6 Breathtaking Blue Hydrangea Bushes to Grow

Blue is a favorite hue for flowers in the garden. Try these blue hydrangea bushes for big blooms and eye-catching color.

nikko blue hydrangea
Via Jackson & Perkins

Nikko Blue Hydrangea

Hydrangea macrophylla ‘Nikko Blue’, Zones 5 to 9

This bigleaf type of hydrangea produces large mophead bloom clusters that will appear blue or pink, depending on your soil pH. The sturdy stems ensure your flowers won’t flop, and peeling bark adds fall and winter interest. It’s a good choice for a specimen plant in your landscape.

Want pink hydrangeas instead? Here’s how to change the flower color.

blue hydrangea
Via Proven Winners

Let’s Dance Rhythmic Blue

Hydrangea macrophylla ‘SMHMES14‘, Zones 5 to 9

Confused about when to prune your hydrangeas? You’re in luck—this one doesn’t need pruning at all! And, even better, it was bred to handle cold Midwestern winters. When planted in acidic soil, you’ll be treated to months of deep blue blooms.

Grow an Endless Summer hydrangea for weeks of blooms.

blue enchantress hydrangea
Via Monrovia

Blue Enchantress

Hydrangea macrophylla ‘Monmar’, Zones 4 to 9

You’ll be hypnotized by the beauty of the flowers, which are excellent for bouquets and arrangements—but don’t overlook the stunning dark ruby-red stems. Flowers gradually change from blue or pink (when planted in alkaline soils) to a creamy green hue.

Learn everything you need to know about hydrangea care.

seaside serenade cape cod
Doreen Wynja / Monrovia

Seaside Serenade Cape Cod

Hydrangea macrophylla ‘HMUPSI’, Zones 4 to 9

This reblooming two-toned blue hydrangea has curb appeal in spades. It prefers a location with morning sun and can handle partial shade. Plant a group of these shrubs together for a gorgeous border.

Learn how to dry hydrangeas so you can enjoy them year-round.

let's dance sky view hydrangea
Via Proven Winners

Let’s Dance Sky View

Hydrangea macrophylla × serrata ‘SMNHSME’, Zones 4 to 9

This sky blue hydrangea is a brand new introduction for 2023. The flowers bloom with pale green centers before maturing to solid blue. It’s a more reliable choice for gardeners who have had trouble getting hydrangeas to bloom in the past.

See 6 stunning white hydrangea bushes to grow.

blue hydrangea
Via Proven Winners

Tuff Stuff Ah-Ha

Hydrangea serrata SMNHSDD’, Zones 5 to 9

This baby blue mountain hydrangea is a hardier choice for gardeners in colder growing zones. Sit back and enjoy the show as it keeps blooming on need wood all season long. We love the frilly waterlily-like shape of the flower petals.

Want green flowers? Try Limelight and Little Lime hydrangeas.

Lori Vanover
Lori has 20 years of experience writing and editing home, garden, birding and lifestyle content for several publishers. As Birds & Blooms senior digital editor, she leads a team of writers and editors sharing birding tips and expert gardening advice. Since joining Trusted Media Brands 13 years ago, she has held roles in digital and print, editing magazines and books, curating special interest publications, managing social media accounts, creating digital content and newsletters, and working with the Field Editors—Birds & Blooms network of more than 50 backyard birders. Passionate about animals and nature, Lori has a Bachelor of Science degree in Agricultural and Environmental Communications from the University of Illinois. In 2023, she became certified as a Wisconsin Extension Master Gardener, and she is a member of the Wisconsin Society for Ornithology and sits on the organization's Publications Advisory Committee. She frequently checks on her bird feeders while working from home and tests new varieties of perennials, herbs and vegetable plants in her ever-growing backyard gardens.