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Hemerocallis citrina can reach a height of 90–120 centimetres (35–47 in). It has bright green, linear arching leaves about 40 cm long. Flowers are lemon yellow, trumpet-shaped, showy and very fragrant, about 15 centimetres (5.9 in) in diameter.
Turnera ulmifolia grows erect, with dark toothed leaves and small, yellow-orange flowers, and is often found as a weed growing on roadsides. These yellow flowers bloom around 6:00 a.m. and wilt around 11:30 a.m. Life span for flower is around six hours. These plants can survive on minimum water and grow on walls, cement blocks, and rocks.
A yellow trout lily produces an erect flower stalk with a nodding, bisexual flower with 6 recurved, yellow, lanceolate tepals. The 20 to 33 mm long tepals are composed of 3 petals and 3 petal-like sepals. [3] E. americanum does not flower for the first 4 to 7 years of its life. [5] [6] In any given colony, only 0.5% will have flowers. [8] [3]
'Strawburst Yellow', patented as 'Stabur Yel', is a form with large bright yellow flower heads averaging around 6.3 cm (2.5 in) in diameter. The result of a planned breeding program in Gilroy, California, it was bred by Jason Jandrew of Goldsmith Seeds from a lemon yellow-flowered form crossed with a yellow-flowered form in 2005.
Tecoma stans is a semi-evergreen shrub or small tree, growing up to 10 m (30 ft) tall. [1] It features opposite odd-pinnate green leaves, with 3 to 13 serrate, 8- to 10-cm-long leaflets. The leaflets, glabrous on both sides, have a lanceolate blade 2–10 cm long and 1–4 cm wide, with a long acuminate apex and a wedge-shaped base.
Cota tinctoria is grown in gardens for its bright attractive flowers and fine lacy foliage; there is a white-flowering form. Under the synonym Anthemis tinctoria, the cultivar 'E.C. Buxton' has gained the Royal Horticultural Society's Award of Garden Merit. [7] The popular seed-raised cultivar 'Kelwayi' has 5 cm wide, yellow flowers on 65 cm ...
Flowers appear April to May at the end of each stem in a group, or umbel, of 2 to 6, occasionally only 1. The flowers are 5–13 mm (0.2–0.5 in) long, with 3 yellow petals and 3 yellow sepals spreading outwards. The flowers will open in the morning but typically wilt in the hot afternoon sun.
Lysimachia nemorum is an evergreen creeping perennial herbaceous plant growing up to about 40 cm. The bright green leaves are opposite, ovate, pointed and without teeth or hairs. The yellow flowers are about 8mm across, borne singly on long stalks in the axil of each leaf. They have five very narrow sepals, five pointed petals and five stamens.