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Blue Echeveria

Echeveria derenbergii
Echeveria Derenbergii Echeveria Derenbergii Echeveria Derenbergii Echeveria Derenbergii Echeveria Derenbergii Echeveria Derenbergii Echeveria Derenbergii Echeveria Derenbergii Echeveria Derenbergii Echeveria Derenbergii Echeveria Derenbergii Echeveria Derenbergii
2 Cultivars/Varieties

Blue echium

Echium plantagineum
Form Form Flowers Flowers Rosette of leaves Rosette of leaves Back of flower Back of flower Close up of flower Close up of flower Hairy stem Hairy stem

Blue Eryngo

Eryngium planum
flower, summer, flower, summer, Flowers Flowers Flowers Flowers rosettes of broad leaves among rocks. rosettes of broad leaves among rocks. rosettes of broad leaves. rosettes of broad leaves. Small blue flowers in round heads surrounded by blue bracts. Small blue flowers in round heads surrounded by blue bracts.
4 Cultivars/Varieties

Blue Evergreen Hydrangea

Hydrangea febrifuga
Mature inflorescence with open and unopened flowers. Mature inflorescence with open and unopened flowers. Dichroa febrifuga Dichroa febrifuga Dichroa febrifuga Dichroa febrifuga 'Lady in Blue' flowers 'Lady in Blue' flowers Blue fruits, B.C., Canada Blue fruits, B.C., Canada
1 Cultivar/Variety

Blue-eyed African Daisy

Arctotis stoechadifolia
Flower Flower flower and form flower and form Flower Flower Flower Flower Flower Flower Flower Flower

Blue Eyed Daisy

Arctotis stoechadifolia
Flower Flower flower and form flower and form Flower Flower Flower Flower Flower Flower Flower Flower

Blue-eyed Grass

Sisyrinchium angustifolium
Sisyrinchium angustifolium Sisyrinchium angustifolium Sisyrinchium angustifolium Sisyrinchium angustifolium Sisyrinchium angustifolium Sisyrinchium angustifolium Sisyrinchium angustifolium Sisyrinchium angustifolium Sisyrinchium angustifolium Sisyrinchium angustifolium Sisyrinchium angustifolium Sisyrinchium angustifolium
1 Cultivar/Variety

Blue Eyes

Sisyrinchium angustifolium
Sisyrinchium angustifolium Sisyrinchium angustifolium Sisyrinchium angustifolium Sisyrinchium angustifolium Sisyrinchium angustifolium Sisyrinchium angustifolium Sisyrinchium angustifolium Sisyrinchium angustifolium Sisyrinchium angustifolium Sisyrinchium angustifolium Sisyrinchium angustifolium Sisyrinchium angustifolium
1 Cultivar/Variety

Blue False Indigo

Baptisia australis
Baptisia australis Baptisia australis Baptisia australis Baptisia australis Baptisia australis Baptisia australis Baptisia australis Baptisia australis Baptisia australis flower Baptisia australis flower Baptisia australis flower Baptisia australis flower
3 Cultivars/Varieties

Blue Felicia

Felicia amelloides
bushy groundcover with pale blue daisy "flowers" bushy groundcover with pale blue daisy "flowers" Pale blue daisy "flowers" Pale blue daisy "flowers"

Blue Fescue

Festuca arvernensis
Form in June in 15380 Le Falgoux, France Form in June in 15380 Le Falgoux, France Flowers in June in 15380 Le Falgoux, France Flowers in June in 15380 Le Falgoux, France Flower Closeup in June in 15380 Le Falgoux, France Flower Closeup in June in 15380 Le Falgoux, France Stems and seeds in April in Auvergne, France Stems and seeds in April in Auvergne, France Seedhead in September in 30570 Val-d'Aigoual, France Seedhead in September in 30570 Val-d'Aigoual, France

Blue Fescue

Festuca glauca
Form in September in Kursk Region, Russia Form in September in Kursk Region, Russia Seedhead in August in Breckenridge, Colorado Seedhead in August in Breckenridge, Colorado
2 Cultivars/Varieties

Blue Flax

Linum lewisii
Linum lewisii Linum lewisii

Blue Fleabane

Erigeron acris
leaves and flowers leaves and flowers leaves and flowers leaves and flowers leaves and flowers leaves and flowers leaves and flowers leaves and flowers Erigeron philadelphicus Erigeron philadelphicus Erigeron philadelphicus Erigeron philadelphicus

Blueflower Butterwort

Pinguicula caerulea
Pinguicula caerulea Pinguicula caerulea Close up of flower Close up of flower Side view of flower Side view of flower Basal leaves Basal leaves Leaf closeup Leaf closeup

Blue Forest Juniper

Juniperus horizontalis 'Blue Forest'
Juniperus horizontalis 'Blue Forest' Juniperus horizontalis 'Blue Forest' Juniperus horizontalis 'Blue Forest' Juniperus horizontalis 'Blue Forest' Juniperus horizontalis Juniperus horizontalis

Blue Freesias

Babiana nervosa
Babiana stricta Babiana stricta Flowers Flowers
5 Cultivars/Varieties

Bluefre European Plum

Prunus domestica 'Bluefire'

Bluefruit Dogwood

Cornus foemina
Cornus foemina Cornus foemina Cornus foemina Cornus foemina Cornus foemina Cornus foemina

Blue Gilia

Gilia capitata
Form Form Flower Flower Flower close up Flower close up Leaves and flowers Leaves and flowers Flower and stem Flower and stem Flower Flower

Blue Glory Bower

Rotheca myricoides 'Ugandense'
Rotheca myricoides ‘Ugandense’ Rotheca myricoides ‘Ugandense’ Rotheca myricoides ‘Ugandense’ Rotheca myricoides ‘Ugandense’

Blue Gramma

Bouteloua gracilis
mat of grassy turf in dry soil. mat of grassy turf in dry soil. base of grass clumb in dry soil. base of grass clumb in dry soil. Tall stalks bearing secund spikelets. Tall stalks bearing secund spikelets. Single dark purple secund spikelet. Single dark purple secund spikelet.

Blue Green Moor Grass

Sesleria heufleriana
Sesleria heufleriana Sesleria heufleriana

Blue Haw

Viburnum cassinoides
Form Form Flowers Flowers Leaves Leaves Fall color Fall color Fruit Fruit Stem Stem

Bluehead Gilia

Gilia capitata
Form Form Flower Flower Flower close up Flower close up Leaves and flowers Leaves and flowers Flower and stem Flower and stem Flower Flower

Blue-head Gily-flower

Gilia capitata
Form Form Flower Flower Flower close up Flower close up Leaves and flowers Leaves and flowers Flower and stem Flower and stem Flower Flower

Blue Heaven Juniper

Juniperus scopulorum 'Blue Heaven'
Juniperus scopulorum 'Blue Heaven' Juniperus scopulorum 'Blue Heaven' Juniperus scopulorum 'Blue Heaven' Juniperus scopulorum 'Blue Heaven' Juniperus scopulorum Juniperus scopulorum Juniperus scopulorum Juniperus scopulorum

Blue Himalayan Poppy

Papaver betonicifolium
Form Form Close up of flower. Close up of flower. Group planting Group planting

Blue Holly

Ilex x meserveae
Ilex x meserveae Ilex x meserveae Ilex x meserveae Ilex x meserveae Ilex x meserveae Ilex x meserveae Ilex x meserveae 'BluePrincess' Fruit and Leaf Ilex x meserveae 'BluePrincess' Fruit and Leaf Ilex x meserveae Form Ilex x meserveae Form Ilex x meserveae Ilex x meserveae
6 Cultivars/Varieties

Blue Huckleberry

Gaylussacia frondosa
Form Form Fruit Fruit Flowers and leaves Flowers and leaves Flower detail Flower detail Fruit and leaves Fruit and leaves Leaves Leaves

'Blue Ice' Blue Star

Amsonia 'Blue Ice'
Form Form Flowers Flowers Flowers Flowers Spring buds forming Spring buds forming Foliage Foliage Leaves Leaves

Blue Iris

Iris spuria
Form in July in Skane County, Sweden Form in July in Skane County, Sweden Flower in May in Bacs-Kiskun, Hungary Flower in May in Bacs-Kiskun, Hungary Seedpod in September in Burgenland, Austria Seedpod in September in Burgenland, Austria Seeds in July in Skane County, Sweden Seeds in July in Skane County, Sweden

Blue Jacket

Tradescantia ohiensis
Tradescantia ohiensis Tradescantia ohiensis Tradescantia ohiensis Tradescantia ohiensis Tradescantia ohiensis Tradescantia ohiensis Tradescantia ohiensis Tradescantia ohiensis Tradescantia ohiensis Tradescantia ohiensis Tradescantia ohiensis Tradescantia ohiensis

Bluejack Oak

Quercus incana
Branch and leaves (Moore County, NC)-Early Fall Branch and leaves (Moore County, NC)-Early Fall Side view of acorn (Moore County, NC)-Early Fall Side view of acorn (Moore County, NC)-Early Fall Bottom view of acorn (Moore County, NC)-Early Fall Bottom view of acorn (Moore County, NC)-Early Fall End and stem buds (Moore County, NC)-Early Fall End and stem buds (Moore County, NC)-Early Fall Entire margins (Moore County, NC)-Early Fall Entire margins (Moore County, NC)-Early Fall Front and back of leaf (Moore County, NC)-Early Fall Front and back of leaf (Moore County, NC)-Early Fall

Blue Jasmine

Clematis crispa
Clematis crispa Clematis crispa Clematis crispa Clematis crispa Clematis crispa Clematis crispa leaves and flowers leaves and flowers flower flower

Blue Lagoon Juniper

Juniperus conferta 'Blue Lagoon'
Juniperus conferta 'Blue Lagoon' Juniperus conferta 'Blue Lagoon'

Blue Larkspur

Delphinium carolinianum
Flowers Flowers Flower detail Flower detail Form Form Leaves Leaves Stem and back of flower Stem and back of flower Stem and fruits Stem and fruits

Blue Leadwort

Ceratostigma plumbaginoides
Form and flowers Form and flowers Flowers Flowers Blue flowers against medium green ovate leaves. Blue flowers against medium green ovate leaves. Blue flowers against medium green ovate leaves. Blue flowers against medium green ovate leaves.

Blue Licorice

Agastache rugosa
Agastache rugosa Agastache rugosa Agastache rugosa Agastache rugosa Agastache rugosa Agastache rugosa Agastache rugosa Agastache rugosa Agastache rugosa seedling Agastache rugosa seedling

Blue Lobelia

Lobelia elongata
Form in bloom Form in bloom Flower detail Flower detail One-sided raceme One-sided raceme Stem and leaves Stem and leaves Lobelia elongata Lobelia elongata Lobelia elongata Lobelia elongata

Blue Lobelia

Lobelia puberula
Flowers Flowers Flowers Flowers Form Form Close up of flower Close up of flower Leaves Leaves Fruit Fruit

Blue Lungwort

Pulmonaria officinalis
Pulmonaria officinalis Pulmonaria officinalis Pulmonaria officinalis Pulmonaria officinalis Pulmonaria officinalis Pulmonaria officinalis Pulmonaria officinalis Pulmonaria officinalis 'Trevi Fountain' Flower & Leaves - April 15 - Wake Co., NC 'Trevi Fountain' Flower & Leaves - April 15 - Wake Co., NC 'Trevi Fountain' Flower & Leaves - April 15 - Wake Co., NC 'Trevi Fountain' Flower & Leaves - April 15 - Wake Co., NC
1 Cultivar/Variety

Blue Lyme Grass

Leymus arenarius
Elymus arenarius Elymus arenarius Elymus arenarius Elymus arenarius Growing on the dunes Growing on the dunes Flower spike in May Flower spike in May
1 Cultivar/Variety

Blue Maidencane

Amphicarpum amphicarpon
Flowers (Woodbine, NJ)-Early Fall Flowers (Woodbine, NJ)-Early Fall Flower and fruit (Woodbine, NJ)-Early Fall Flower and fruit (Woodbine, NJ)-Early Fall Fruits (Woodbine, NJ)-Early Fall Fruits (Woodbine, NJ)-Early Fall Stem and leafs with hairs (Woodbine, NJ)-Early Fall Stem and leafs with hairs (Woodbine, NJ)-Early Fall Leaf and sheath with hairs (Woodbine, NJ)-Early Fall Leaf and sheath with hairs (Woodbine, NJ)-Early Fall Stem and spikelets (Woodbine, NJ)-Early Fall Stem and spikelets (Woodbine, NJ)-Early Fall

Blue Marguerite

Felicia amelloides
bushy groundcover with pale blue daisy "flowers" bushy groundcover with pale blue daisy "flowers" Pale blue daisy "flowers" Pale blue daisy "flowers"

Blue Marsh Violet

Viola cucullata
Viola cucullata Viola cucullata V. cucullata V. cucullata Viola cucullata Flower Viola cucullata Flower Viola cucullata Flower Viola cucullata Flower Viola cuculata 'Striata Alba' Viola cuculata 'Striata Alba' Viola cucullata Viola cucullata
2 Cultivars/Varieties

Blue Milkweed

Amsonia ciliata
Flowers and leaves in spring in Moore County Flowers and leaves in spring in Moore County Close up of flower Close up of flower Flowers, leaves, and form in the spring in Moore County Flowers, leaves, and form in the spring in Moore County Leaves Leaves Amsonia ciliata in the fall in Moore County Amsonia ciliata in the fall in Moore County Form of var. tenuifolia Form of var. tenuifolia
3 Cultivars/Varieties

Bluemink

Ageratum houstonianum
Ageratum houstonianum Ageratum houstonianum Ageratum houstonianum Ageratum houstonianum Ageratum houstonianum Ageratum houstonianum Ageratum houstonianum Ageratum houstonianum Ageratum houstonianum 'Blue Horizon' flowers Ageratum houstonianum 'Blue Horizon' flowers Ageratum houstonianum 'Blue Horizon' Ageratum houstonianum 'Blue Horizon'
7 Cultivars/Varieties