8 Blue Flower Vines For Your Garden ( Pictures & Care Tips)

When it comes to flowers, blue is one of the very rarely seen colors in the garden. However, the situation is changing slowly.

Thanks to commercial cultivation, nowadays there are a ton of different plants with blue flowers to choose from. But, what if you have a fence and want to add some blue flowering vines? Wondering if there are any good options?

Well, the answer is yes. In this article, I’m going to share with you the list of the most beautiful blue flower vines that you can grow easily.

Without wasting any more time, let’s get straight into the list.

1. Morning Glory ‘Heavenly Blue’

Morning glory is one of the most popular ornamental flowering vines among garden designers. It is a fast-growing, twining climber with beautiful heart-shaped leaves and vibrant funnel (trumpet) shaped sky blue flowers.

There are more than 1000 species of morning glory plants spread across different families with flowers in different shades and colors. Among those varieties, Heavenly Blue is the most popular and easily available variety.

From early summer to fall, morning glory ‘Heavenly Blue’ blooms continually and produces new blossoms every day. Even though the life of the flowers is very short (just morning to afternoon), their charms in an overhead trellis cannot be matched by other plants easily.

Under proper conditions, they can reach up to a height of 10ft (3m) and cannot tolerate temperatures below 45⁰F (7⁰C). Also, the seeds of these blue flower vines are quite dangerous to pets and humans.

Morning Glory is one of the very few flowering vines that is hardy in the majority of the zones. Pretty much, anyone can grow this beauty in their gardens.

• Scientific Name: Ipomoea tricolor
• Other Name(s): Grannyvine ‘Blue Vine’
• Origin: Mexico & Central America
• Plant Type: Annual
• Plant Family: Ipomoea
• Flowering Season: Early Summer to fall
• Fragrance: Yes
• Light Exposure: Full Sun
• Maintenance: Easy & Beginner friendly
• Watering: Average
• USDA Hardiness Zone: 2-12

2. Blue Trumpet Vine

Blue trumpet vine is a fast-growing twining evergreen vine with heart-shaped bright green large leaves. It produces beautiful trumpet-shaped blue flowers during spring, summer, and fall.

The color of the flowers is not proper blue, but a darker shade of lavender. With little assistance, this blue flower vine can reach heights of more than 30 feet in frost-free regions. However, in other regions, it is grown as annuals and will reach a maximum height of 6-8ft in one season before dying.

As it grows large, this plant requires a strong support system to maintain its spread. When small, hanging baskets and pots work well, but as it grows it needs trellises, fences, or walls.

• Scientific Name: Thunbergia grandiflora
• Other Name(s): Bengal Clock Vine, Blue Skyflower, Sky Vine
• Origin: India
• Plant Type: Annual
• Plant Family: Acanthaceae
• Flowering Season: Spring, Summer & Fall
• Fragrance: Yes
• Light Exposure: Full Sun
• Maintenance: Low & Beginner friendly
• Watering: High
• USDA Hardiness Zone: 10-11

3. Common Passion Flower

Passiflora caerulea, also known as the common passion flower is an evergreen (or semi-evergreen), fast-growing, woody-based tendril climbing plant. 

During summer and early fall, this plant produces white flowers (sometimes with a pink shade) with blue or purple color crowns. Even though the overall color of the plant is not blue, the blue crown is the most attractive part of this plant which makes them a genuine blue flower vine.

This perennial vine is capable of reaching a height of up to 30ft (10m) under proper conditions. Even though the fruit of this plant is edible, the roots and leaves are completely toxic for both humans and pets.

• Scientific Name: Passiflora caerulea
• Other Name(s): Blue Crown, Blue Passion Flower, Wild Apricot
• Origin: Brazil & Argentina
• Plant Type: Perennial
• Plant Family: Passiflora
• Flowering Season: Summer & fall
• Fragrance: No
• Light Exposure: Full Sun/Partial Sun
• Maintenance: Low, Average
• Watering: Medium
• USDA Hardiness Zone: 6-9

4. Cape Leadwort

Plumbago auriculata, commonly known as cape leadwort is a South African native quick-growing, broadleaf evergreen perennial scrambling climber. It produces very attractive trusses of pale blue flowers from summer to early winter. In some regions, it produces flowers throughout the year.

Just like the previous plant, this one is also pretty a small vine. They can reach a maximum of 3-4ft in both heights and spread.

• Scientific Name: Plumbago auriculate
• Other Name(s): Cape Leadwort, Cape Plumbago
• Origin: South Affrica
• Plant Type: Perennial
• Plant Family: Plumbaginaceae
• Flowering Season: All year
• Fragrance: No
• Light Exposure: Full Sun/Part Shade
• Maintenance: Low & Beginner friendly
• Watering: Medium
• USDA Hardiness Zone: 8-11

5. Bonnet Bellflower

Grey-Wilson Bonnet Bellflower is a herbaceous twining climber that features 1-2” (5cm) long leaves. These leaves are either lance-shaped or ovate-shaped. It produces very bright fragrant blueish-violet single flowers from summer to early fall. 

This blue flower vine can reach a maximum height of 4-6ft (2m) if it gets the right growing conditions. It grows well in both full sun and partial shade, however, the best display of flowers is seen in full sun.

• Scientific Name: Pseudocodon convolvulacea
• Other Name(s): Pseudocodon Grey-wilsonii
• Origin: East Asia
• Plant Type: Perennials
• Plant Family: Campanulaceae
• Flowering Season: Summer & Early Fall
• Fragrance: Yes
• Light Exposure: Full Sun/Partial Shade
• Maintenance: Medium
• Watering: Average
• USDA Hardiness Zone: 7-11

6. Italian Jasmine

Solanum seaforthianum, commonly known as Italian Jasmine is an evergreen, aggressive woody-stemmed, scrambling climber based out of tropical regions of South America. It is typically grown as an ornamental vine in most parts of the world.

In hot and humid conditions, this vine normally reaches a height of 20ft (6m) and bears suspended clusters of nodding bluish-purple flowers (sometimes pinkish white) with contrasting yellow anthers that bloom in the summer on stems covered in broad, elliptic, deep green leaves that range in length from 4 to 8 inches.

These flowers are followed by small showy berries which mature to scarlet red. Also, all parts of this blue flower vine are toxic to both humans and pets.

• Scientific Name: Solanum seaforthianum
• Other Name(s): Brazilian Nightshade, St. Vincent Lilac
• Origin: South America
• Plant Type: Perennial
• Plant Family: Solanaceae
• Flowering Season: July to August
• Fragrance: Yes
• Light Exposure: Full Sun/Part Shade
• Maintenance: Medium
• Watering: Medium
• USDA Hardiness Zone: 11-12

7. Bluebell Creeper

Bluebell Creeper is a woody-based evergreen twining perennial climber with ovate and lance-shaped leaves. Typically, the leaves are very narrow with lengths ranging from 3 to 6 cm.

From spring to fall, they bloom clusters of sky-blue flowers. A typical cluster will have a minimum of 4 and a maximum of 9 flowers.

This blue flower vine is pretty invasive and is banned in many regions. If you like the plant, check with your local regulators before growing them in the garden.

• Scientific Name: Billardiera heterophylla
• Other Name(s): Bluebell Creeper
• Origin: Australia
• Plant Type: Perennial
• Plant Family: Pittosporaceae
• Flowering Season: Spring & Summer
• Fragrance: No
• Light Exposure: Full/Partial Sun
• Maintenance: Low
• Watering: Medium
• USDA Hardiness Zone: 10-11

8. Bush Clock Vine

Bush Clock Vine, scientifically known as Thunbergia erecta is an African-based woody-based shrub that is also considered to be a vine because of its twining nature.

It has small dark green leaves in an ovate shape. Compared to many other plants in this list of blue flower vines, the bush clock vine is not tall. It can grow only up to 4-6ft (1.2-1.8m) tall. However, they can spread up to 8 ft (2.4m).

Throughout summer and fall, this plant puts out dark blue to purple flowers that are quite fragrant and velvety. These flowers are quite small as well (2.5cm).

• Scientific Name: Thunbergia erecta
• Other Name(s): Bush Clock Vine, Sweet Clock Vine, King’s Mantle
• Origin: Western Africa
• Plant Type: Perennial
• Plant Family: Acanthaceae
• Flowering Season: Summer & fall
• Fragrance: Yes
• Light Exposure: Full/Partial Sun
• Maintenance: Easy & Beginner-friendly
• Watering: Average
• USDA Hardiness Zone: 10-11

Sources

To back up the information we provide in our articles, the Plantials team only uses high-quality sources published in peer-reviewed university or scientific research journals.

1. Encyclopedia of Plants & Flowers, Book From The Royal Horticultural Society
2. Missouri Botanical Garden Plant Finder
3. Gardenia Plant Finder
4. Plant Database, Gardening With Agnus