Tall Mixed Cornflowers

Tall Mixed Cornflowers

SKU: FL2188
A mix of purple, blue, pink, and white papery blossoms bring summer colour to the garden. They are an excellent cut flower and they dry well, looking fresh for ages. Cornflowers are highly attractive to pollinators and beneficial insects like Syrphid flies. Read More

Exposure Full-sun

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More details about Tall Mixed Cornflowers

Centaurea cyanus. A mix of purple, blue, pink, and white papery blossoms bring summer colour to the garden. Try planting some Tall Mixed Cornflowers in a big clump at the edge of the yard for stunning summer colour. They are an excellent cut flower and they dry well, looking fresh for ages. Cornflowers are highly attractive to pollinators and beneficial insects like Syrphid flies. The flowers are edible, and the plants are drought resistant for xeriscaping. Deadhead spent flowers to prolong the bloom period, and to keep plants looking tidy. Tall Mixed Cornflowers seeds are easy to save from year to year.

Annual.

Quick Facts:

    • Hardy annual
    • Purple, blue, pink and white
    • Attracts beneficial insects
    • Excellent cut flower
    • Dries well, looking fresh for ages

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Tall Mixed Cornflowers

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All About Tall Mixed Cornflowers

Latin

Latin
Centaurea cyanus
Family: Asteraceae

Difficulty

Difficulty
Very easy

Season & Zone

Season & Zone
Exposure: Full sun

Timing

Timing
Direct sow starting just before last frost, and again every two weeks until end of spring. Centaurea can be direct sown in autumn as well. Starting indoors is not necessary, but can be accomplished by keeping seed trays in the dark at the optimal soil temperature of 15-21°C (60-70°F). Move under bright lights once germination occurs, and transplant out in late spring, after all risk of frost has passed.

Starting

Starting
Just cover the small seeds. Thin or space to 15-30cm (6-12″) apart.

Growing

Growing
We acknowledge that Centaurea cyanus sometimes appears on lists of invasive species. In our experience, for the back yard or balcony gardener, this is not an issue, and the plants are easily controlled. They are short rooted, and can be pulled up with little effort. Unlike some plants, its seeds simply drop locally if allowed to mature, and do not eject, and they do not spread by underground rhizome. We respectfully ask that gardeners who live in threatened or sensitive ecosystems take this into consideration when planting Centaurea, just like any other type of seed.

How to Grow Cornflowers

Step 1: Timing

Direct sow starting just before last frost, and again every two weeks until end of spring. Centaurea can be direct sown in autumn as well. Starting indoors is not necessary, but can be accomplished by keeping seed trays in the dark at the optimal soil temperature of 15-21°C (60-70°F). Move under bright lights once germination occurs, and transplant out in late spring, after all risk of frost has passed.

Step 2: Starting

Just cover the small seeds. Thin or space to 15-30cm (6-12″) apart.

Step 3: Growing

We acknowledge that Centaurea cyanus sometimes appears on lists of invasive species. In our experience, for the back yard or balcony gardener, this is not an issue, and the plants are easily controlled. They are short rooted, and can be pulled up with little effort. Unlike some plants, its seeds simply drop locally if allowed to mature, and do not eject, and they do not spread by underground rhizome. We respectfully ask that gardeners who live in threatened or sensitive ecosystems take this into consideration when planting Centaurea, just like any other type of seed.

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