15 Groundcover Plants With Blue Flowers

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Groundcover plants, typically small in size, are ideal for blending in with taller perennials and shrubs in flowerbeds. They will save you from having empty, bare spaces between your plants, or you can use them to create vibrant, one-of-a-kind flowery carpets in your garden.

The colorful blossoms of groundcover plants can add a refreshing touch of color to your garden.

In the spring, their bright blue blossoms are a cheery sign that winter is at an end, while at the height of summer, they stand out vividly against the surrounding greenery.

Keep reading if you’re interested in a beautiful blue groundcover for your garden!

Table of Contents

15 Types of Groundcover Plants With Blue Flowers

	Name	Months in bloom	Height	Light	Color
1	Blue Star Creeper	May to August	2” – 15″	From partial to full sunlight	Pastel blue
2	Grape Hyacinth	April to May	6″	From partial to full sunlight	Blue, purple, white, yellow
3	Catnip	June to October	1” – 3″	From partial to full sunlight	Blue, purple, pink, white
4	Spanish Bluebells	April to May	6” – 12”	From partial to full sunlight	Blue, pink, white
5	Siberian Bugloss	April to June	1” – 2″	From shade to partial sun	Light blue, white
6	Clematis ‘Arabella’	June to September	3’ – 5’	Full sunlight	From purple to pastel blue with a hint of lilac-pink
7	Periwinkle	April to May	6” – 12”	Sun, shade, and partial sun	Blue, purple, white
8	Dwarf Plumbago	July to September	9″ – 1″	From partial to full sunlight	Intense blue
9	Geranium	June to September	1’ – 2’	From partial to full sunlight	Violet – blue
10	*Lithodora diffusa*	April to May	6” – 1’	From partial to full sunlight	Light blue, blue, purple
11	*Ajuga reptans*	May to June	3” – 6”	From shade to partial sun	Violet – blue
12	Stemless gentian	May to June	4” – 6”	From partial to full sunlight	Cobalt blue
13	Germander speedwell	March to July	6” – 12”	From partial to full sunlight	Blue
14	Persian Speedwell	June to September	2″ -12″	From partial to full sunlight	Light blue
15	Campanula cochleariifolia ‘Jingle Blue‘	June to August	3” – 6”	From partial to full sunlight	Violet – blue

15 Beautiful Groundcover Plants With Blue Flowers

Blue Star Creeper (Isotoma fluviatilis)

Blue Star Creeper is a fantastic, long-lasting groundcover with pretty little blooms.

It grows through a network of underground root systems that branch out wildly and are tricky to control. Therefore, it is best to place Blue Star where it will not interfere with other plants.

Its flowers are a delicate pastel blue, and when they bloom, they form a dense carpet. Gorgeous, star-shaped flowers will appear from the end of May through August.

The elegant, bright green leaves of Blue Star Creeper make it just as attractive even when it is not in bloom. So, it works as a good enough lawn in hard-to-grow places.

Blue Star prefers sunny or partially shaded locations. It blooms best when exposed to direct sunlight but will need more water as a result.

Grape Hyacinth (Muscari sp.)

Grape hyacinths are bulb plants that remain in the ground through the winter and bloom in the spring.

Characterized by their stunning clusters and strong blue color, Grape hyacinths are often found in parks and gardens.

They create a brilliant sea of breathtaking blue flowers when fully in bloom. They take little care and will thrive in almost any soil, preferably in sunny settings.

Grape hyacinths can be used as edging plants or in neat rows to improve the appearance of walkways and flower beds. It’s also fine to plant them at the base of trees that lose their leaves through the winter.

My favorite Grape hyacinths are Muscari aucheri ‘Mount Hood,’ Muscari azureum, and Muscari neglectum ‘Baby’s Breath.’ I always look forward to seeing their sweet baby blue flowers at the start of spring.

Catnip or Catmint (Nepeta sp.)

Species of the genus Nepeta, commonly known as catnip or catmint, are very hardy perennials that have never given me any trouble in my garden. I have hundreds of them, and they thrive in both direct sunlight and partial shade. They only require moderately fertile soil, as long as it drains correctly.

Flowering starts in early June and, with proper pruning, can continue until the first frost.

Catnip plants, especially ‘Walker’s Low’ and other low-growing species, can be used to create lovely borders for gardens. Filling in the spaces between larger flowers in the middle of a flower bed is where the ‘Six Hills Giant’ variety really shines.

Bees and butterflies love catnip, and you can always hear them buzzing around it.

Spanish Bluebells (Hyacinthoides hispanica)

Honey bee is flying to collect pollen from Spanish bluebell flowers

Spanish Bluebell is a perennial herbaceous bulb plant with stunning lavender-blue bell-shaped blooms.

They thrive in garden beds or rock gardens and bloom in full or partial sun.

Flowers appear in the late spring, and each bulb produces several flower scapes that spread quickly.

Siberian Bugloss (Brunnera macrophylla)

The bright blue flowers of Brunnera macrophylla also known as Siberian Bugloss

Brunnera is often used under trees, larger shrubs, and other shaded areas. Its blue blossoms are strikingly similar to those of the forget-me-not.

With its thick clumps of heart-shaped, bicolored leaves, Brunnera is one of the most beautiful leafy ornamental perennials.

Two of my favorite Brunneras are ‘Jack Frost’ and ‘Silver Heart’ due to their shimmering silver leaves. Their stunning foliage will shine a light even into the darkest corners of the garden.

Brunnera will grow nicely in places with partial shade and moist but not soggy soil.

Clematis ‘Arabella’ (Integrifolia Group)

Using Clematis as a groundcover plant is unusual, but it’s worth exploring because of its unique and stunning carpet of leaves and blooms.

Some varieties of Clematis are designed to sprawl out on the ground. These Clematis vines in the C. integrifolia species can grow without trellises or other supports when used as groundcover.

Of course, not all Clematis suit groundcover. Many of them are actually classic vines. But, if you choose the right type, you will achieve a look that may pleasantly surprise you.

A perfect example of a groundcover Clematis that blooms all summer is the ‘Arabella’ variety. Initially purple, the blossoms gradually change to a pastel blue with a hint of lilac pink.

It is charming when grown among other plants and is a unique addition to a rose, rustic, or romantic garden.

Clematis ‘Arabella’ is resistant and easy to grow. It likes sunny places, fertile, permeable soils, and neutral or slightly alkaline ph.

Periwinkle (Vinca minor)

Beautiful purple blue flowers of vinca on background of green leaves

Periwinkle is one of the rare plants that thrives nicely in deep shadows. It is ideal for filling up empty spaces between trees and shrubs.

Periwinkles can create dense, dark green carpets in garden areas where grass or other plants struggle to grow.

It’s a garden superhero that’s easy to cultivate, requires little in terms of soil and location, and is frost-hardy.

It has lovely purple-blue flower buds that open widely in April and continue to appear until the end of summer. Periwinkle is an evergreen, so it looks great right up into winter.

Dwarf Plumbago (Ceratostigma plumbaginoides)

Ceratostigma plumbaginoides a summer autumn flower plant

Dwarf plumbago is an intriguing perennial that blooms with striking cobalt blue flowers in the late summer and fall.

Dwarf plumbago is notable for its late flowering time and visual features, intense color of blooms, and scarlet foliage in fall.

It spreads quickly via rhizomes and forms eye-catching carpets. It is drought-tolerant and grows well in ordinary garden soils that are well-drained and slightly calcareous.

It prefers sunny places but should tolerate moderate shade. It is frost-tolerant, although it is best to cover it during harsh winters.

Geranium (Geranium hybridum)

The geranium has become a master of the background wherever it is planted, wrapping other plants in its beautiful blue-violet flowers.

I have many geraniums, but none can compete with ‘Rozanne’ in terms of flowering time. From June onwards, it never stops blooming until the first frost. It thrives in full sun or partial shade.

Geranium ‘Rozanne’ has received many prestigious awards in the horticultural industry and was crowned with the “Plants of the Century” title at the 100th anniversary of the Chelsea Flower Show.

Lithodora diffusa

Lithodora plant with small bright blue flowers is covering the garden slope

Lithodora diffusa is well-known for its brilliant blue flowers. From April to May, it blooms profusely.

This low-growing perennial ornament is an excellent choice as a garden groundcover.

Lithodora diffusa is a plant that grows well in rocky areas, perennial beds, and along borders.

It performs best in full sun, in a quiet place that is protected from the wind. The soil should be mostly moist, humus-rich, and well-drained.

The ‘Cambridge Blue’ and ‘Heavenly Blue’ varieties of Lithodora diffusa are, without a doubt, my personal favorites. Both of them are a gorgeous shade of blue, while ‘Cambridge Blue’ also has subtle white stripes.

Bugleweed (Ajuga reptans)

Beautiful blue bugle (Ajuga reptans) by the wall behind the tiles in the garden

Ajuga reptans, often known as Blue Bugle or bugleweed, is a low, creeping plant that quickly and tightly covers the area where it is planted.

This wonderful groundcover plant will thrive in any soil, even between stones, on slopes, in rockeries, or by walls.

Blue flowers appear in late May and early June. It is rapidly expanding and can be used to make beautiful garden carpets. It is also easy to control and can be kept in place with a little weeding every now and again.

I prefer planting it in more frequently used parts of the garden because it regenerates quite quickly, and you can count on pollinators to visit your garden often, as they adore Ajuga reptans flowers.

Stemless gentian (Gentiana acaulis)

Blue flowers of Gentiana acaulis (stemless gentian or trumpet gentian) among stones

Gentiana acaulis stands out in the garden thanks to its cobalt blue trumpet flowers.

Large, blue flowers that resemble bells bloom around the end of May and the beginning of June. It may rebloom again in late September or early October, but there is no guarantee.

Because the plant can’t handle being too wet or too dry, it needs to be always slightly damp using stony drainage.

Gentiana prefers full sun but will bloom well in moderate shade as well. It doesn’t require complicated care; simply remove faded inflorescences and divide clumps after spring flowering every 3–4 years to rejuvenate the plant.

Germander Speedwell (Veronica chamaedrys)

Closeup on the brlliant blue flowers of germander speedwell, Veronica chamaedrys

Germander Speedwell is a wonderful flowering plant that grows into gorgeous green carpets and blossoms from March to July.

During flowering, the tops of the shoots are covered with tiny, pretty blue flowers with white eyes.

It grows well in slightly moist or dry, well-drained soils in sunny, warm locations. It is very frost-resistant and easy to grow.

Persian Speedwell (Veronica persica)

Persian speedwell is an undemanding ground cover plant that prefers sunny, moderately moist, and fertile places.

Small, bright blue flowers with a white-yellow center appear singly in the leaf axils of Persian Speedwells throughout the growing season from June to September.

When the leafy stalk comes into contact with the ground, it can take root and give rise to a new generation, but it can also be grown from seeds.

Persian speedwell is an expansive plant that can be problematic in its rapid growth. The remarkable regenerative and adaptive skills this plant possesses make combating it a challenging affair. So, bring Persian speedwell into the garden only after considerable consideration.

‘Jingle Blue’ Bellflower (Campanula cochleariifolia ‘Jingle Blue‘)

Beautiful purple flower campanula cochleariifolia

The Bellflower “Jingle Blue” is a show-stopper due to its simple elegance and magnificent, excessive blossoming.

The Bellflower grows in clumps of small, light green, heart-shaped leaves. From June to August, ‘Jingle Blue’ shows off its full beauty.

Above the foliage, slightly drooping stems are decorated with delicate, blue-lilac flowers with charming bell-shaped blooms.

I highly recommend the ‘Jingle Blue’ variety because of its durability, number of blooms, and overall beauty. It prefers stony, dry soil and looks phenomenal on rockeries, borders, escarpments, or walls. Planted in larger groups, it creates impressive, blooming carpets.

Growing conditions for this bellflower should include good sunlight, well-drained soil, and a mildly alkaline pH. soil.

Final Thoughts

Among the blue-flowering ground cover plants, there are plants that prefer shade as well as those that grow in bright sunlight. Simply put, you have quite a selection to explore.

It is also important to note that the growth rates of ground cover plants vary from species to species. The most expansive ones can be planted on the edges of flowerbeds and lawns. Slower-growing species can be grown on a rockery or between path surface pieces.

When used to fill up empty spaces near the ground and between taller plants, ground-cover plants are a beautiful addition to a flowerbed arrangement.

Consider placing several varieties or species of assorted colors next to each other to create irregular, colorful patches.

Resources

Both my wife and I are gardening enthusiasts and we have many species of plants and vegetables in our garden. Some of the information in this article is from my own experience.