Plants That Start With I

Last Updated on December 12, 2022 by Clarisse Walters

Plants That Start With I

List of plants that start with the letter I

The plants beginning with I included in this article are:

  1. Ice plant
  2. Iceland poppy
  3. Impatiens
  4. Incrediball Hydrangea
  5. Indian Hawthorn
  6. Inkberry Holly
  7. Iris Flowers
  8. Irish Moss
  9. Itoh Peony
  10. Ivy Geranium

In the world, there are thousands of different plants, so it can be really difficult to identify them all. When you look outside, you are greeted by hundreds of plants, all of which could be different varieties of another plant. 

As there are so many plants out there, we have put together this guide to help you. In this guide, we have collected together various plants that begin with the letter I. From the Ice Plant to the Itoh Peony, there are plenty of plants to discover. 

House plants that start with I

  1. Inch Plant (botanical name Tradescantia zebrina)
  2. Iresine (Iresine herbstii)
  3. Iron Cross Begonia (Begonia masoniana)

Here are 10 plants that start with the letter I.

Ice Plant Flower (Delosperma spp. Lampranthus spp.)

Ice plant is a very common name that covers a range of species of plants under this family name. The most popular plants that come under this name are Dewplants (Lampranthus spp) and Delosperma (Delosperma spp).

Do Ice plants come back every year?

Despite their name, these are warm-weather plants that are also perennials. This means that they can live for more than two years. Their blooms typically have bright colors such as red, pink, orange and purple.

What is a flower that starts with an I?

The reason for the ice plant name is due to tiny hairs that can be seen on these plants. The hairs reflect light in a certain way, which makes them look like ice crystals. In warmer climates, ice plants commonly have evergreen foliage. Yet once the temperature drops, the foliage becomes a much darker green. 

Ice plant care

This species of plant has a very fast growth rate. Depending on the species within this family, these plants can be used as ground cover, or as a shrub. Ice plants will begin blooming in spring, and some varieties will continue to bloom throughout the summer. They enjoy lots of sunlight and sandy but well-drained soil. 

Iceland Poppy (Papaver nudicaule)

How to grow iceland poppies -Iceland Poppy
Iceland poppy seeds grow abundantly in the right conditions

Iceland poppies are also known as Arctic poppies. These are hardy plants that enjoy cooler temperatures but still thrive in warmer climates as well. This plant is a perennial and will give your garden a pop of color, year after year.

When do Iceland poppies bloom?

You should aim to plant these flowers in the late winter or early spring, as they are a slow-growing plant. So then you can expect blooms in the late spring and early summer.

Iceland poppy foliage

These plants have feathery foliage and produce fuzzy flower stems. The stems themselves are leafless, and each one will produce a brightly colored flower. Each flower head will produce four paper-thin yet silky ruffled petals. The Iceland Poppy can bloom in a range of colors from red, yellow, pink and even white. 

Impatiens (Impatiens spp)

Impatiens are an annual plant that is very popular due to their beautiful blooms and because they can grow in shady areas. In colder climates, it is best to plant these flowers once the frosts have passed. Therefore, these plants can bloom in the late spring into summer

Impatiens colors

Impatiens are fast-growing plants that can either have vibrant colored blooms or pastel colored blooms. These blooms can be seen in the following colors: yellow, coral, red, pink, white and violet.

How much sun do impatiens need?

This kind of plant doesn’t grow very tall at all. You’ll never see an Impatiens plant taller than a foot. Impatiens enjoy growing in partial to full shade, as long as they have rich and well-drained soil.

Incrediball Hydrangea (Hydrangea arborescens ‘Abetwo’ Incrediball)

The Incrediball Hydrangea is a type of broadleaf flowering shrub. The reason for the “incrediball” name is due to the size of the flower heads. The flower heads look like huge balls of blooms that are very impressive to look at. As the flower heads are so large, thick stems are produced to keep these blooms up and supported. 

Incrediball Hydrangea care

This is a fast-growing plant, which is commonly planted during the fall. If they are planted in their perfect conditions, these flowers can live for up to 20 years. These plants can be used just as a single shrub or planted to form a border. With Incrediball Hydrangeas in your garden, you will notice a lot more butterflies visiting your garden as well. 

Indian Hawthorn Varieties (Rhaphiolepis indica)

How big does an Indian hawthorn get?
Indian Hawthorn (Rhaphiolepis indica)
Is Indian hawthorn fast growing? No, it grows slowly and is not invasive.

The Indian Hawthorn is a small shrub plant that grows in a neat and rounded shape naturally. This shrub can be found growing in China, Asia and Australia.

What to plant with Indian hawthorn?

This plant is a common choice in warmer climates, to be used as foundation plants or to be used as a hedge. However, it is also the perfect container plant. It is a slow-growing plant, so it should be planted during the spring. 

Indian hawthorn flowering season

The foliage on this plant is slightly bronze. Yet once it has matured, that bronze turns into a deep green color. The leaves grow to roughly 2 to 4 inches long in an oblong shape. The leaves also have a leather-like texture and are serrated on the edges.

In the spring, small and fragrant clusters of white and pink flowers are produced. These blooms create a star-like shape, with each flower having five petals. Whilst in the winter, small blue fruits are produced and are typically eaten by wildlife. 

Inkberry Holly Varieties (Ilex glabra)

Inkberry Holly is a slow-growing, broadleaf shrub. This is a very easy plant to grow and will provide your garden with some color during the spring. This plant is named Inkberry, due to the berry-like fruits that are produced that have a very dark-colored appearance.

These are produced from white-greenish flowers that appear in May and June. The leaves of this plant are similar in appearance to holly oak. However, compared to other holly plants, the leaves on this plant are smooth instead of prickly. 

What can I plant with inkberry holly?

It is common for Inkberry Holly to be planted as the sole food for beehives, as the bees enjoy the flowers they produce. Wild birds also enjoy this plant, and Inkberry Holly is deer resistant. These shrubs are ideal for grouping together to create a border or used around ponds or water features. This is because they enjoy constantly moist soil. 

Iris Flowers (Iris)

Iris Flowers (Iris) - what to do with Irises after they bloom
Iris flower colors include white, yellow, blue and purple

There are over 300 different species of flowers in the Iris family. These flowers either grow from bulbs or from rhizomes. They have long stems and three petals on their flower heads that stand upright.

Iris flower colors

Irises can come in various sizes, with some being as short as six inches and others can grow up to four feet in height. Normally, they bloom in shades of white, yellow, blue and purple.

How long do iris flowers last?

Iris flowers can be seen blooming during spring and summer. While others varieties will continue to bloom in the fall as well. With Irises in your garden, you will attract more butterflies and hummingbirds to your garden. 

Video – How to grow Irises

Iris blooms – a lovely flower starting with the letter I

Irish Moss Plant (Sagina subulata)

Irish Moss is usually seen as ground cover for rock gardens or on low-footfall areas as a lawn substitute. This plant looks like moss, but it has different growing requirements. It prefers a balance of sunny to partial shade, but it doesn’t enjoy intense heat or wet conditions. It enjoys a good balance.

 Does Irish moss spread quickly?

This plant will keep its luscious green color all year long. At certain times, little white flowers are produced and will bloom in the late spring to early summer. Irish moss will grow to about 2 inches high but will spread rapidly and widely. 

Itoh Peony (Paeoniaceae)

The Itoh Peony takes qualities from both of its parent plants – the tree and herbaceous peonies. Therefore, the Itoh Peony has large and long-lasting blooms that are supported on very strong stems. Alongside this, the Itoh Peony has deep green foliage that will go all the way until fall. The flower head includes eight-inch long petals that encase a yellow stamen. These peonies can come in a range of colors from pink, white, yellow, coral and red. 

Like with other species of peonies, these plants make a great addition to flower arrangements. They have a lemony aroma that is mixed with other shrubs or used as stand-alone shrubs. This plant is extremely popular and always high in demand due to the large and beautiful blooms. Itoh Peony in containers do particularly well.

Ivy Geranium varieties (Pelargonium peltatum)

Ivy Geranium (Pelargonium peltatum)
Ivy geranium pictures

Ivy geranium care

The Ivy Geranium is a quick-growing plant during the warmer spring months. This is an attractive plant in and out of bloom. It is also a low maintenance plant, that is free flowering. The Ivy Geranium is typically grown in hanging baskets or large containers. When mature, they will go between 12 and 30 inches. They enjoy full sunlight and well-drained, moist soil. 

Ivy geranium colors

The flowers on this plant typically bloom throughout the spring to the fall. The blooms are typically red, salmon, pink and white in color. This plant will provide your garden with lots of color throughout the year. 


We have given you 10 plants that begin with the letter I. There are various plants that begin with this letter and all of these plants you can plant in your own garden. Now you have a deeper understanding of some of the plants that begin with I, that you can now recognize and impress your friends and family with. 

Frequently Asked Questions

Are There Any Flowers That Begin With The Letter I?

There is a long list of flowers that begin with the letter I. Some of the flowers on this list include the Iceland Poppy, Iris Flowers, Ipheon, Ipomea and Ixia. All of these plants have bright, colorful blooms that can bloom from spring through to fall. 

What Is The Iris Flower Known For?

The Iris flower symbolizes hope, faith, wisdom and courage. However, the color of the bloom affects the meaning of the flower. For example, a purple iris flower is known for and symbolizes wisdom. Yet blue iris flowers are known as a sign of hope and faith. 

Is Inkberry Holly Poisonous To Dogs?

The berries do contain toxins, which might be fatal if consumed in large quantities. The sharp leaves of the plant usually keep dogs away from eating too many berries, which could harm them. The plant itself isn’t poisonous, but the berries are toxic to humans and animals if eaten in large quantities.

Resources relating to Plants that start with I:

Plants that Start with I –

Perennials that start with the letter I | Plant Delights

15 Flowers That Start With I (List of Flower Names I)

Clarisse Walters
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