Plants by Common Name

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Plants by Scientific Name

Horse Chestnut (Aesculus hippocastanum)

Horse Chestnut


This tree grows up to 120 feet with a domed crown of branches and leaves. The leaves are very large and are composed of 5-7 leaflets, each of which is up to 4 inches long. The flowers are small with a small red spot. The fruit have a green spiky capsule that contains one nut like seed called a horse-chestnut.



Hyacinth (Hyacinth orientalis)



Hyacinth is one of all the early spring blooming flowers most favored by home gardeners. It is a bulbous herb of the lily family with its origin in the Mediterranean region and cultivated in many color varieties. Green leaves, 7-8 per bulb, all arising from the ground level, are fleshy, glossy, narrow with smooth margins, 4-12 inches long and about 3/4 inches wide without marginal teeth. Flowers, borne in a dense raceme on a 6-8 inch long stem, are bell-shaped, and eventually open into 6 reflexed tepals. The flower is most well known for its fragrance. Fruits are globose and have 3 divisions. The bulb is 1-1/2 to 2 inches in diameter, light purple or cream colored, and covered with dry skin-like layers.



Hydrangea (Hydrangea spp.)



The cultivated species, Hydrangea macrophylla Ser. (= H. hortensis), is a deciduous shrub which can reach to nearly 6 feet. The common cultivated species is grown widely in gardens and as potted plants. The flowers among the cultivated species include white, pink, mauve, bluish purple, to blue. The forms of the flower clusters and the leaves of the cultivated species are similar to those of the cold-hardy wild species (H. arborescens L.). Wild hydrangeas, H. quercifolia Bartr. and H. arborescens L. , are shrubs which reach 3.5 to 10 feet in height. The stems are light green when new, turning light brown and woody with time. Leaves are alternate, 4-10 inches in length, dark green above, lighter or pale green on the underside. The leaves of H. quercifolia Bartr. are deeply lobed, while those of the other species (H. arborescens L.) are broadly rounded with apex tapering to a point. Flowers appear in clusters or heads, mostly with 4 petals in white or cream color, blooming from June to July. The capsular fruit is less than 1/8 inch in length and has many small, thin brown seeds.