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Browse Plants

Narrowed By:Type: Annuals, Grasses+ Flower Color: Blue, Green
Displaying 1 - 20 of 30 listings   1 | 2View AllNext > Sort By: Sort
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.

Ageratum houstonianum 'Blue Danube' Ageratum houstonianum 'Blue Danube'
('Blue Danube' ageratum, 'Blue Danube' floss flower)
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This early, compact bloomer grows to only about 6 or 7 inches tall. With its icy blue-purple flowers, it works well when planted tightly along the foreground of a bed. Its color blends easily with most other hues and textures. -Julia Jones, Designing with annueals, Fine Gardening issue #120

Amaranthus tricolor and cvs. Amaranthus tricolor and cvs.
(Chinese spinach, Tampala, Joseph's coat)
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This hardy annual has vibrant, ornamental red, yellow, and green foliage that lends a tropical effect to the garden. Small flowers, borne from summer to early autumn, are inconspicuous in comparison to the effect of the foliage. Cultivars feature yellow and maroon-shaded leaves, but the species still offers the showiest foliage.

Borago officinalis Borago officinalis
(Borage, Cool-tankard, Talewort)
(1 user review)

These fast-growing plants with succulent, bristly stems are old-fashioned favorites of the border or herb garden. They self sow to produce a succession throughout the season of new plants and blossoms. The beautiful flowers are edible and are particularly bequiling on salad or floating in summer drinks. 

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

This plant produces distinct, 2-inch blossoms primarily in rich blue (but also in shades of purple and white), with dark eyes smudged white. It is suitable for sun and partial shade.

Carex siderosticha 'Variegata' Carex siderosticha 'Variegata'
(Broad-leaf sedge)
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This sedge's pearly, straplike leaves resemble striped ribbon waiting to be wrapped around a package. It sports fuzzy green flowers with green stamens in late spring. Grow as an edging or groundcover.

Centaurea cyanus Centaurea cyanus
(Bachelor's buttons, Bluebottle, Cornflower)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Bachelor's buttons bear charming and prolific flowers in hues of blue, pink, lavender, white, and maroon. Those with a true blue color are especially welcome in the garden as that color is rare in nature. Each disc-shaped flower is about 1.5 inches across, with ragged petals radiating out from the center.

Chasmanthium latifolium Chasmanthium latifolium
(Northern sea oats, Spangle grass, Wild oats)
(2 user reviews)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Northern sea oats is a loosely tufted, clump-forming grass with lance-shaped, arching mid-green foliage that turns yellow in winter. Summer brings highly decorative oat-like panicles of flat, green flowerheads that shimmer and rustle in the wind, aging to bronze by late summer.

Corydalis linstowiana Corydalis linstowiana
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This species produces copious purplish-blue flowers in spring and fall. It has light green ferny leaves with a mid-rib of silver.

Cyperus papyrus King Tut® Cyperus papyrus King Tut®
(King Tut® papyrus)
(2 user reviews)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

This exotic-looking beauty has a fantastic bold form and strong appeal. Its pendulous leaves sit on tall, upright stems. King Tut® is a rapid grower that makes an impressive centerpiece in the landscape. It likes wet places like water gardens or waterside and is perfect for containers without drainage holes. This papyrus is easy to grow and untroubled by pests or diseases.

Delphinium 'Bluebird' Delphinium 'Bluebird'
(3 user reviews)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

'Blue Bird' is a Pacific Hybrid delphinium grown as an annual or biennial. Its mid-blue flowers have white centers. The flowers are large but short-lived and bloom on tall stems from early summer to midsummer. Grow at the back of a border or in the middle of an island bed. There is nothing quite like delphiniums in the garden.

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

This plant has densely tufted, spreading clumps of strap-like, flowing foliage. Pale blue-gray leaves arch loosely. In summer, it produces stiff, upright, blue-gray spikes of flowers that turn buff.

Evolvus Blue My Mind™ Evolvus Blue My Mind™
(Blue My Mind™ evolvus)
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Blue is hard to get one's hands on in the garden, but Blue My Mind™ evolvus fills the void! This heat-tolerant beauty makes a stunning addition to containers beds alike, and it's so polite that it doesn't even need deadheading.

Festuca glauca 'Boulder Blue' Festuca glauca 'Boulder Blue'
(Blue fescue, Gray fescue)
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Regarded by some as the bluest blue fescue, this plant forms compact, cascading mounds of foot-tall, intensely blue, narrow leaves that are attractive in all seasons. Blooms are generally secondary to the foliage, but this cultivar blooms more heavily than most, with spikelets in summer. This cultivar is long-lived and very hardy. Grow in groups in a border or rock garden, or as a groundcover. 

Festuca glauca 'Elijah Blue' Festuca glauca 'Elijah Blue'
(Blue fescue, Gray fescue)
(1 user review)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

These compact tufts of 8-inch-long powder-blue leaves are well suited for edging and naturalizing in the rock garden. 

Hakonechloa macra 'Aureola’ Hakonechloa macra 'Aureola’
(Golden Japanese forest grass)
(2 user reviews)
Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Brightly variegated golden foliage with green stripes near the leaf margins give this Japanese forest grass its distinctive look. Too much shade can cause the golden portion to fade to lime green. This slow-growing may not reach a mature size for three years, but it is definitely worth the wait. -Matt Griswold, Regional Picks: Northeast, Fine Gardening issue #127

Heliotropium arborescens cvs. Heliotropium arborescens cvs.
(Heliotrope, Cherry pie)
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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.

Lathyrus odoratus and cvs. Lathyrus odoratus and cvs.
(Sweet pea)
(1 user review)

This annual climber has winged stems and deliciously fragrant, ruffled blossoms. Many cultivars exist with varying bloom color (solid, mixed, or bicolor), size, and climbing habit.

Lobelia Techno® Blue Lobelia Techno® Blue
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Hardiness Zones: 1 2 3 4 5 6 7 8 9 10 11

Unlike most trailing lobelias, this cultivar does not falter in hot temperatures. Techno® Blue is covered in intense, cobalt blue flowers. Its semitrailing, mounding habit is a great addition to containers and hanging baskets.

Nicotiana alata 'Lime Green' Nicotiana alata 'Lime Green'
(Flowering tobacco)
(2 user reviews)

The yellow-green trumpet-shaped flowers of 'Lime Green' flowering tobacco mix well with many other colors in the garden. Growing to 2 or 3 feet tall, this annual's flowers attract hummingbirds and are fragrant at night.


Displaying 1 - 20 of 30 listings   1 | 2View AllNext > Sort By: Sort