Horticulture Unlimited Inc.

Plant Guide

Carolina Jessamine
Carolina Jessamine

Gelsemium sempervirens

This attractive, fast-growing, compact evergreen vine climbs to heights of ten-twenty feet. Its foliage is glossy green with pointed tips, and its stems are smooth and reddish-brown. In early spring, the plant produces s…

Cat’s Claw
Cat’s Claw

Macfadyena unguis cati

This self-climbing, self-attaching evergreen is a fast, aggressive grower that climbs to heights of twenty-five feet or higher with an equal spread. The foliage has with two green leaflets and an interesting three-pronge…

Century Plant
Century Plant

Agave americana

The Century Plant is the granddaddy of all agaves. It grows slowly to about 6 feet tall by 8-10 feet wide. The wide, grey-green leaves have stiff terminal spines and curved teeth along the margins. After about ten years,…

Century Plant
Century Plant

Agave guiengola

This medium-sized plant is an attractive ornamental that forms rosettes of broad, blue-gray leaves that are thick and succulent looking. It grows three to four feet tall and four to six feet wide. Its foliage is wide at…

Chaparral Sage
Chaparral Sage

Salvia clevelandii

Native to California, the chaparral sage performs extremely well in both low and middle deserts of Arizona. Chaparral sage grows in excess of 5 feet tall by 6 feet wide. The soft gray-green foliage of chaparral sage is e…

Chaste Tree
Chaste Tree

Vitex agnus-castus

Chaste tree grows quite well in Southern Arizona, though it has its origins in Southern Europe and the Mediterranean. Very shrub-like and naturally multi-trunked, it can be trained to grow as a small tree eventually reac…

Chilean Mesquite Tree
Chilean Mesquite Tree

Prosopis chilensis

Chilean mesquite tree is popular in Southern Arizona because of its rapid growth, lower water requirement and ability to provide shade. Native to South America, the Chilean mesquite grows either singly or multi-trunked r…

Chinese Elm
Chinese Elm

Ulmus parvifolia

This fast-growing shade tree grows thirty to forty feet tall with an equal spread and develops a broad, vase-like shape with a pendulous, weeping branch habit. It is semi-deciduous, losing its leaves in late December in…

Chinese Jasmine
Chinese Jasmine

Jasminum polyanthum

The fast-growing, tropical evergreen climbs to heights of twelve to fifteen feet or more with fine-textured, deep green foliage with five to seven leaflets and slender, twining, woody stems. The underside of its leaves i…

Chinese Wisteria
Chinese Wisteria

Wisteria sinensis

The long-lived, deciduous twining vine grows fifteen to twenty feet, and is admired for its gnarly growth habit. It produces amazing clusters of fragrant, cascading purple, white, and lilac flowers that bloom over a long…

Chuparosa
Chuparosa

Justicia californica

Native to the Sonoran Desert, “chuparosa” is a shrub that normally grows to about 3 feet tall and 4 feet wide. Under ideal contitions, it can grow to 4 feet tall and 6 feet wide. Leaves are semi-succulent and measure abo…

Churee
Churee

Euphorbia royleana

The attractive, fleshy succulent has deep green branches and ornamental, knobby bumps on its columns. It grows eight to ten feet tall and four to six feet wide. In warm weather, it produces a whorl of small, oval, short…

Coastal Century Plant
Coastal Century Plant

Agave shawii

The plant has attractive, fleshy, dark-green, leaves with sharp, serrated, brown teeth along its edges and a dark reddish-brown terminal spine. It forms a tight rosette and grows three feet tall and four to five feet wid…

Common Fig
Common Fig

Ficus carica

The common fig tree is a deciduous, spreading, multi-trunk tree with smooth, gray bark that grows to heights of fifteen to thirty feet and has a wide but low, open canopy. It has large multi-lobed, showy, dark green foli…

Common Ice Plant
Common Ice Plant

Carpobrotus chilensis

The succulent evergreen with brilliant blooms has three-sided leaves that form a thick, fleshy green mat. The common ice plant grows six inches to one foot, spreading three feet through an aggressive rooting system. Its…

Coral Aloe
Coral Aloe

Aloe striata

The plant has attractive, broad, bluish-green, smooth leaves and coral red blossoms. It grows two to three feet tall and two feet wide. Unlike other aloes with serrated leaves or a spine, it has a smooth, pink margin. Th…

Coral Fountain
Coral Fountain

Russelia equisetiformis

The coral fountain is a flowering perennial plant with long, slender, arching, fountain-like branches that form a dense mound to four feet tall and six feet wide. Its weeping branches produce dark green, scale-like leave…

Cow Horn Agave
Cow Horn Agave

Agave bovicornuta

The plant grows three feet tall and four to six feet wide, and is recognized by its satin-like, darker green to yellowish-green foliage that forms a rosette. Brownish-red teeth run along the edges of the leaves. The youn…

Crape Myrtle
Crape Myrtle

Lagerstroemia indica

This deciduous tree grows quickly to heights of fifteen to twenty feet and six to fifteen feet wide, with single or multiple trunks and a rounded crown. The leaves are small, rounded and deep green, and turn beautiful co…

Creeping Dalea
Creeping Dalea

Dalea greggii

Creeping Dalea, also known as “Trailing Indigo Bush,” is an attractive, low-growing perennial with small silvery-gray leaves. Although solitary plants can be grown, <em>Dalea greggii</em> is often used in groupings as a…