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Centaurea dealbata
Missouri Botanical Garden — Easily grown in average, evenly moist, well-drained soils in full sun. Addition of sand to the soil helps promote good drainage. Plants prefer cool summer climates and do not perform well south of USDA Zone 7. Mature plants tolerate dryish soils. ...More…
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Centaurea cyanus--Bachelor Button
Michigan State University Extension — Height: 3 ft Spread: 2 ft Flowers: Blue, white, pink, purple, red Comments: Bachelor Buttons are reliable plants. They have Propagation: Plant seed directly into the garden since no special soil requirements and grow in full sun or partial shade. ...More…
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The invasive forb, Centaurea maculosa, increases ...
Amazon.com — Author A.S. Thorpe Author V. Archer Author T.H. DeLuca Format HTML Number Of Pages 4 Publication Date 2006-05-01More…
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Centaurea montana--Mountain Bluet, Perennial Cornflower
Old House Web — These are easy to grow plants with purple-blue, rose, or white flowers. The plant grows one and one-half feet tall and can rapidly spread to become a weed. Some support may be required to keep plants from flopping over. The plants are propagated ...More…
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CENTAUREA DISEASES
Old House Web — Downy mildew causes pale greenish or reddish, irregular spots on the upper sides of leaves. The undersides may be covered with a soft moldy growth. Young plants are especially susceptible. The disease is a bigger problem in cool damp weather. ...More…
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CENTAUREA INSECTS
Old House Web — Aphids suck plant juices and are controlled with Diazinon, Sevin, rotenone, or malathion. Aster leafhopper attacks can infect plants with aster yellows. Applications of methoxychlor, rotenone, Sevin, or Diazinon should take care of the problem. A ...More…
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Centaurea cyanus--Bachelor Button, Cornflower
Old House Web — Bachelor buttons are reliable plants producing many white, red, pink and blue flowers. They have no special soil requirements and grow in full sun or partial shade. Remove the old flowers to prolong the blooming season. Tall plants tend to sprawl ...More…
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Cornflower Perennial 25 Plants - Centaurea Dealbata
Amazon.com — Features: Centaurea dealbata Months of Bloom: Early to Late Summer Color of Bloom: Rosy-Purple Mature Height: 18-36" Size Shipped: 2 1/2" pots Package Quantity 1More…
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Cornflower Perennial 8 Plants - Centaurea Dealbata
Amazon.com — Features: Centaurea dealbata Color of Bloom: Rosy-Purple Hardy Zones 3-8 Months of Bloom: Early to Late Summer Mature Height: 18-36" Package Quantity 1More…
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Cornflower Perennial 4 Plants - Centaurea Dealbata
Amazon.com — Package Quantity 1More…
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Centaurea cyanus
Missouri Botanical Garden — Cool weather annual that is easily grown in average, medium moisture, well-drained soils in full sun to light shade. Plant stems will droop in too much shade. Plants tolerate poor soils. Avoid wet soils. New plants may be grown each year by ...More…
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Centaurea pulcherrima
Missouri Botanical Garden — Centaurea pulcherrima, sometimes called pink bachelor's button, is an erect, clump-forming perennial that features rose-pink cornflowers (to 2" diameter) with pinkish-white centers and silvery-yellow involucre bracts. Flowers appear in late ...More…