Spring Flowers (1864) by Claude Monet. Original from The Cleveland Museum of Art. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/930540/spring-flowers-claude-monetFree Image from public domain licenseLilac Mariposa (Calochortus splendens) (1926) by Mary Vaux Walcott. Original from The Smithsonian. Digitally enhanced by… https://www.rawpixel.com/image/2608396/free-illustration-image-pink-flower-flowers-lilacFree Image from public domain licenseLannea coromandelica (Houtt.) Merr.: branch with leaves, flowers and fruit and sections of inflorescence, fruit and seed.… https://www.rawpixel.com/image/13962109/image-flower-plant-treeFree Image from public domain licenseComon lilac (Lilac vulgaris) from Traité des Arbres et Arbustes que l’on cultive en France en pleine terre… https://www.rawpixel.com/image/568181/common-lilac-plantFree Image from public domain licenseCalifornia Lilac (Ceanothus thyrsiflorus) (1935) by Mary Vaux Walcott. Original from The Smithsonian. Digitally enhanced by… https://www.rawpixel.com/image/2624531/free-illustration-image-lilac-blue-flowersFree Image from public domain licenseLilac (Purple and White), Marvel of Peru and Spiderwort from The Language of Flowers, or, Floral Emblems of Thoughts… https://www.rawpixel.com/image/2097657/beautiful-flower-bouquetFree Image from public domain licenseLilas (Lilac) from La Plante et ses Applications ornementales (1896) illustrated by Maurice Pillard Verneuil. Original from… https://www.rawpixel.com/image/2415252/free-illustration-image-pattern-art-nouveau-decoFree Image from public domain licenseA candytuft plant (Iberis species): flowering stem. Chromolithograph, c. 1879, after F. Hulme. https://www.rawpixel.com/image/13954750/image-flower-plant-medicineFree Image from public domain licenseOregano (Origanum vulgare) and ground ivy (Glechoma hederacea): entire flowering plants. Coloured etching by C. Pierre, c.… https://www.rawpixel.com/image/13964655/image-flower-plant-grassFree Image from public domain licenseWensbrief met bloemenkrans en een hooiwagen (1829 - 1880) by anonymous and firma Joseph Scholz https://www.rawpixel.com/image/13738551/image-paper-rose-horseFree Image from public domain licenseRhododendron (Rhododendron ponticum): flowering stem. Watercolour, ca. 1850 . https://www.rawpixel.com/image/13954888/rhododendron-rhododendron-ponticum-flowering-stem-watercolour-ca-1850Free Image from public domain licenseEarly purple orchid (Orchis mascula): flowering stem. Watercolour, 1904. https://www.rawpixel.com/image/13954424/early-purple-orchid-orchis-mascula-flowering-stem-watercolour-1904Free Image from public domain licenseAntique plant New Zealand lilac drawn by Sarah Featon (1848–1927). Original from Museum of New Zealand. Digitally… https://www.rawpixel.com/image/8784/free-illustration-image-lilac-flower-new-zealandFree Image from public domain licenseClematis (1596 - 1610) by Anselmus Boëtius de Boodt and Elias Verhulst https://www.rawpixel.com/image/13742753/clematis-1596-1610-anselmus-boetius-boodt-and-elias-verhulstFree Image from public domain licenseHawthorn (Crataegus oxycantha): flowering stem. Chromolithograph, c. 1877, after F. E. Hulme. https://www.rawpixel.com/image/13966687/image-flower-plant-artFree Image from public domain licenseRose-of-Sharon (Hibiscus syriacus): flowering stem. Watercolour, ca. 1850 . https://www.rawpixel.com/image/13963132/rose-of-sharon-hibiscus-syriacus-flowering-stem-watercolour-ca-1850Free Image from public domain licenseCat thyme (Teucrium marum L.): flowering stem with separate flower. Coloured etching by M. Bouchard, 1775. https://www.rawpixel.com/image/13959345/image-cat-flower-plantFree Image from public domain licenseA bunch of flowering lilacs (Syringa vulgaris). Lithograph by E. Champin, c. 1850, after herself. https://www.rawpixel.com/image/13956598/image-flower-plant-artFree Image from public domain licenseBluebell (Hyacinthoides non-scripta): flowering stem. Watercolour, 1903. https://www.rawpixel.com/image/13957373/bluebell-hyacinthoides-non-scripta-flowering-stem-watercolour-1903Free Image from public domain licenseSix flowering plants, all with a different type of compound inflorescence. Chromolithograph, c. 1850. https://www.rawpixel.com/image/13956917/image-paper-flower-plantFree Image from public domain licensePoison primula (Primula obconica): flowering plant. Chromolithograph, c. 1897, after H. Moon. https://www.rawpixel.com/image/13958174/image-flower-plant-moonFree Image from public domain licenseKerstkaart met een tak met bladeren en bloemen (c. 1870 - c. 1920) by anonymous and E Ridley https://www.rawpixel.com/image/13741162/image-paper-flower-frameFree Image from public domain licenseA plant, possibly a garden chrysanthemum (Dendranthema): flowering stem and seedlings. Watercolour. https://www.rawpixel.com/image/13966366/image-flower-plant-artFree Image from public domain licenseBeauitful flower bouquet. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3301521/free-photo-image-lilac-babys-breath-artFree Image from public domain licenseMarjoram (Origanum vulgare): flowering stem, rootstock and floral segments. Coloured lithograph after M. A. Burnett, c. 1847. https://www.rawpixel.com/image/13965870/image-flower-plant-medicineFree Image from public domain licenseBlad met gesprenkeld vlekkenpatroon over gegaufreerd blokkenpatroon (1900 - 1969) by anonymous https://www.rawpixel.com/image/13735976/image-background-texture-paperFree Image from public domain licenseView from deck chairs with folded towels on top of them on a sunny mountain valley. Original public domain image from… https://www.rawpixel.com/image/3300616/free-photo-image-luxury-hotel-lounge-spaFree Image from public domain licenseStilleven met bladeren en bloemen (c. 1855 - c. 1870) by anonymous https://www.rawpixel.com/image/13733735/stilleven-met-bladeren-bloemen-c-1855-1870-anonymousFree Image from public domain licenseA species of Rutaceae: branch with flowers and fruit and separate flowers, fruit and seed. Coloured line engraving. https://www.rawpixel.com/image/13952872/image-paper-flowers-plantFree Image from public domain licenseGazette du Bon Ton, 1921 - No. 10: Croquis No XVIII (1921) by anonymous, Lucien Vogel, Condé Nast Publisher, Naville et Cie… https://www.rawpixel.com/image/13738305/image-paper-cartoon-flowerFree Image from public domain licenseTwo flowering plants: sage (Salvia officinalis) and meadow sage (Salvia pratensis). Coloured etching by C. Pierre, c. 1865… https://www.rawpixel.com/image/13958592/image-flower-plant-medicineFree Image from public domain licenseMuurbloem (Erysimum cheiri) (1790 - 1799) by Jan Anton Garemyn https://www.rawpixel.com/image/13742823/muurbloem-erysimum-cheiri-1790-1799-jan-anton-garemynFree Image from public domain licenseEnglish ivy (Hedera helix): stem with flowers, fruit and leaves. Coloured lithograph by W. G. Smith, c. 1863, after himself. https://www.rawpixel.com/image/13954617/image-paper-flower-plantFree Image from public domain licenseZwarte nieswortel (Veratrum nigrum) (1596 - 1610) by Anselmus Boëtius de Boodt and Elias Verhulst https://www.rawpixel.com/image/13741672/image-paper-flower-plantFree Image from public domain licenseThe natural history of Carolina, Florida and the Bahama Islands: containing the figures of birds, beasts, fishes, serpents… https://www.rawpixel.com/image/13955624/image-flower-plant-medicineFree Image from public domain licenseA mint plant (Mentha viridis): flowering stem, leaf and floral segments. Coloured engraving after J. Sowerby, 1812. https://www.rawpixel.com/image/13968804/image-flower-plant-grassFree Image from public domain licenseA white house with black trimming and pretty flowers out front. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3301594/free-photo-image-arbour-blossom-bonsaiFree Image from public domain licenseTwo vases full of lilac flowers on a table near a windowsill. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3301783/free-photo-image-flower-vase-art-blossomFree Image from public domain licenseFour British wild flowers with fruit; dewberry, two brambles and cloudberry . Coloured lithograph, c. 1856, after H.… https://www.rawpixel.com/image/13964097/image-flower-plant-artFree Image from public domain licensePink lilac, Lupburg in Bavaria. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3372357/free-photo-image-andrena-animal-beeFree Image from public domain licenseA flowering apple tree branch. Coloured lithograph, c. 1850, after Guenébeaud. https://www.rawpixel.com/image/13958429/flowering-apple-tree-branch-coloured-lithograph-1850-after-guenebeaudFree Image from public domain licenseBlue hydrangea and pink lilac in white vase. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3293701/free-photo-image-floral-bouquet-lilac-flower-artFree Image from public domain licenseDistel (Carduus) (1596 - 1610) by Anselmus Boëtius de Boodt and Elias Verhulst https://www.rawpixel.com/image/13741993/distel-carduus-1596-1610-anselmus-boetius-boodt-and-elias-verhulstFree Image from public domain licenseBlad met banenpatroon van lijnen en stippen (c. 1850 - c. 1950) by anonymous https://www.rawpixel.com/image/13733255/blad-met-banenpatroon-van-lijnen-stippen-c-1850-1950-anonymousFree Image from public domain licenseBloeiende Corydalis bulbosa (1831 - 1900) by Jan Jacob Goteling Vinnis https://www.rawpixel.com/image/13740627/bloeiende-corydalis-bulbosa-1831-1900-jan-jacob-goteling-vinnisFree Image from public domain licenseSurinam quassia wood (Quassia amara): flowering stem and leaf. Coloured zincograph, c. 1853, after M. Burnett. https://www.rawpixel.com/image/13956081/image-paper-flower-plantFree Image from public domain licenseSeven garden plants: flowering stems and floral segments. Coloured etching, c. 1834. https://www.rawpixel.com/image/13966743/image-paper-flower-plantFree Image from public domain licenseBranch with thick white blossom with clear sky background in Spring. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3302189/free-photo-image-art-bloom-blossomFree Image from public domain licenseMacro of floral lilac flower in full bloom in Spring, Brookline. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3302113/free-photo-image-lilac-flowers-bloom-blossomFree Image from public domain licenseFireweed_Payette NF_Kelly MartinFireweed in mid-summer, Payette National Forest, Idaho. USDA Forest Service photo by Kelly… https://www.rawpixel.com/image/11071856/photo-image-flower-plant-grassFree Image from public domain licenseA plant (Metrodorea nigra): flowering stem and leaves. Coloured zincograph by C. Rosenberg, c. 1850, after himself. https://www.rawpixel.com/image/13970388/image-flower-plant-grassFree Image from public domain licenseCherry (Prunus species): branch with flowers. Colour aquatint by F. Corsi, 1830, after D. del Pino. https://www.rawpixel.com/image/13952853/image-paper-flower-plantFree Image from public domain licenseA plant (Diplusodon floribundus): flowering stem and floral segments. Coloured lithograph. https://www.rawpixel.com/image/13956721/image-flower-plant-medicineFree Image from public domain licenseJusticia martinicensis Jacq.: flowering stem. Coloured engraving after F. von Scheidl, 1776. https://www.rawpixel.com/image/13964080/image-flower-plant-grassFree Image from public domain licenseSmall green houseplant on a decorative tablecloth. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3301158/free-photo-image-grape-leaf-blossom-blueberryFree Image from public domain licenseRood peperboompje op een grondje (c. 1700 - c. 1800) by familie Van der Vinne https://www.rawpixel.com/image/13738335/rood-peperboompje-een-grondje-c-1700-1800-familie-van-der-vinneFree Image from public domain licenseBloeiende Corydalis bulbosa (1831 - 1900) by Jan Jacob Goteling Vinnis https://www.rawpixel.com/image/13740626/bloeiende-corydalis-bulbosa-1831-1900-jan-jacob-goteling-vinnisFree Image from public domain licenseTook these pics on some walks around my hometown Lupburg in Bavaria. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3372206/free-photo-image-blossom-cc0-creative-commonsFree Image from public domain licenseThis image was uploaded as part of Wiki Loves e-textbooks contest in Poland. Original public domain image from Wikimedia… https://www.rawpixel.com/image/3337745/free-photo-image-acanthaceae-agelaius-animalFree Image from public domain licenseDe rozewitte hyacint Staaten Generaal (1734) by Abraham Hendrik van Beesten https://www.rawpixel.com/image/13737825/rozewitte-hyacint-staaten-generaal-1734-abraham-hendrik-van-beestenFree Image from public domain licenseWhite blossom plant with big green leaves in sunshine in Spring. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3303581/free-photo-image-cherry-animal-bloomFree Image from public domain licenseQuinine plant from medicinal plants by Robert Bentley, 1880. https://www.rawpixel.com/image/13965859/quinine-plant-from-medicinal-plants-robert-bentley-1880Free Image from public domain licenseThe Bureau of Land Management photo. Original public domain image from Flickr https://www.rawpixel.com/image/3398163/free-photo-image-allium-amaryllidaceae-animalsFree Image from public domain licenseRidderspoor (Delphinium) en klokje (Campanula) (1596 - 1610) by Anselmus Boëtius de Boodt and Elias Verhulst https://www.rawpixel.com/image/13742446/image-paper-flower-frameFree Image from public domain licenseSeven British garden plants, including a fig: flowering stems and floral segments. Coloured etching, c. 1833. https://www.rawpixel.com/image/13960006/image-flower-plant-medicineFree Image from public domain license