10 Most Common Blue Tropical Flowers

Blue is a rare color when it comes to nature. Blue flowers are one of the rarest flowers found in the world. Additionally, they convey the message of desire, love, peace, calmness, and confidence.

Blue is a color that comes in different shades and can complement just about any home garden or landscaped area of your home. Don’t know what tropical blue flower to add to your home or garden? We’ve got you covered. This article will cover the ten most common blue tropical flowers to add to your home or garden.

What Are Tropical Flowers?

The term “tropical flowers” refers to plants indigenous to tropical regions, usually those near the equator. For example, the Princess Flower (Tibouchina semidecandra) is one of the native plants of brazil. Tropical flowers do well as houseplants but often need hot, humid settings to thrive.

10 Most Common Blue Tropical Flowers

This list contains the ten most common tropical plants you can grow indoors or outdoors:

  • Blue Hydrangea

The blue hydrangea is a stunning flower that thrives in a warm, tropical climate. Some blue hydrangeas come in strikingly bright colors, while others have more subtle hues like powder blue or sky blue. Moreover, the Blue hydrangea flower conveys the message of love when offered as a gift.

Botanical Name

Hydrangea macrophylla

How to Care

The blue hydrangea requires good drainage to thrive. Therefore, ensure you water deeply three times weekly to promote root growth. Also, make sure you don’t waterlog the soil. Water in the morning during hot days to prevent the plant from wilting. Additionally, add organic mulch to improve the soil’s nutrients and texture.

  • Azure Aster 

The captivating daisy-like Azure Aster is a native North American flower. The best way to cultivate this flower is by purchasing their seeds or bedding plants. Moreover, most Azure Aster plants are rarely successful once you remove them from the wild. Also, note that this plant is endangered in some areas like New York.

Botanical Name

Symphyotrichum oolentangiense

How to Care

The Azure Aster plant doesn’t do well in overly wet soils. On the contrary, they thrive best in sandy, dry, or rocky soil. Furthermore, they require proper drainage as they may rot in soggy soils. This plant prefers a slightly acidic soil (5.5-7.5) and blooms best under full sunlight. However, they can also tolerate shaded areas.

  • Blue Anemone

The blue anemone is another beautiful and vibrant flower that can survive in just about any climate. This flower grows natively in Oregon, Washington, and several other states in North America. Moreover, the blue anemone is available in various colors, including blue, red, white, purple, pink, and bi-colored blooms.

Botanical Name

Anemonoides oregana

How to Care

Water your anemones flowers regularly to keep the soil consistently moist. The goal is to keep the soil moist, not soaking wet, as this can cause root rot. Additionally, blue anemones require at least four hours of sunlight daily.

However, most species of this plant can also strive in partial shade. Also, note that the blue anemone plant doesn’t thrive well under freezing temperatures (25F or below). If you live in cold regions, you can protect the plant from cold and frost by covering it with mulch.

  • Cornflower

Cornflowers are native to both Europe and the Americas and are an excellent choice for gardeners who want to attract pollinators to their garden. Also, they make excellent cut flowers and are available in various colors, including blue, white, purple, pink, and red.

Botanical Name

Centaurea cyanus

How to Care

Cornflowers thrive best in rich and well-drained soils. They prefer full sunlight and alkaline soil with PH 7.2 to 7.8. After the seeds have sprouted, thin the seedlings to improve the plants’ vitality. In addition, keep the soil moist (not soggy) after planting until the cornflower seeds sprout; after that, start watering occasionally.

  • Iris

Irises are stunning flowers that come in various colors and can fill your yard with a summery feeling. Moreover, the iris flower, which blooms in the spring and summer, was named after the Greek rainbow goddess.

Botanical Name

Iris spp

How to Care

Iris flowers don’t do well in waterlogged soil, so don’t overwater them. Overlogging the soil can cause the rhizomes to rot. Additionally, keep the rhizomes exposed and allow them to enjoy a bit of sun and air to help them dry out. The rhizomes will rot if they are covered with soil or other plants. Finally, ensure you space the stems and stake any stem that falls over.

  • Salvia

Salvias belong to the same mint family as basil, lavender, rosemary, and thyme. Salvias are easy-to-grow perennial plants and flower profusely all summer. Additionally, most varieties of this plant thrive in hot and dry climates.

Botanical Name

Salvia officinalis

How to Care

Salvia plants thrive well in nutrient-deficient soils, but good drainage is necessary. They are light feeders, so you don’t need to apply fertilizer regularly. Moreover, this plant doesn’t like to be crowded. Therefore, ensure you space them out when planting them in groups or with other plants.

Once established, most salvia varieties can withstand drought; watering them occasionally will make them look better. Also, note that deadheading is important for repeat blooming.

  • Dandelion

The blue dandelion flower is associated with tranquility, happiness, and faithfulness. Symbolic in many cultures, the dandelion is a popular flower in legends and folklore. Originally from Europe and Asia, these flowers are now widely available worldwide.

Botanical Name


How to Care

Dandelions prefer moist soil, so ensure you water them regularly to keep them hydrated. Also, these plants require at least six hours of sunlight daily to thrive. However, once established, this plant requires plenty of shade to prevent the greens from becoming overly bitter. Notably, dandelions don’t require mulching. Mulching only blocks out the light that the seeds need to germinate.

  • Balloon Flower

The balloon flower is a perennial plant that grows natively in Japan, China, Korea, and the Russian far east. The balloon flower is planted in spring and blooms throughout summer. Plus, this plant is exceptionally resistant to diseases and pests. Moreover, this plant returns each season, charming you with its brilliant blooms.

Botanical Name

Platycodon grandiflorus

How to Care

Balloon flowers thrive best in well-drained loamy soil and under full sunlight. However, you can place them in partial shade if the afternoon sun is very hot. Additionally, balloon flowers are easily affected by root rot, crown root, and powdery mildew.

Leaves presenting mottling and powdery spots can be treated with fungicide. If your flowers have gray molds, quickly discard them and use a preventative fungicide on healthy plants to stop the mold from spreading.

  • Felicia Daisy

The Felicia daisy plant is a perennial plant that belongs to the daisy family. This plant is native to South Africa and is cultivated primarily for ornamental purposes. The Felicia daisy plant produces stunning sky blue petals and bright yellow centers that attract butterflies and other pollinators.

Botanical Name

Felicia amelloides

How to Care

The Felicia daisy plant thrives best in fertile, moist, and well-drained soils. Additionally, this plant requires regular watering and deadheading to encourage the production of new blooms. Also, note that aphids easily attack this plant. However, you can solve this issue by washing them off with soapy water.

  • Perennial Geranium

The perennial geranium is a native of South Africa and comes in different colors, including blue, purple, and pink. This plant often produces flowers with rich colored veins that radiate from the center and look like hand-painted whiskers. Moreover, perennial geraniums begin to bloom early to late spring, and they continue to do so until mid-summer.

Botanical Name

Geranium bohemicum

How to Care

Geraniums can thrive under direct sunlight and in partial shade. However, they don’t do well in poorly-drained soils and can sulk if it is too wet. Avoid over-watering the leaves and keep them as dry as possible to keep powdery mildews away. Additionally, ensure you don’t overcrowd the plant as this promotes the formation of powdery mildews.

5 Easy-To-Grow Blue Flowers

Here’s a list of five stunning and easy-to-grow tropical flowers to add to your garden or home:

1. Thunbergia (Thunbergia grandiflora)

The first easy-to-grow flower on our list is the Thunbergia plant. Thunbergia, also known as blue sky vine, is a fast-growing plant that can reach heights of up to one foot a day. This plant produces large royal blue blossoms and can thrive in any soil type.

2. Blue Butterfly Pea (Clitoria ternatea)

The blue butterfly pea is a native of Southeast Asia and a member of the legume Fabaceae family. This plant produces butterfly-shaped flowers with a creamy white core and vibrant indigo blue petals. Also, this plant grows really quickly and has a germination period of eight to ten days.

3. Morning Glory (Ipomoea sp.)

Morning glory is a member of the Convolvulaceae family and a native of South America. This fast-growing plant produces heavenly blue flowers that attract hummingbirds, bees, and butterflies.

4. Passionflower Vine (Passiflora sp.)

Passionflower vine is native to South America. This plant produces scented flowers that attract nocturnal moths for pollination.

5. Blue Jade Vine (Strongylodon macrobotrys)

The jade vine is native to the Philippines’ tropical forests and is popular for its showy and clawed-shaped flowers. Also, the blossoms of this plant are used to make the most beautiful, intricate, and expensive leis for weddings and other ceremonies.

Tall Blue Flowers

Here’s a list of five tall blue flowers to turn your garden into a beautiful chill-out sanctuary:

1. Blue Delphinium (Delphinium elatum)

Blue delphiniums are fast-growing plants that can reach heights of six feet. Make sure you give this plant something to lean on if you want it to reach its full potential.

2. Clematis (Clematis)

Clematis is a flowering climber plant that belongs to the Ranunculaceae family. This plant represents courage, ingenuity, and faithfulness and is primarily used as an ornament.

3. Blue False Indigo (Baptisia australis)

The blue false indigo is a perennial plant that reaches two to five feet in height. This plant can grow quite tall. Therefore, it’s best to plant them with other companion plants or next to fences, which can be a delight to see.

 4. Blue Mist Shrub (Caryopteris clandonensis)

The blue mist shrub is a shrub that produces showy, aromatic flowers. This shrub can reach heights of three to five feet. Additionally, the flowers bloom during late summer and until the first winter frost.

5. Bluecrown Passionflower (Passiflora caerulea)

The blue-crown passionflower spreads like a vine, growing between three and six feet tall. Also, this plant can reach heights of ten to 25 feet. The blue-crown passionflower features stunning, twining tendrils and vivid blue flowers.

5 Small Blue Flowers to Add to Your Garden

Next, we’ll cover the five best small blue flowers to add to your home or garden:

Forget-Me-Nots (Myosotis sylvatica)

Forget-Me-Not is popular among gardeners due to its stunning and bright-colored flowers. Moreover, you can always have a plentiful supply because the blossoms self-seed.

Blue Calla Lilies (Zantedeschia aethiopica)

Blue calla lilies produce beautiful flowers often used in bridal bouquets, party decorations, baptismal flowers, and funerals. These stunning flowers are a perfect fit for any occasion as they are used to convey feelings of appreciation and gratitude.

Blue Orchids (Vanda coerulea)

Orchids are treasured flowers that signify strength, beauty, and wealth. Even those who aren’t very attracted to flowers can be won over by the breathtakingly lovely blossoms of blue orchids. Moreover, the blue orchids are incredibly popular for their beauty, but they are quite rare to find.

Blue Daisy (Felicia amelloides)

The Blue daisy is a fast-growing perennial plant with classic and stunning blue flowers. The flowers also feature a vivid yellow core, and the flowers enjoy being out in the sunshine.

 Swan River Daisies (Brachyscome iberidifolia)

Swan river daisies are easy-to-grow annual plants with gorgeous and showy blue flowers. This plant grows fairly low, reaching only one to five feet tall. Moreover, swan river daisies thrive best in cool summer climates and enjoy being under full sunlight, as long as it isn’t too hot.

Best Blue Tropical Flower for Indoors

There are countless house plants with blue flowers, but here’s a list of ten best blue tropical flowers to grow indoors:

Bengal Clock Vine (Thunbergia grandiflora)

The Bengal clock vine is a perennial plant that reaches a height of two to three inches and produces blue blossoms year-round in tropical climates. Moreover, this plant produces evergreen leaves and has a deep tap root underground.

Blue Ginger (Dichorisandra thyrisflora)

Blue ginger is a perennial houseplant producing shiny, small blue flowers (less than 1 inch). This plant blooms from late summer to early fall.  Also, the leaves of this plant are evergreen, and the tubers and rhizomes are buried underground.

Butterfly Pea (Clitoria ternatea)

Butterfly pea is a perennial houseplant with blue flowers that bloom from late spring to fall. In addition, the leaves of this plant are evergreen. Moreover, this plant grows well under full sunlight but can tolerate partial shade, humidity, and drought.

Orchid ‘Vanda Pachara Delight’ (Orchidaceae)

The orchid “vanda Pachara Delight” is a perennial houseplant that blooms year-round. This orchid also has evergreen leaves and is epiphytic, which means it climbs or grows on trees. On a die note, you can propagate this plant through stem cutting or division.

Rosemary’ Logee’s Blue’ (Scilla peruviana)

Rosemary is a native to the Mediterranean, and it features small,needle-like leaves. This plant thrives under full sunlight. In addition, it prefers slightly acidic soil with a PH ranging from 6.6 to 8.5.


Blue is a truly stunning color that can bring great joy and life to your garden. Looking for some magnificent blue plant to add to your garden? Why not try the tropical flowers listed in this article to discover how amazing they are?

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