United States Edition

Sunflower 'Red Sun'

Helianthus annuus

Red Sun is a variety of Sunflower which is a member of the Helianthus family. Its botanical name is Helianthus annuus 'Red Sun'. This variety is an Flower that typically grows as an Annual, which is defined as a plant that matures and completes its lifecycle over the course of a single year. Red Sun is known for growing to a height of approximately 1.50 metres (4.88 feet).

Red Sun Sunflower is normally quite a low maintenance plant and is normally very easy to grow - great for beginner gardeners!

This plant info is provided by the myfolia gardener's wiki. All details about Sunflower 'Red Sun' have been kindly provided by our members.

How to grow Sunflower 'Red Sun'

  • Full Sun

    +
  • High

Try to plant in a location that enjoys full sun and remember to water often. Red Sun is generally regarded as a half hardy plant, so remember to protect this plant from frosts and low temperatures. The USDA Hardiness Zones typically associated with Red Sun are Zone 4 and Zone 9. Red Sun needs a soil ph of 5.7 to 8.1 (weakly acidic soil - weakly alkaline soil).

Growing Red Sun from seed

Try to aim for a seed spacing of at least 4.68 inches (12.0 cm) and sow at a depth of around 0.49 inches (1.25 cm). For optimal germination, soil temperature should be a minimum of 13°C / 55°F.

By our calculations, you should look at sowing Red Sun about 21 days before your last frost date.

Transplanting Red Sun

Red Sun is half hardy, so ensure you wait until all danger of frost has passed in your area before considering planting outside.

Harvesting Red Sun

Sunflower 'Red Sun' information

How long does Red Sun take to grow?

These estimates for how long Sunflower 'Red Sun' takes to sprout, grow and harvest are from real observations from real gardeners, right around the world. Start logging and journaling your observations to participate!

When should I sow Red Sun?

Folia's when to plant Sunflower 'Red Sun' estimates are relative to your last frost date. Enter your frost dates and we'll calculate your sowing and planting dates for you!

Sunflower Chat

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    This group is about the joy of growing sunflowers, taking pictures of them, collecting the seeds, for eating, future ...

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