Houseplants With Blue Flowers (10 Varieties To Try)


In the long, cold days of winter, houseplants can brighten up your home – especially ones that boast colorful leaves and flowers! Some houseplants produce flowers during part of the year – and one impressive color you can find is blue.

So, which houseplants have blue flowers?  Houseplants with blue flowers include Belosynapsis ciliata, Bengal Clock Vine, Blue Ginger, Butterfly Pea, Cochliostema, Giant Apostles’ Iris, Mini Angel’s Trumpet, Orchid, Peruvian Jacinth, and Rosemary. Some of these plants have other variations that produce flower colors other than blue.

Of course, some of these plants are cold-hardy and can stay outdoors if you live in a warm enough climate.  Otherwise, you will need to take them inside during winter and bring them back outside for summer.

In this article, we’ll take a closer look at 10 houseplants with blue flowers.  We’ll also discuss their needs in terms of water, light, and other important factors.

Let’s get going.

Houseplants With Blue Flowers

There are many houseplants with blue flowers available, but here is a list of 10 to get you started:

  • Belosynapsis ciliata
  • Bengal Clock Vine
  • Blue Ginger
  • Butterfly Pea
  • Cochliostema
  • Giant Apostles’ Iris
  • Mini Angel’s Trumpet
  • Orchid ‘Vanda Pachara Delight’
  • Peruvian Jacinth
  • Rosemary ‘Logee’s Blue’

Let’s start off with the Belosynapsis ciliata.

Belosynapsis ciliata

Belosynapsis ciliata is a houseplant that produces small (less than 1 inch) blue flowers.  The leaves of this perennial plant are shiny, and the plant has rhizomes underground.

Belosynapsis ciliata needs moderate moisture levels and needs good drainage in a container.  Too much water will cause root rot and eventually kill the plant.

Belosynapsis ciliata likes partial shade and tolerates humidity.  It prefers a slightly acidic to neutral soil (pH of 6.1 to 7.3).

Belosynapsis ciliata prefers warm temperatures.  As an outdoor plant, it is hardy to Zone 12 (as cold as 50 degrees Fahrenheit or 10 degrees Celsius).

This plant grows to a height of 6 to 8 inches with a width of 18 to 24 inches.

You can propagate Belosynapsis ciliata by stem cuttings.

You can learn more about Belosynapsis ciliata from the National Gardening Association’s Plant Database.

You can find Belosynapsis ciliata seeds from Etsy.

Bengal Clock Vine

Bengal Clock Vine (Thunbergia grandiflora) is a houseplant that produces 2 to 3 inch blue flowers from summer to early fall (flowers appear year-round in tropical climates).  The leaves of this perennial plant are evergreen, and the plant has a deep tap root underground.

Bengal Clock Vine blue flowers
Bengal Clock Vine is an evergreen perennial that produces blue flowers.

Bengal Clock Vine needs moderate moisture levels and needs good drainage in a container.  Too much water will cause root rot and eventually kill the plant.

Bengal Clock Vine is a tropical plant that likes full sun but tolerates partial shade and humidity.  It prefers a slightly acidic to neutral soil (pH of 6.1 to 7.3).

Bengal Clock Vine prefers warm temperatures.  As an outdoor plant, it is hardy to Zone 10a (as cold as 30 degrees Fahrenheit or -1 degree Celsius).

This plant grows to a height of 15 to 20 feet in nature!

You can propagate Bengal Clock Vine by division or with stem cuttings.

You can learn more about Bengal Clock Vine from the National Gardening Association’s Plant Database.

You can find Bengal Clock Vine seeds from Art Fire.

Blue Ginger

Blue Ginger (Dichorisandra thyrisflora) is a houseplant that produces small (less than 1 inch) blue flowers from late summer to fall.  The shiny leaves of this perennial plant are evergreen, and the plant has rhizomes and tubers underground.

Blue Ginger flowers
Blue Ginger has shiny leaves and produces clusters of small blue flowers.
Image courtesy of user:
Lokal_Profil via:
Wikimedia Commons: https://commons.
wikimedia.org/wiki/File:
Dichorisandra_thyrsiflora,_
RBGE_2009.jpg

Blue Ginger needs moderate to wet moisture levels.  Too much water will cause root rot and eventually kill the plant.

Blue Ginger is a tropical plant that likes partial shade and tolerates humidity.  It prefers a slightly acidic to neutral soil (pH of 6.1 to 7.3).

Blue Ginger prefers warm temperatures.  As an outdoor plant, it is hardy to Zone 9a (as cold as 20 degrees Fahrenheit or -7 degrees Celsius).

This plant grows to a height of 6 to 8 feet in nature.

You can propagate Blue Ginger by division or with stem cuttings.

You can learn more about Blue Ginger from the National Gardening Association’s Plant Database.

You can find Blue Ginger bulbs from the Nursery at TyTy.

Butterfly Pea

Butterfly Pea (Clitoria ternatea) is a houseplant that produces 1 to 2 inch blue flowers from late spring to fall.  The leaves of this perennial vine are evergreen, and the plant has a taproot underground.

Butterfly Pea blue flowers
Butterfly Pea is an evergreen vine with underground taproots and blue flowers.

Butterfly Pea needs moderate moisture levels.  Too much water will cause root rot and eventually kill the plant.

Butterfly Pea is a plant that likes full sun but tolerates partial shade, drought, and humidity.  It prefers an approximately neutral soil (pH of 6.6 to 7.3).

Butterfly Pea prefers warm temperatures.  As an outdoor plant, it is hardy to Zone 9b (as cold as 25 degrees Fahrenheit or -4 degrees Celsius).

This plant grows to a height of 6 to 10 feet in nature, with a width of 2 to 3 feet.

You can propagate Butterfly Pea by seeds (the plant is self-fertile).

You can learn more about Butterfly Pea from the National Gardening Association’s Plant Database.

You can find Butterfly Pea seeds from Etsy.

Cochliostema

Cochliostema (Cochliostema odoratissimum) is a houseplant that produces small (less than 1 inch) blue flowers from late winter to early summer.  The leaves of this perennial plant are evergreen, and it is epiphytic (meaning that it grows or climbs on trees).

cochliostema blue flowers
Cochliostema is an epiphyte (it grows on trees as it climbs them) that produces small blue flowers.
Image courtesy of user:
W. via:
Wikimedia Commons: https://commons.wikimedia.org/wiki/File:
Cochliostema_jacobjanum_
20080212.jpg

Cochliostema needs moderate moisture levels.  Too much water will cause root rot and eventually kill the plant.

Cochliostema is a plant that likes partial shade and tolerates humidity.  It prefers a slightly acidic to neutral soil (pH of 6.1 to 7.3).

Cochliostema prefers warm temperatures.  As an outdoor plant, it is hardy to Zone 11 (as cold as 40 degrees Fahrenheit or 4 degrees Celsius).

This plant grows to a height of 2 to 4 feet in nature.

You can propagate Cochliostema by seeds.

You can learn more about Cochliostema from the National Gardening Association’s Plant Database.

You can find Cochliostema seeds from Rare Palm Seeds.

Giant Apostles’ Iris

Giant Apostles’ Iris (Neomarica coeurulia) is a houseplant that produces 3 to 4 inch blue flowers from late fall to early winter.  The leaves of this perennial plant are evergreen, and it has stolons and runners.

Neomarica blue flowers
Giant Apostles’ Iris is an evergreen with stolons, runners, and blue flowers.
Image courtesy of user:
Raffi Kojian via:
Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Gardenology.org-IMG_9843_rbgm10dec.jpg

Giant Apostles’ Iris needs moderate moisture levels.  Too much water will cause root rot and eventually kill the plant.

Giant Apostles’ Iris is a plant that likes full sun but tolerates partial shade and humidity.  It prefers a slightly acidic to neutral soil (pH of 6.1 to 7.3).

Giant Apostles’ Iris is more cold hardy than other houseplants.  As an outdoor plant, it is hardy to Zone 7a (as cold as 0 degrees Fahrenheit or -18 degrees Celsius).

This plant grows to a height of 3 to 5 feet in nature.

You can propagate Giant Apostles’ Iris by division or with stolons and runners.

You can learn more about Giant Apostles’ Iris from the National Gardening Association’s Plant Database.

You can find Giant Apostles’ Iris seeds from Almost Eden.

Mini Angel’s Trumpet

Mini Angel’s Trumpet (Eriolarynx australis) is a houseplant that produces 2 to 3 inch blue flowers from late spring to early fall.  The leaves of this perennial plant are downy, and it has a taproot underground.

Mini Angels Trumpet blue flowers
Mini Angel’s Trumpet is a perennial with downy leaves and blue trumpet-shaped flowers.
Image courtesy of user:
Dick Culbert
via: https://commons.wikimedia.org/wiki/File:
Iochroma_australe_
(18922619942).jpg

Mini Angel’s Trumpet needs moderate moisture levels.  Too much water will cause root rot and eventually kill the plant.

Mini Angel’s Trumpet is a plant that likes full sun but tolerates partial shade.  It prefers acidic soil (pH of 5.1 to 6.0).

Mini Angel’s Trumpet prefers warm temperatures.  As an outdoor plant, it is hardy to Zone 9a (as cold as 20 degrees Fahrenheit or -7 degrees Celsius).

This plant grows to a height of 6 to 10 feet in nature.

You can propagate Mini Angel’s Trumpet from seed.

You can learn more about Mini Angel’s Trumpet from the National Gardening Association’s Plant Database.

You can find Mini Angel’s Trumpet seeds from Etsy.

Orchid ‘Vanda Pachara Delight’

Orchid (Orchidaceae) is a houseplant that produces 5 to 6 inch blue flowers year round.  The leaves of this perennial plant are evergreen, and it is epiphytic (meaning that it grows or climbs on trees).

Orchid blue flowers
Orchids come in many colors, including large blue ones.

Orchid needs dry soil.  Too much water will cause root rot and eventually kill the plant.

Orchid is a plant that likes full sun but tolerates partial shade.  It prefers acidic soil (pH of 5.5 to 6.5).

Orchid prefers warm temperatures.  As an outdoor plant, it is hardy to Zone 8a (as cold as 10 degrees Fahrenheit or -12 degrees Celsius).

This plant grows to a height of 1 to 3 feet in nature.

You can propagate Orchid by division or stem cuttings.

You can learn more about Orchid from the National Gardening Association’s Plant Database.

You can find Orchid seeds from Etsy.

Peruvian Jacinth

Peruvian Jacinth (Scilla peruviana) is a houseplant from the Mediterranean that produces small (less than 1 inch) blue flowers in late winter to spring.  The leaves of this perennial plant are long and green.

Peruvian Jacinth blue flowers
Peruvian Jacinth is actually from the Mediterranean. This perennial produces small blue flowers.
Image courtesy of user:
Joe Mabel via:
Wikimedia Commons: https://commons.wikimedia.org/wiki/File:
Bradner_Gardens_Park_13.jpg

Peruvian Jacinth needs moderately wet soil.  Too much water will cause root rot and eventually kill the plant.

Peruvian Jacinth is a plant that likes full sun but tolerates partial shade.  It prefers neutral to slightly alkaline soil (pH of 6.6 to 7.8).

Peruvian Jacinth prefers warm temperatures.  As an outdoor plant, it is hardy to Zone 7b (as cold as 5 degrees Fahrenheit or -15 degrees Celsius).

This plant grows to a height of 10 to 12 inches, with a width of 8 to 10 inches.

You can propagate Peruvian Jacinth by division or seeds.

You can learn more about Peruvian Jacinth from the National Gardening Association’s Plant Database.

You can find Peruvian Jacinth seeds from VanDusen Botanical Garden.

Rosemary ‘Logee’s Blue’

Rosemary (Scilla peruviana) is a houseplant from the Mediterranean that produces small blue flowers in spring to fall.  The leaves of this plant are thin needles.

Rosemary blue flowers
Rosemary is a fragrant herb for cooking, but the plant has a cool secret: it can produce beautiful blue flowers!

Rosemary needs somewhat dry soil.  Too much water will cause root rot and eventually kill the plant.

Rosemary is a plant that likes full sun.  It prefers slightly acidic to alkaline soil (pH of 6.6 to 8.5).

Rosemary prefers warm temperatures.  As an outdoor plant, it is hardy to Zone 8a (as cold as 10 degrees Fahrenheit or -12 degrees Celsius).

This plant grows to a height of 16 to 24 inches.

You can propagate Rosemary by cuttings or by layering.

You can learn more about Rosemary from the National Gardening Association’s Plant Database.

You can find Rosemary seeds from Logee’s.

Conclusion

Now you know about 10 houseplants with impressive blue flowers.  You also know the basics of how to care for them so you can get started with growing them at home.

You might also be interested in reading my article about houseplants with yellow flowers, my article on houseplants with orange flowers, my article on houseplants with white flowers, or my article on houseplants with purple flowers.

I hope you found this article helpful.  If so, please share it with someone who can use the information.

If you want to read some of my most popular posts, check out the “Best of GreenUpSide” page here.  Enjoy!

~Jonathon

jonathon.david.madore

Hi, I'm Jon. Let's solve your gardening problems, spend more time growing, and get the best harvest every year!

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