Horticulture Unlimited Inc.

Plant Guide

Evergreen Pear Tree
Evergreen Pear Tree

Pyrus kawakamii

The Evergreen Pear Tree <em>(Pyrus kawakamii)</em> is prized for its beautiful winter color. It grows moderately from fifteen to thirty feet high with an equal but irregular spread. It has dark green, glossy, oval-shaped…

Evergreen Pistache
Evergreen Pistache

Pistacia lentiscus

This dense evergreen makes an excellent screen, growing twenty to twenty-five feet high and wide. It can be trained as a single or multi-stem tree or a large hedge. Its small, leathery leaves are olive green and have thr…

False Sisal
False Sisal

Agave decipiens

The false sisal is a dramatic plant that grows five feet tall and wide. It will get much larger to about ten feet in frost-free locations. This agave is known for its bright green, long foliage that forms a tight, symmet…

Faxon Yucca
Faxon Yucca

Yucca faxoniana

This slow-growing yucca reaches fifteen feet tall with a ten-foot spread to form an upright, attractive trunk and distinctive rosette with sword-shaped leaves. It can sometimes branch out, forming two heads. Branched hea…

Feather Bush
Feather Bush

Lysiloma watsonii

Feather bush is a graceful, single- or multi-trunk evergreen or semi-deciduous tree with a wide, spreading growth habit to heights of fifteen to twenty feet and widths of about fifteen feet. It has lacy, bright green to…

Firecracker Bush
Firecracker Bush

Hamelia patens

The multi-trunk evergreen matures quickly up to six feet tall and wide with bright green foliage that has a pointed tip and grows in clusters along the branches. During the warmer weather, the leaves are covered in fine…

Firethorn
Firethorn

Pyracantha coccinea

The evergreen, noted for its spectacular display of orange-red berries and shiny, brown bark, climbs to ten feet tall and about twelve to fifteen feet wide. It has small, rounded, dark glossy green foliage and has extrem…

Fishhook Barrel Cactus
Fishhook Barrel Cactus

Ferocactus wislizenii

The Fishhook Barrel Cactus is recognized by the curved and hooked central spine and by the large, ribbed, “barrel-shaped” body. Bright orange to yellow colored flowers will appear in September and October in a ring aroun…

Flat-flowered Aloe
Flat-flowered Aloe

Aloe marlothii

The large, impressive, single-stem aloe grows to ten feet or more. The plant has a broad base and tapers as it grows upward. Older foliage forms a dry skirt around the plant. Its new foliage is broad, heavy, and grayish-…

Foxtail Agave
Foxtail Agave

Agave attenuata

This graceful accent plant has light, bluish-green, smooth, pliable foliage that forms a rosette of growth to five feet tall and wide. It has arching leaves and does not produce spines. The variety ‘Nova’ is smaller with…

Foxtail Fern
Foxtail Fern

Asparagus densiflorus

This low-growing evergreen has feathery, upright, bright green, needle-like stems and trailing branches. It is not a true fern but has fern-like foliage and a dense growth habit, growing two to three feet tall and three…

Fruitless Olive
Fruitless Olive

Oleo europaea

The fruitless olive is a distinctive evergreen that grows at a slow to medium rate to twenty-five to thirty feet tall and wide, and has an airy appearance. It is either a single- or multiple-trunk, has narrow, gray-green…

Gazania
Gazania

Gazania rigens

The gazania has a compact, mounding growth habit and produces beautiful flowers and dark blue or green dandelion-like leaves that grow one foot high and wide. In spring, large, daisy-like blooms appear that come in a var…

Giant Hesperaloe
Giant Hesperaloe

Hesperaloe funifera

This excellent, slow-growing evergreen has an erect, bold, striking growth habit. It produces stiff, narrow green leaves that form a massive clump of upright growth and reaches six feet tall and wide. Its leaf margins ha…

Gold Flame Honeysuckle
Gold Flame Honeysuckle

Lonicera x heckrottii

The twining, woody, deciduous to semi-deciduous, climber grows vigorously to twelve to fifteen feet tall and spreads to ten feet. It has shiny, oval, bluish-green foliage with reddish stems that provide ornamental intere…

Gold Tooth Aloe
Gold Tooth Aloe

Aloe x nobilis

The low-growing, clumping aloe reaches about one foot tall and wide with many clustering offsets. It has thick, succulent, short, green leaves that grow in rosettes with large, yellow, toothed edges along the margins of…

Golden Barrel Cactus
Golden Barrel Cactus

Echinocactus grusonii

The golden barrel cactus has a globe-like appearance and is recognized by its magnificent color that comes from vertical yellow ribs that line its edges. The spines of the golden barrel cactus will light up any landscape…

Golden Fleece
Golden Fleece

Thymophylla pentachaeta

This low-growing, tufted, herbaceous perennial is a short-lived plant that grows seven inches tall and wide. It re-seeds itself each year during the summer monsoon and re-grows each season with warm weather. The plant ha…

Golden Torch
Golden Torch

Echinopsis spachiana

The golden torch is a beautiful, multi-stem, columnar cactus that produces many upright branches and grows five to seven feet tall. It is lime-green with long, radial, yellowish-white spines that turn gray as the plant a…

Gopher Plant
Gopher Plant

Euphorbia rigida

This mounding evergreen grows to about two feet tall with a three-foot spread, and has attractive, narrow, pointed, blue-green, sharp leaves. It produces rounded clusters of papery chartreuse yellow flower bracts that ap…