label the sowing with the variety name and date to track germination accurately. Consistent attention encourages the best results. Local weather may still shift the schedule slightly. Each observation helps adjust care at the right time.

Which exposure suits Sunflower Giant?

The recommended exposure is full sun. Place Sunflower Giant where this amount of light remains available through most of the growing period. A site that is too dark may stretch seedlings and slow development. In a very hot location, check soil moisture more frequently. Rotate containers when needed for more even exposure. Also consider shade cast by buildings and taller plants as the season progresses. Good airflow complements an appropriate light exposure. Local weather may still shift the schedule slightly. Each observation helps adjust care at the right time. Well-drained soil remains essential for healthy roots. Plant needs naturally change as growth progresses.

How should Sunflower Giant be watered?

During germination, keep the growing medium evenly moist without saturating it. After Sunflower Giant is established, water when the soil surface begins to dry. Direct water toward the root zone instead of wetting foliage. Water more often during very hot or windy periods and reduce applications after substantial rain. In containers, check moisture daily when needed because potting mix dries faster. Always allow excess water to drain. Light mulch can help stabilize moisture after plants become established. Each observation helps adjust care at the right time. Well-drained soil remains essential for healthy roots. Plant needs naturally change as growth progresses.

Can Sunflower Giant be grown in a container?

Sunflower Giant can be grown in a container when pot size matches the plant’s expected development. Choose a stable container with drainage holes and fill it with quality potting mix. The recommended exposure is full sun. Check moisture more often than in the ground, especially in hot weather. Water slowly, then allow excess water to drain completely. A suitable fertilizer may help as potting-mix reserves decline. Provide support if the plant’s growth habit or crop load requires it. A sufficiently large pot reduces rapid moisture swings and supports steadier rooting. Well-drained soil remains essential for healthy roots. Plant needs naturally change as growth progresses.

When is the best time to enjoy Sunflower Giant?

The most ornamental period depends on sowing date and the start of flowering. Enjoy the plant when its habit and flowers fully express the variety’s characteristics. The length of ornamental interest varies with heat, watering, and care. Observe the plant rather than relying only on the calendar because weather can advance or delay development. Discard damaged portions and keep only healthy harvests or flowers. Record important dates to plan the crop more accurately next season. Consistent care supports more even growth and better overall quality. Plant needs naturally change as growth progresses. This simple habit also supports consistent care. Steady care remains helpful throughout the season.

Wildlife and pets

Life,around your plants.

Attracts birds

Yes

Supporting wildlife

Sunflower Giant can provide resources for visiting insects while it is in flower. Its value varies with flower shape, flowering period, and species present nearby. Avoid insecticide treatments during flowering to protect beneficial visitors. Combine several successive flowering periods to extend nectar and pollen availability. A shallow water source and varied plant shelter further support small garden wildlife.