previous
  • Fast-Growing Trees for Impatient Gardeners
    Fast-Growing Trees for Impatient Gardeners
  • Plants that Spark!
    Plants that Spark!
  • Garden Confidential: A Plant Walks into a Bar
    Garden Confidential: A Plant Walks into a Bar
  • Homegrown / Homemade
    Homegrown / Homemade
  • Designing with Curved Terraces
    Designing with Curved Terraces
  • Comfortable Alfresco Dining
    Comfortable Alfresco Dining
  • Elephant's Ears
    Elephant's Ears
  • Lawn Alternatives
    Lawn Alternatives
  • Make a Succulent Topiary
    Make a Succulent Topiary
  • In Pursuit of the Perfect Potting Shed
    In Pursuit of the Perfect Potting Shed
  • Pretty in Pink
    Pretty in Pink
  • Save Money by Growing Your Own
    Save Money by Growing Your Own
  • Fragrant Plants for Pathways
    Fragrant Plants for Pathways
  • NEW Video Series: There's a Better Way
    NEW Video Series: There's a Better Way
  • Indeterminate or Determinate Tomatoes?
    Indeterminate or Determinate Tomatoes?
  • Thoughts From a Foreign Field
    Thoughts From a Foreign Field
  • Slideshow: Beautiful Clematis
    Slideshow: Beautiful Clematis
  • 6 Tips for Weed Control
    6 Tips for Weed Control
  • Dwarf Citrus Trees
    Dwarf Citrus Trees
  • Plant an Easy-to-Water Strawberry Jar
    Plant an Easy-to-Water Strawberry Jar
  • Containers as Focal Points
    Containers as Focal Points
  • Building a Compost Bin
    Building a Compost Bin
  • Stylish Shady Containers
    Stylish Shady Containers
  • Mulch for a Healthy Garden
    Mulch for a Healthy Garden
  • Colorful Selections for Shade
    Colorful Selections for Shade
next

Browse Plants

Narrowed By:Zone: 10+ Characteristics: Attracts Butterflies+ Flower Color: Blue
Displaying 1 - 14 of 14 listings   Sort By: Sort
Agastache ‘Blue Fortune’ Agastache ‘Blue Fortune’
(Blue Fortune hyssop)
(2 user reviews)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

'Blue Fortune' produces spikes of powder-blue flowers held over large, deep green foliage. The plant stands approximately 36 inches tall with a mature width of 18 inches. Peak bloom occurs in midsummer when butterflies are plentiful.

Ageratum houstonianum Ageratum houstonianum
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

There are many cultivars available of this fast-growing annual. They are best used as bedding, edging, or container plants. Panicles of blue, pink, purple, or white flowerheads arise from oval, downy leaves in midsummer and continue until frost. They have a soft, fuzzy appearance and attract butterflies.

Heliotropium arborescens cvs. Heliotropium arborescens cvs.
(Heliotrope, Cherry pie)
Be the first to rate this plant
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Heliotrope has a compact form with broadly oval to lance-shaped, wrinkled leaves tinged with purple. In summer, it bears a profusion of deep violet-blue or lavender-blue flowerheads up to 6 inches across. Cultivars vary in height as well as bloom fragrance and color.

Nepeta × faassenii 'Walker's Low' Nepeta × faassenii 'Walker's Low'
(Catmint)
(11 user reviews)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This mound of lavender-blue flowers and aromatic, grayish green leaves up to 2 feet tall and 3 feet wide is great as edging or in a border, herb, or rock garden. It is an easy to grow, prolific bloomer that seems to be deer resistant. It blooms the whole summer and tolerates some shade. It also looks great with roses or on walls.

Ruellia brittoniana 'Purple Showers' Ruellia brittoniana 'Purple Showers'
(Mexican petunia, Common ruellia, Wild petunia)
(7 user reviews)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This three-foot-tall evergreen shrub bears many tubular, blue or purple, petunia-like flowers on dark stems over a long period. Each flower lasts for just one day. It is a fast grower that may self-seed aggressively. Use in a border, container, or at waterside. Can be grown as an annual in cooler areas.

no image available Salvia 'Mystic Spires Blue'
Be the first to rate this plant
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Throughout the summer, 'Mystic Spires Blue' produces long stalks of dark blue flowers, which continue to reward in abundance when deadheaded. Refresh tired plants in midsummer by cutting them back by half. This cultivar makes an excellent bedding or container plant.

Salvia chamaedryoides Salvia chamaedryoides
(Germander sage, Mexican blue sage)
(2 user reviews)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This choice species boasts narrow, downy sage-green leaves and true sky-blue blossoms from summer to fall. It has woody stems and forms a beautiful specimen 12 inches tall by 18 inches wide.

Salvia farinacea Salvia farinacea
(Mealycup sage)
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This perennial forms a shrubby upright clump 2 feet tall by 1 foot wide, with white mealy stems and glossy green leaves. It bears deep, lavender-blue flowers on tall spikes from early summer to frost. Salvias are some of the showiest plants for containers, annual borders, and mixed borders. Butterflies and hummingbirds love them. 

Salvia farinacea 'Victoria' Salvia farinacea 'Victoria'
(Mealycup sage)
Be the first to rate this plant
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This compact perennial forms a bush less than 1.5eet tall by 1 foot wide, with indigo stems and glossy green leaves. It bears deep, navy blue flowers on medium spikes from early summer to frost.

Salvia guaranitica Salvia guaranitica
(2 user reviews)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This perennial produces long spires of large, deep blue flowers from mid-summer to frost. It forms a tall bush 6 feet tall by 2 feet wide that is great for the back of the border. It is drought tolerant because of its unusual, moisture-conserving rhizomes.

Salvia mexicana 'Limelight' Salvia mexicana 'Limelight'
Be the first to rate this plant
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This unusual tender perennial displays an electric color combination when its vibrant purple-blue flowers open from bright chartreuse calyces.  Fortunately, glossy, bright green leaves hold their own until the show gets started in August (and continues until frost). It forms a tall bush, 6 feet tall by 6 feet wide, which is great for the back of the border. Salvias are some of the showiest plants for containers, annual borders, and mixed borders. Butterflies and hummingbirds love them. 

Salvia uliginosa Salvia uliginosa
(Bog sage)
Be the first to rate this plant
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This moisture-loving perennial produces clear blue flowers with white highlights in late summer to mid-autumn. It forms an airy clump to 6 feet tall by 3 feet wide, and is great for the back of a border. It is tolerant of heavy soils.

Stachytarpheta urticifolia Stachytarpheta urticifolia
(Blue porter weed, Blue rat's tail, Nettleleaf velvetberry)
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This pest-free perennial blooms best during warm months. It is strange how these small blue flowers attract butterflies more than large-blooming, showy neighbors. Blue porter weed gradually reseeds nearby for a fresh batch of new plants. Mix with other species of Stachytarpheta for a variety of leaf shapes and colors ranging from purple to coral.

Trachelium caeruleum Trachelium caeruleum
(Blue throatwort)
Be the first to rate this plant
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This species bears dome-shaped flower heads several inches across that are crowded with tiny, tubular amethyst or white flowers that look somewhat like the blooms of an allium. It has lance-shaped, toothed leaves in hues of cordovan purple or deep green brushed with plum highlights. It blooms over a long season. Though it is a perennial, blue throatwort performs wonderfully as an annual and blooms summer to fall. Plants grow to about 3 feet tall and wide.


Displaying 1 - 14 of 14 listings   Sort By: Sort