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Letter I Plants

The Letter I plants represents many incredible trees and shrubs all over the world. There are trees and shrubs from sub-tropical locations, as well as Europe, and Asian countries. Sit back, relax, and hang out with Herbee in this list of plants page.


There are around fifty species in the Iberis - Candytuft genus. The Candytuft is native to southern Europe, northern Africa, and western Asia. This specie will grow well in zones seven through eleven in the United States.

The Iberis family consists of annual, perennial, and evergreen sub-shrubs.

We have planted the species in the greenhouse, and germination rates are very good at around 68°F.

The Candytuft is pretty much frost hardy, and loves a sunny location. The species thrive in light and well drained soil.

One of our favorite varieties to grow is the Gibraltar, which is native to southern Spain. The Gibraltar will mature to one foot, and is an incredible spreading evergreen plant that produces white flowers.

The flowers have a tinge of red to pink tones and emerge in the summer months. It's great specimen for rock gardens.


The Ilex - Holly is a large genus of the letter I plants. It consists of over four hundred species. This plant family is native to many different countries including, Europe, North Africa, western Asia, and North America.

Close Up Carissa Holly Pointed Leaves

The Ilex does well in zones six through ten in the United States. They are deciduous or evergreen shrubs and trees.

The Holly is frost hardy and will grow in a rich organic soil mixture. They love full sun in cool climates, but must be watered in warmer dry climates.

The Holly is best known for its shiny and rich red tone berries that appear in the autumn and winter months. It's a great specimen for holiday decorations.


There are around forty specimens in the Illicium genus. The Japanese Anise is considered one of the most popular species. This family will grow native in sub-tropical sections of east Asia, and North and South America.

These species will grow in zones eight through eleven in the United States. This particular family thrives in part shade to full shade conditions. The Japanese Anise is an incredible specie that can mature twenty feet high and wide.

The leaves are fragrant and the yellow and white tone flowers appear in mid spring. Some of the varieties bear fruit which is poisonous if eaten. It's a great accent plant for a large open garden or landscape.

Plow & Hearth


The Indigofera genus is made up of over seven hundred species that are native to many tropical and sub-tropical regions. The family consists of annuals, perennials shrubs and trees. This specie will do well in zones nine through eleven. Indigofera plants prefer light and well drained soil and partial shade.

One of the most spectacular varieties is native to Australia and called the Australian Indigo. This specie will mature to around six feet high and wide. Tiny mauve to pink flowers are present in the winter months throughout summer time.

Another popular variety that is native to China and Japan is the decora. Long spikes of mauve tone flowers appear in the summer months. It's a great specie for those warmer climates.


The next plant, Iochroma, is a family that are actually members of the nightshade family.

The Iochroma is native to sub-tropical and tropical locations from South to Central America.

These letter I plants will thrive in zones nine through twelve.

The Iochroma love warm and humid conditions. Their flowers are tubular blue, white, purple, or red, and appear in the summer months through fall.

This family will do well in full sun to part shade and needs well drained soil.

The species looks striking in many styles of gardens, as well as containers, and will germinate well in greenhouses.


The Isoplexis is a small section of species, with only three unique but incredible evergreen sub-shrubs. They're native to Madeira and the Canary Islands.

They will do well in zones nine through eleven in the United States.

This family can take sun or part shade and must be kept watered in the warm and dry summer months.

The canariensis has one of the most spectacular show of flowers in the summer months.

The flowers are tubular in shape and colors vary between orange, yellow and brown tones.

This variety can mature to five tall and wide.

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The Isopogon - Drumsticks is a genus made up of about thirty specimens, mostly native to Australia. These letter I plants have some varieties that are native to the Blue Mountains of New South Whales.

Isopogon are evergreen shrubs that grow in zones nine through eleven in the United States. They need a sunny location and well drained soil.

The highlight of these specimens arrives in the spring and summer months with fragrant white, to off-white and pink globe shaped flowers.

After the flowers have died off, fruit that resembles tiny pine cones appears. This family can mature up to ten feet tall. This is another incredible evergreen shrub.

Herbee Greenthumb


Virginia Sweetspire

The Itea genus consists of only ten species of evergreen and deciduous shrubs.

This family is native to temperate Asia, and thrives in tropical climates. There is one specie that is native to North America.

The Virginia Sweetspire will grow well in zones seven through ten in the United States. This incredible variety grows wild in zone seven where we live. The Itea family loves partial shade, and must have a moist soil.

The Itea are known for their fragrant flowers that appear in the spring or fall months, depending on the variety. It's a great shrub or tree along a wooded area.

The eight letter I plants above are incredible specimens, and each represent individual beauty in many geographic locations.

Other Articles You Might Be Interested In.

Tropical Plants --- Companion Planting

Virginia Sweetspire --- More List Of Plants (Beside Letter I Plants)

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