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blue boy seeds

Blue boy seeds

Difficulty
Very easy

Latin
Centaurea cyanus
Family: Asteraceae

Quick Facts:

Season & Zone
Exposure: Full sun

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

Sowing Indoors:
Sow in pots or trays of moist seed compost and cover with a very fine sprinkling of compost or vermiculite. After sowing, do not exclude light as this helps germination. Keep at 15-20°C (59-68°F). Keep the surface of the compost moist but not waterlogged. Germination will usually take 14-21 days.
When they are large enough to handle, transplant the seedlings into 7cm (3in) pots or trays. Overwinter plants in cool, light, frost-free conditions before planting out the following spring, or grow on as greenhouse pot plants.

Sowing Direct :
Sow thinly, 3mm (1/8in) deep in drills 30cm (12in) apart in well-cultivated soil which has been raked to a fine tilth. Water ground regularly, especially in dry periods.
When large enough to handle, thin out seedlings to 15cm (6in) apart

Cultivation:
This fully hardy plant requires a sunny site, growing in most well-drained soil types, even poor soil. Do not over fertilise because this will lead to excessive leaf growth at the expense of blossoms. Cornflowers bloom more when crowded.
The wiry plants may need some discreet support, and deadheading helps to prolong the flowering season.

Plant Uses:
Flowers Borders and Beds, Patio/Container Plants, Cut Flower, Attracts Butterflies, Drought Tolerant, Everlasting (use for drying and pressing, Cornflowers retain their colours when dried)

Other Uses:
Cornflowers are prized historically for their blue pigment. Cornflowers are often used as an ingredient in tea and is famous in the Lady Grey blend of Twinings.

Blue boy seeds

Thinning: When 1″–2″ tall, thin to 1 every 8″–10″

5 out of 5 stars Sep 29, 2021

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When to Sow Outside: RECOMMENDED. 1 to 2 weeks before your average last frost date, or in late summer/fall for blooms the following season. Mild Climates: Sow in fall for winter bloom.

Blue Boy Bachelor Buttons

5 out of 5 stars Jul 19, 2021