30 Weeds with Blue Flowers

Raul is an Editor at BalconyGardenWeb and an expert in flower and herb cultivation based in Phoenix, Arizona. A frequent speaker at horticultural events, he is also an active contributor to Facebook flower groups. Holding an MBA degree, Raul blends his gardening skills with strong leadership and analytical abilities.
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Check the list of Weeds with Blue Flowers! They might sound like invasive plants but they do have some beautiful blooms!

Though they might sound like an invasive specimens at first, but these Weeds with Blue Flowers can be a standout addition in garden and pots! Read ahead!

Weeds with Blue Flowers

Some of the plants on this list may have a mix of purple-blue and might not have entirely blue flowers.

1. Blue Oxalis

Weeds with Blue Flowers 1

Botanical Name: Parochetus communis

These Weeds with Blue Flowers stays alive for many years. The blooms of the plant match really well with the light green foliage.

2. Chicory

best Weeds with Blue Flowers

Botanical Name: Cichorium intybus

Chicory are Weeds with Blue Flowers that originally comes from Europe. The plant usually grows between three to five feet tall. Its leaves resemble dandelion.

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3. Columbine Aquilegia

Amazing Weeds with Blue Flowers 3

Botanical Name: Aquilegia vulgaris

Columbine has slightly hairy stems and long, floppy flowers. These flowers come back year after year, but some gardeners treat them as plants that live for two years.

4. Bush Vetch

top Weeds with Blue Flowers

Botanical Name: Vicia sepium

Bush vetch is a beautiful climbing plant with small, deep blue or purple flowers. It comes from Asia and Europe but can also be found in North America.

5. CarpetweedTop best Weeds with Blue Flowers

Botanical Name: Ajuga pyramidalis

Carpetweed is a usual weed that grows quickly and covers the ground fast. You can use common weed killers to control it. It looks great in gardens, lawns, and landscapes.

6. Creeping Bellflower

Lovely Weeds with Blue Flowers

Botanical Name: Campanula rapunculoides

Creeping bellflower is a plant with bell-shaped flowers that bloom in the summer. These Weeds with Blue Flowers spread fast and can take over other plants in no time.

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7. Forget-Me-Not

Weeds with Blue Flowers in garden

Botanical Name: Myosotis scorpioides

Forget-me-not is a small very light blue-white flower with five petals and a yellow center. These medium-sized weeds with tiny blue blooms grow in wet, shaded places.

8. Asiatic Dayflower

Weeds with Blue Flowers best garden ideas

Botanical Name: Commelina communis

The Asiatic dayflower has broad, thin leaves and beautiful blue flowers. The leaves have pointy tips, with two big blue petals on top and one white petal underneath.

9. Common Blue Violet

beautiful Weeds with Blue Flowers 9

Botanical Name: Viola sororia

The common blue violet is a short plant found in gardens, fields, paths, and forests. Its pretty bluish-purple flowers bloom in spring from April to June.

10. Slender Speedwell

Weeds with Blue Flowers in yard

Botanical Name: Veronica filiformis

Slender Speedwell is a beautiful weed that comes back every year. These Weeds with Blue Flowers originally came from Asia and Europe.

11. Henbit

Weeds with Blue Flowers 11

Botanical Name: Lamium amplexicaule

Henbit is a pretty weed that has purplish-to-blue colors. It grows in the cold autumn or winter months. Originally from Asia and Europe, it is now common in North America too.

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12. Creeping Charlie

Weeds with Blue Flowers in backyard

Botanical Name: Glechoma hederacea

Creeping Charlie is a blue weed that has been in the US for a long time. It grows near the ground and has bright green leaves with wavy edges.

13. Germander Speedwell

Weeds with Blue Flowers

Botanical Name: Veronica chamaedrys

It is a small plant that hugs the ground and has blue or violet flowers. Each flower has four petals evenly arranged around the center.

14. Tiny Bluets

Weeds with Blue Flowers in garden

Botanical Name: Houstonia pusilla

These Weeds with Blue Flowers have five petals and can be white or blue in color. These flowers have leaves that grow opposite each other.

15. Siberian Squill

best Weeds with Blue Flowers

Botanical Name: Scilla siberica

Siberian squill is a lovely blue weed that appears in your garden in early spring. It blooms early in the spring and adds beauty to the surroundings.

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16. Bugloss

top Weeds with Blue Flowers

Botanical Name: Anchusa azurea

Anchusa azurea, or Italian Bugloss has pretty blue flowers that look like forget-me-nots. It grows on tall stems with big green leaves and blooms a lot in late spring to early summer.

17. Viper’s Bugloss

top best Weeds with Blue Flowers

Botanical Name: Echium vulgare

Echium vulgare, or Viper’s Bugloss is a plant with tall spikes of bright blue or purple flowers. It attracts bees and blooms during spring and summer.

18. Purple Deadnettle

Amazing Weeds with Blue Flowers

Botanical Name: Lamium purpureum

Originating from Europe and Asia, these Weeds with Blue Flowers display blooms consistently throughout the year, including in the warmer winter months.

19. Selfheal

lovely Weeds with Blue Flowers 19

Botanical Name: Prunella vulgaris

Prunella vulgaris, common as Self-Heal, is a small herb with purple flowers, often considered a weed. It grows in grassy areas and blooms in spring and summer.

20. Lungwort

Weeds with Blue FlowersBotanical Name: Pulmonaria spp.

Lungwort has pretty flowers that change color as they age, usually in shades of pink and blue. This plant is common in gardens and woodlands, adding beauty to spring landscapes.

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21. Field Scabious

Weeds with Blue Flowers in yard

Botanical Name: Knautia arvensis

Field Scabious is a wildflower with lavender or blue flowers that resemble pincushions. It grows in fields and meadows, attracting butterflies and bees.

22. Blue Dicks

Weeds with Blue Flowers in backyard

Botanical Name: Dichelostemma capitatum

These Weeds with Blue Flowers bloom in spring and thrive in grassy areas or open woodlands. These flowers contribute to the beauty of natural surroundings.

23. Mountain Violet

Weeds with Blue Flowers in backyardBotanical Name: Viola calcarata

Mountain Violet is a small plant with delicate purple or blue flowers. It grows in mountainous regions and blooms in spring.

24. Common Bluebell

best Weeds with Blue FlowersBotanical Name: Hyacinthoides non-scripta

Common Bluebell blooms in woodlands and meadows during spring. These Weeds with Blue Flowers create colorful carpets beneath trees and in grassy areas.

25. Greater Periwinkle

top Weeds with Blue Flowers

Botanical Name: Vinca major

Greater Periwinkle is a trailing plant with glossy green leaves and purple-blue flowers. It grows in gardens and can spread to cover the ground.

26. Salvia lyrata

Top best Weeds with Blue FlowersBotanical Name: Lyreleaf sage

Salvia lyrata, also known as Lyreleaf Sage, is a plant with unique, lyre-shaped leaves and spikes of purple or blue flowers. It thrives in open areas and blooms in spring.

27. Pickerelweed

Weeds with Blue Flowers 27

Botanical Name: Pontederia cordata

Pickerelweed is a water-loving plant with large green leaves and spikes of blue-purple flowers. It grows near ponds and marshes, attracting insects and birds.

28. Sheep’s Bit

Amazing Weeds with Blue Flowers

Botanical Name: Jasione montana

Sheep’s Bit is a wildflower with round clusters of small blue or purple flowers. These Weeds with Blue Flowers blooms in grasslands and meadows during summer.

29. Skullcap

beautiful Weeds with Blue Flowers

Botanical Name: Scutellaria spp.

Skullcap displays tiny, tube-like flowers ranging from blue to purple. It grows in sunny areas and is known for its calming properties.

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30. Wild Heliotrope

Weeds with Blue Flowers

Botanical Name: Phacelia distans

Wild Heliotrope displays clusters of small purple flowers. These Weeds with Blue Flowers bring a touch of purple beauty to various outdoor settings.

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