10 Flowers that Start with “I”

Here's a small list of beautiful flowers that start with "I". Check them out and learn water needs, sun vs. shade preferences, soil pH, hardiness zones and more.

Below is our expansive gallery and directory featuring flowers that start with “I”.

A stunning bright-colored flower, the Ice Plant, which is an example of a flower whose first letter is “I” got its name from its characteristic appearance. The glossy red-purple foliage that resembles the Daisy in shape and stretches 2” diameter contains transparent flakes that look like pieces of ice. Its genus Delosperma cooperi also refers to the flower’s exposed seeds.

Related: 100s of Flowers from A-Z

Ice plant (Delosperma cooperi)

• Common Name: Ice plant
• Scientific Name: Delosperma cooperi
• Type: Perennial
• Water: Dry
• Soil PH: 5.8 – 7.2
• Flower Color: Glossy red-purple
• Special Characteristics: Showy flowers
• Hardiness Zone(s): 6 to 10
• Height At Maturity: 3-6″
• Sun: Full sun
• Sub Type: Groundcover

Inch Plant (Tradescantia zebrina)

• Common Name: Inch plant
• Scientific Name: Tradescantia zebrina
• Type: Perennial
• Water: Medium
• Soil PH: 6-8
• Flower Color: Lavender-purple
• Special Characteristics: Showy flowers, easy-to-grow, container
• Hardiness Zone(s): 8-12
• Height At Maturity: 6-9′
• Sun: Full sun to part shade
• Sub Type: Groundcover

Indian blanket (Gaillardia pulchella)

• Common Name: Indian blanket
• Scientific Name: Gaillardia pulchella
• Type: Annual
• Water: Dry to medium
• Soil PH: 6.2 to 7.2
• Flower Color: Red, Yellow, Bicolor
• Special Characteristics: Attracts birds and butterflies, Tolerates drought, showy flowers, easy to grow
• Hardiness Zone(s): 2 to 11
• Height At Maturity: 12-18”
• Sun: Full sun

Indian pink (Spigelia marilandica)

• Common Name: Indian pink
• Scientific Name: Spigelia marilandica
• Type: Perennial
• Water: Medium
• Soil PH: 6-7
• Flower Color: Red and yellow
• Special Characteristics: Attracts hummingbirds, Cut flowers, Easy-to-grow
• Hardiness Zone(s): 5 to 9
• Height At Maturity: 12″-24″
• Sun: Full Shade
• Sub Type: Groundcover

Iris (Iris germanica)

• Common Name: Iris
• Scientific Name: Iris germanica
• Type: Perennial
• Water: Medium
• Soil PH: 6.8 – 7.0
• Flower Color: Purple falls with yellow beards and lilac standards
• Special Characteristics: Deer-resistant, showy flowers, fragrant
• Hardiness Zone(s): 3 to 10
• Height At Maturity: 24-36″
• Sun: Full sun
• Sub Type: Groundcover

Iris (Iris graminea)

• Common Name: Iris
• Scientific Name: Iris graminea
• Type: Perennial
• Water: Medium
• Soil PH: 8-10
• Flower Color: Purple-violet
• Special Characteristics: Deer-resistant, showy flowers, cut flowers, fragrant, easy to grow
• Hardiness Zone(s): 5 to 8
• Height At Maturity: 9-18″
• Sun: Full sun to part shade
• Sub Type: Groundcover

Iris (Iris maackii)

• Common Name: Iris
• Scientific Name: Iris maackii
• Type: Perennial
• Water: Medium
• Soil PH: 4.8-5.2
• Flower Color: Yellow
• Special Characteristics: Deer-resistant, showy flowers, easy-to-grow
• Hardiness Zone(s): 6 to 9
• Height At Maturity: 24-30″
• Sun: Full sun to part shade

Italian aster (Aster amellus “Veilchenkönigin” VIOLET QUEEN)

• Common Name: Italian aster
• Scientific Name: Aster amellus “Veilchenkönigin” VIOLET QUEEN
• Type: Perennial
• Water: Needs moderate moisture
• Soil PH: 5.6 – 7.5
• Flower Color: Deep violet-blue with a yellow center disk
• Special Characteristics: Showy flowers, easy-to-grow
• Hardiness Zone(s): 5 to 8
• Height At Maturity: 12-24″
• Sun: Full sun
• Sub Type: Groundcover

Ivyleaf geranium (Pelargonium peltatum)

• Common Name: Ivyleaf geranium
• Scientific Name: Pelargonium peltatum
• Type: Perennial
• Water: Needs moderate moisture
• Soil PH: 6-8
• Flower Color: Pink, red, lilac, white
• Special Characteristics: Showy flowers, container
• Hardiness Zone(s): 10 to 11
• Height At Maturity: 12-24″
• Sun: Full sun to part shade
• Sub Type: Groundcover

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Native to South Africa, the Ice Plant typically grow up to 3” tall and spreads like a mat 24” or more. These neon-like showy flowers, however, are not winter-hardy, contrary to its name.

Know more about the perennial flower Ice Plant plus all other interesting plants and flowers that start with I.

Not a lot of websites thoroughly list plants and flowers alphabetically. However, because we have a database set up, we’re able to offer a comprehensive listing of plants and flowers that you can filter alphabetically.

Be sure to also check out our entire garden directory where you’ll find annuals as well.