Gardenia jasminoides, [gardenia, cape jasmine] is an evergreen flowering plant of the family Rubiaceae. It originated in Asia and is most commonly found growing wild in Vietnam, Southern China, Taiwan, Japan, Myanmar and India.
With its shiny green leaves and heavily fragrant white summer flowers, it is widely used in gardens in warm temperate and subtropical climates, and as a houseplant in temperate regions. It has been in cultivation in China for at least a thousand years, and was introduced to English gardens in the mid 18th century.
Photos: Atlanta, GA, USA 
Hydrangea arborescens, commonly known as smooth hydrangea, wild hydrangea, or sevenbark, is a species of flowering plant in the family Hydrangeaceae. It is a small to medium-sized, deciduous shrub up to 3 m (10 ft) tall that is native to the eastern United States.
Smooth hydrangea is widely distributed across the eastern United States – from southern New York to the panhandle of Florida, west to eastern Oklahoma and southeastern Kansas. It is mainly found in moist soils under a hardwood forest canopy and is often common along woodland road banks and streams. It is common in the Delaware River Valley and in the Appalachian Mountains.
Photos: Zoo Atlanta, Georgia, USA 
More photos: Camellias, Winter Blooming Shrubs
Camellia is a genus of flowering plants in the family Theaceae. They are found in eastern and southern Asia, from the Himalayas east to Japan and Indonesia. There are 100–250 described species, with some controversy over the exact number.
This genus is famous throughout East Asia; camellias are known as cháhuā (茶花) in Chinese, “tea flower”, an apt designation, as tsubaki (椿) in Japanese.
Today camellias are grown as ornamental plants for their flowers; about 3,000 cultivars and hybrids have been selected, many with double or semi-double flowers. Camellia japonica is the most prominent species in cultivation, with over 2,000 named cultivars. Next are Camellia reticulata with over 400 named cultivars, and Camellia sasanqua with over 300 named cultivars. Some varieties can grow to a considerable size, up to 100m², though more compact cultivars are available.
There is great variety of flower forms:
- single (flat, bowl- or cup-shaped)
- semi-double (rows of large outer petals, with the centre comprising mixed petals and stamens)
- double – paeony form (convex mass of irregular petals and petaloids with hidden stamens) – anemone form (one or more rows of outer petals, with mixed petaloids and stamens in the centre) – rose form (overlapping petals showing stamens in a concave centre when open) – formal double (rows of overlapping petals with hidden stamens)
Photos: Gardens by the Bay, Singapore 
Brownea coccinea is a species in the subfamily Caesalpinioideae of the family Fabaceae. Common names include Scarlet Flame Bean, Mountain Rose, Rose of Venezuela and Cooper Hoop. The species is native to Guyana, Venezuela, Brazil, Trinidad and Tobago.
Brownea is a genus of about 30 species in the family Fabaceae, subfamily Caesalpinioideae. The species are shrubs and trees growing to 20 m tall.
Photo: SBG, Singapore 
Pyracantha coccinea is the European species of Firethorn that has been cultivated in gardens since the late 16th century. The tree has small white flowers. It produces small, bright red berries. The fruit is bitter and astringent, making it inedible when raw. The fruit can be cooked to make jellies, jams, sauces and marmalade. It ranges from southern Europe to western Asia. It has been introduced to North America and cultivated there as an ornamental plant since the 18th century.
Photo: Hendersonville, NC, USA, 
Leptospermum scoparium, commonly called mānuka, manuka myrtle, New Zealand teatree, broom teatree, or just tea tree, is a species of flowering plant in the myrtle family Myrtaceae, native to New Zealand and southeast Australia.
It is a prolific scrub-type tree and is often one of the first species to regenerate on cleared land. It is typically a shrub growing to 2–5 m [7–16 ft] tall, but can grow into a moderately sized tree, up to 15 m [49 ft] or so in height. It is evergreen, with dense branching and small leaves. The flowers are white, occasionally pink with five petals. The wood is tough and hard.
Photos: Flower Dome, Gardens by the Bay, Singapore 
Juniperus taxifolia [Bonin Islands Juniper] is a species of juniper, endemic to the Bonin Islands southeast of Japan.
It is an evergreen coniferous shrub growing to a height of 1-3 m [rarely a small tree to 13 m tall]. The leaves are needle-like, in whorls of three, light green, 7-14 mm long and 1-1.5 mm broad, with a double white stomatal band [split by a green midrib] on the inner surface. It is dioecious, with separate male and female plants. The seed cones are berry-like, green ripening in 18 months to reddish-brown with a variable light waxy coating; they are spherical, 8-10 mm diameter, and have six or nine fused scales in two or three whorls of three; the three larger scales each with a single seed. The seeds are dispersed when birds eat the cones, digesting the fleshy scales and passing the hard seeds in their droppings.
Some authors include Juniperus lutchuensis from the Ryukyu Islands in Juniperus taxifolia as a synonym, or variety.
Photos: Gardens by the Bay, Singapore