violet

Blue algerian Iris

Salah

Algerian Iris

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Honeybee on Dwarf mallow flower

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Popsicle Pink Lupine

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Centaurea montana flowering ornamental blue plant

Salah

mountain cornflower, bachelor's button, montane knapweed or mountain bluet

Salah

Centaurea montana, the perennial cornflower

Salah

Centaurea montana

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Butterfly sitting on lilac

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Blue forget-me-nots in the garden

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forget-me-nots flowers in the garden

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Blue forget-me-nots in the garden in May

Salah