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  2. Centaurea cyanus - Wikipedia

    en.wikipedia.org/wiki/Centaurea_cyanus

    The leaves are lanceolate and 3–10 cm (1–4 in) long. [4] The flowers are most commonly an intense blue colour and arranged in flowerheads (capitula) of 1.5–3 cm diameter, with a ring of a few large, spreading ray florets surrounding a central cluster of disc florets. The blue pigment is protocyanin, which in roses is red. [5]

  3. Ceratostigma plumbaginoides - Wikipedia

    en.wikipedia.org/wiki/Ceratostigma_plumbaginoides

    Growing to 50 cm (20 in) tall and broad, it is a mat-forming herbaceous perennial with small ovoid leaves and bright blue flowers in late summer and early autumn. The leaves may turn red or purple before falling.

  4. Ipomoea tricolor - Wikipedia

    en.wikipedia.org/wiki/Ipomoea_tricolor

    It is an herbaceous annual or perennial twining liana growing to 2–4 m (7–13 ft) tall. The leaves are spirally arranged, 3–7 cm (1–3 in) long with a 1.5–6 cm (1 ⁄ 2 – 2 + 1 ⁄ 2 in) long petiole. The flowers are trumpet-shaped, 4–9 cm (2–4 in) in diameter, most commonly blue with a white to golden yellow centre.

  5. How to Grow Sea Holly, the Striking Perennial That's Almost ...

    www.aol.com/lifestyle/grow-sea-holly-striking...

    It has thick, spiky leaves and steel blue or white flowers that resemble thistle plants. The plant gets its name because the foliage resembles holly leaves, while it thrives in coastal areas or in ...

  6. Bring a Pop of Color to Your Garden With These Annual Flowers

    www.aol.com/lifestyle/bring-pop-color-garden...

    Sweet Alyssum. This sweetly-scented low-growing annual comes in pink, purple and white. It’s beautiful cascading from pots, window boxes, and hanging baskets, and pollinators love it!It will ...

  7. Ageratum - Wikipedia

    en.wikipedia.org/wiki/Ageratum

    Ageratum (/ ə ˈ dʒ ɛr ə t ə m /) [2] (whiteweed in the US) is a genus of 40 [3] to 60 tropical and warm temperate flowering annuals and perennials from the family Asteraceae, tribe Eupatorieae. Most species are native to Central America and Mexico but four are native to the United States. [3] They form tussocks or small hills.

  8. Ageratum houstonianum - Wikipedia

    en.wikipedia.org/wiki/Ageratum_houstonianum

    This herbaceous annual or dwarf shrub grows to 0.3–1 m (1 ft 0 in – 3 ft 3 in) high, with ovate to triangular leaves 2–7 cm (0.79–2.76 in) long, and blue flowerheads (sometimes white, pink, or purple). The flower heads are borne in dense corymbs. The ray flowers are threadlike and fluff-haired, leading to the common name.

  9. Ipomoea indica - Wikipedia

    en.wikipedia.org/wiki/Ipomoea_indica

    Ipomoea indica [3] is a species of flowering plant in the family Convolvulaceae, known by several common names, including blue morning glory, oceanblue morning glory, koali awa, and blue dawn flower. It bears heart-shaped or three-lobed leaves and purple or blue funnel-shaped flowers 6–8 cm (2–3 in) in diameter, from spring to autumn .