Bloom calendar

Plants for Zone 8 That Bloom in May

769 plants in the BloomsEye library that are hardy in USDA hardiness zone 8 and typically flower in May, such as False Indigo, Peony and Tulip. Each entry lists its bloom times, hardiness zones, and sun needs.

Showing 1 to 60 of 769 plants

How this list is made

Derived from each plant's bloom months and USDA hardiness zones, as stored in the BloomsEye library, which was written with AI assistance. Of these 769 plants, 621 have been checked against outside sources (43 fully verified); the rest have not been checked yet, and each plant's own page says which. The cards are AI-generated illustrations. Months here are Northern Hemisphere months; in the Southern Hemisphere, shift them by six months.

The flowers of May in zone 8

Every plant on this page is in flower in May. These are the ones with the shortest seasons around it, ranked by how much of each plant's flowering falls in April, May and June: a plant that opens and finishes here sits ahead of one that flowers from spring to frost, and ties go to the plants this site's guides name most often.

Abraham Darby
Rosa 'Auscot'
Full sunZones 5–105 ftModerate
Actaea
Narcissus 'Actaea'
Full sunZones 3–81.5 ftModerate
Listed as toxic to dogs and cats
Adirondack
Malus 'Adirondack'
Full sunZones 4–816 ftModerate
Listed as toxic to dogs and cats
Admiral
Anemone coronaria 'Admiral'
Full sunZones 7–1012 inModerate
Aglo Rhododendron
Rhododendron 'Weston's Aglo'
Part shadeZones 4–83 ftModerate
Listed as toxic to dogs and cats
Alba
Lamprocapnos spectabilis 'Alba'
Part shadeZones 3–92.5 ftModerate
Listed as toxic to dogs and cats
Album Rhododendron
Rhododendron 'Catawbiense Album'
Part shadeZones 4–86 ftModerate
Listed as toxic to dogs and cats
Alderleaf Mountain Mahogany
Cercocarpus montanus
Full sunZones 5–108.5 ftLow
Amazing Grace
Phlox subulata 'Amazing Grace'
Full sunZones 3–96 inLow
Amber Flower Carpet Rose
Rosa 'Noa97400a'
Full sunZones 4–82.5 ftModerate
American Alumroot
Heuchera americana
Part shadeZones 4–92 ftModerate
American Goldfinch False Indigo
Baptisia 'American Goldfinch'
Full sunZones 4–93.5 ftLow
Listed as toxic to cats
American Holly
Ilex opaca
Full sunZones 5–935 ftModerate
Listed as toxic to dogs and cats
American Hornbeam
Carpinus caroliniana
Part shadeZones 3–925 ftModerate
American Smoketree
Cotinus obovatus
Full sunZones 4–817 ftModerate
Amethyst
Astilbe × arendsii 'Amethyst'
Part shadeZones 4–82.5 ftHigh
Amethyst Dream Bachelor Button
Centaurea montana 'Amethyst Dream'
Full sunZones 3–81.5 ftLow
Amethyst Falls Wisteria
Wisteria frutescens 'Amethyst Falls'
Full sunZones 5–920 ftModerate
Listed as toxic to dogs and cats
Amethyst in Snow Bachelor's Button
Centaurea montana 'Amethyst in Snow'
Full sunZones 3–81.5 ftLow
Anah Kruschke
Rhododendron 'Anah Kruschke'
Part shadeZones 5–96 ftModerate
Listed as toxic to dogs and cats
Angel Face
Rosa 'Angel Face'
Full sunZones 5–93.5 ftModerate
Angelique
Tulipa 'Angelique'
Full sunZones 3–81.5 ftModerate
Listed as toxic to dogs and cats
Ann Magnolia
Magnolia 'Ann'
Full sunZones 4–811 ftModerate
Annual Phlox
Phlox drummondii
Full sunZones 2–1112 inModerate
Apache Plume
Fallugia paradoxa
Full sunZones 4–105 ftLow
Apeldoorn
Tulipa 'Apeldoorn'
Full sunZones 3–82 ftModerate
Listed as toxic to dogs and cats
Apollo Winterberry
Ilex 'Apollo'
Full sunZones 3–811 ftModerate
Listed as toxic to dogs and cats
Appalachian Sedge
Carex appalachica
Part shadeZones 3–88 inLow
Apple Blossom Flower Carpet Rose
Rosa 'Noamel'
Full sunZones 5–82 ftModerate
Apricot Coral Bells
Heuchera 'Apricot'
Part shadeZones 4–91.5 ftModerate
Apricot Drift Groundcover Rose
Rosa 'Meimirrote'
Full sunZones 4–81.5 ftModerate
Apricot Pride Darwin Hybrid Tulip
Tulipa 'Zantubeau'
Full sunZones 3–81.5 ftModerate
Listed as toxic to dogs and cats
Apricot Ranunculus
Ranunculus asiaticus
Full sunZones 8–101.5 ftModerate
Listed as toxic to dogs and cats
April Night
Salvia nemorosa 'April Night'
Full sunZones 4–81.5 ftLow
Arabicum
Ornithogalum arabicum
Full sunZones 7–102 ftModerate
Arctic Beauty Hardy Kiwi
Actinidia kolomikta 'Arctic Beauty'
Full sunZones 4–815 ftModerate
Arctic Rose Azalea
Rhododendron 'Arctic Rose'
Part shadeZones 5–83.5 ftModerate
Listed as toxic to dogs and cats
Arizona Rosewood
Vauquelinia californica
Full sunZones 8–1018 ftLow
Arkansas Bluestar
Amsonia hubrichtii
Full sunZones 5–82.5 ftModerate
Armeria Dreameria Daydream
Armeria pseudarmeria 'Daydream'
Full sunZones 6–912 inModerate
Arrowwood
Viburnum dentatum
Full sunZones 3–88 ftModerate
Ascot Rainbow Spurge
Euphorbia × martini 'Ascot Rainbow'
Full sunZones 6–92 ftLow
Listed as toxic to dogs and cats
Asiatic Jasmine
Trachelospermum asiaticum
Part sunZones 7–101.5 ftLow
August Beauty
Gardenia jasminoides 'August Beauty'
Part sunZones 8–115 ftHigh
Listed as toxic to dogs and cats
Autumn Bonfire Encore Azalea
Rhododendron 'Robleza'
Part shadeZones 6–92.5 ftModerate
Listed as toxic to dogs and cats
Autumn Bravo Encore Azalea
Rhododendron 'Conlen'
Part shadeZones 6–103.5 ftModerate
Listed as toxic to dogs and cats
Autumn Carnation Encore Azalea
Rhododendron 'Roblec'
Part shadeZones 6–94.5 ftModerate
Listed as toxic to dogs and cats
Autumn Carnival Encore Azalea
Rhododendron 'Conlet'
Part shadeZones 6–103 ftModerate
Listed as toxic to dogs and cats
Autumn Coral Encore Azalea
Rhododendron 'Conled'
Part shadeZones 7–102.5 ftModerate
Listed as toxic to dogs and cats
Autumn Embers Encore Azalea
Rhododendron 'Conleb'
Part shadeZones 6–93 ftModerate
Listed as toxic to dogs and cats
Autumn Empress Encore Azalea
Rhododendron 'Conles'
Part shadeZones 6–104 ftModerate
Listed as toxic to dogs and cats
Autumn Fire Encore Azalea
Rhododendron 'Roblez'
Part shadeZones 6–92.5 ftModerate
Listed as toxic to dogs and cats
Autumn Lilac Encore Azalea
Rhododendron 'Robles'
Part shadeZones 6–93 ftModerate
Listed as toxic to dogs and cats
Autumn Lily Encore Azalea
Rhododendron 'Roblex'
Part shadeZones 6–94.5 ftModerate
Listed as toxic to dogs and cats
Autumn Majesty Encore Azalea
Rhododendron 'Roblezd'
Part shadeZones 6–102.5 ftModerate
Listed as toxic to dogs and cats
Autumn Royalty Encore Azalea
Rhododendron 'Conlec'
Part shadeZones 6–94.5 ftModerate
Listed as toxic to dogs and cats
Autumn Sage
Salvia greggii
Full sunZones 7–92.5 ftModerate
Autumn Sangria Encore Azalea
Rhododendron 'Roblee'
Part shadeZones 6–104.5 ftModerate
Listed as toxic to dogs and cats
Autumn Starburst Encore Azalea
Rhododendron 'Robleze'
Part shadeZones 6–102.5 ftModerate
Listed as toxic to dogs and cats
Autumn Sweetheart Encore Azalea
Rhododendron 'Robleja'
Part shadeZones 6–94 ftModerate
Listed as toxic to dogs and cats

May bloom in zone 8 by flower color

A plant that comes in more than one color is counted under each. The picks rank the same way as the flowers above, so each color names the plants whose season sits closest to May.

White

247 plants

Yellow

98 plants

Orange

72 plants

Red

127 plants

Pink

270 plants

Purple

183 plants

Blue

77 plants

May bloom in zone 8 for shade

238 of these 769 plants will flower in less than a full day of sun.

Part shade

203 plants

Part sun

32 plants

May bloom in zone 8 by height

Mature height, in the three bands a border is planted in. Anything over 10 ft is structure rather than a border plant, and a climber is sized by whatever it is growing up, so both sit this out.

Front of the border

under 12 in

67 plants

Middle of the border

12 in to 3 ft

353 plants

Back of the border

3 ft and up

254 plants

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