United States Edition

Cornflower 'Blue Boy'     

Centaurea cyanus

'Blue Boy' is a Cornflower variety in the Centaurea genus with a scientific name of Centaurea cyanus. Blue Boy is a (open pollinated) variety. Blooms appear in these approximate colours:   Medium purple and   Cerulean blue and   Pigment blue. The mature flowers are of a Double form. Leaves appear approximately as a   Dollar bill colour.

Grown for its fragrant, doubled flowers, which are very attractive to bees. It will naturalize if you allow it to drop seeds.

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. Blue Boy normally grows to a mature height of 90.0 cm (that's 2.93 feet imperial). This variety tends to bloom in late spring.

Blue Boy Cornflower 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 Cornflower 'Blue Boy' have been kindly provided by our members.

How to grow Cornflower 'Blue Boy'

  • Partial Sun

    +
  • Medium

Try to plant in a location that enjoys partial sun and remember to water moderately. Keep in mind when planting that Blue Boy is thought of as half hardy, so it will require protection in frosts and low temperatures. Use USDA Hardiness Zone 6 - 11 as your guideline for the appropriate climate for this plant.

Growing Blue Boy from seed

Sow at a depth of approx. 0.23 inches (0.6 cm) and aim for a distance of at least 0.98 inches (2.5 cm) between Cornflower plants.

By our calculations, you should look at sowing Blue Boy about 7 days after your last frost date.

Transplanting Blue Boy

Ensure that temperatures are mild (minimum night temperatures should be around 16°C / 61°F) and all chance of frost has passed before planting out, as Blue Boy is a half hardy plant.

Harvesting Blue Boy

Cornflower 'Blue Boy' information

How long does Blue Boy take to grow?

These estimates for how long Cornflower 'Blue Boy' 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 Blue Boy?

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

Blue Boy Cornflower Tags

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