Feverfew — Feverfew (Tanacetum parthenium; syn. Chrysantheim parthenium (L.) Pers., Pyrethrum parthenium Sm.) is a traditional medicinal herb which is found in many old gardens, and is also occasionally grown for ornament; which are then used in Christmas trees. the plant grows into a small bush up to around 18 inches high, with citrus-scented leaves and is covered by flowers …

Evening Primrose — Oenothera is a genus of about 125 species of annual, biennial and perennial herbaceous flowering plants, native to North and South America. It is the type genus of the family Onagraceae. Common names include evening primrose, suncups, and sundrops. The species vary in size from small alpine plants 10 cm tall (e.g. O. acaulis from Chile), to …

Dutchman’s-Pipe — Aristolochia is a large plant genus with over 500 species. Collectively known as birthworts, pipevines or Dutchman’s pipes, they are the namesake of the family (Aristolochiaceae). They are widespread and occur in the most diverse climates, but they are not native to Australia. Some species, like A. utriformis and A. westlandii, are threatened with extinction. This is a …

Dogbane — Apocynum is a genus with about seven species, commonly known as Dogbane and Indian Hemp. The genus occurs throughout most of the temperate Northern Hemisphere, except for being absent from western Europe. Apocynum species are used as food plants by the larvae of some Lepidoptera species including Mouse Moth. Dogbane, Apocynum, or Indian hemp, is an herb of …

Dieffenbachia — Dieffenbachia is a genus of tropical plants in the Family Araceae noted for their patterned leaves. Members of this genus are popular as houseplants because of their tolerance to shade. The Dieffenbachia is often referred to as the “King of Plants”. The cells of the Dieffenbachia plant contain needle-shaped calcium oxalate crystals called raphides. If a leaf is …

Deutzia — Deutzia is a genus of about 60 species of shrubs in the family Hydrangeaceae, native to eastern and central Asia (from the Himalaya east to Japan and the Philippines), and Central America and also Europe. By far the highest species diversity is in China, where 50 species occur. The species are shrubs ranging from 1-4 m in height. …

Delphinium — Delphinium is a genus of about 250 species of annual, biennial or perennial flowering plants in the buttercup family Ranunculaceae, native throughout the Northern Hemisphere and also on the high mountains of tropical Africa. The common name, shared with the closely related genus Consolida, is Larkspur. The leaves are deeply lobed with 3-7 toothed, pointed lobes. The main …

Day Lily — Daylilies comprise the small genus Hemerocallis of flowering plants in the family Hemerocallidaceae. They are not true lilies which are Lilium in Liliaceae. The flowers of most species open at sunrise and wither at sunset, possibly replaced by another one on the same stem the next day. Some species are night-blooming. Daylilies are not commonly used as …

Dahlia — Dahlia is a genus of bushy, tuberous, perennial plants native to Mexico, Central America, and Colombia. There at least 36 species of Dahlia. Dahlia hybrids are commonly grown as garden plants. The Aztecs gathered and cultivated the dahlia for food, ceremony, as well as decorative purposes , and the long woody stem of one variety was used for …

Daffodil — Narcissus is the botanic name for a genus of mainly hardy, mostly spring-flowering, bulbs in the Amaryllis family native to Europe, North Africa, and Asia. There are also several Narcissus species that bloom in the autumn. Though Hortus Third cites 26 wild species, Daffodils for North American Gardens cites between 50 and 100 excluding species variants and wild …