Flower Encyclopedia
Hydrangea
Hydrangea macrophylla
Big, cloud-like heads that fill space fast — the workhorse of lush, full arrangements.
Written by the Burton Floral Design team · Published July 24, 2026
At A Glance
Typical vase life
4–7 days
Availability
Most of the year
Peak months
May, Jun, Jul, Aug, Sep, Oct
Cost
Moderate
Fragrance
Little to none
Pollen
Low
Care
Needs attention
Out of water
Under 2 hours
Heat tolerance
Low
Cold tolerance
Moderate
Outdoor events
Fair
Around pets
Use caution
Pets in the house? Use caution.
Hydrangeas deserve caution around cats and dogs — the leaves, flowers, and buds contain compounds that can cause drooling, vomiting, and stomach upset if chewed in quantity. Keep arrangements out of reach, and contact your veterinarian or an animal poison-control service if a pet chews on them.
What It Means
Hydrangeas carry mixed symbolism: heartfelt gratitude and understanding in most modern usage, though older traditions also read them as boastfulness or heartlessness. The sheer volume of a single head reads as abundance and sincere thanks, which is why they show up so often in thank-you and hostess arrangements.
Colors it comes in
white · blue · lavender · pink · green · burgundy · antique mauve
Coordinates beautifully with
soft greens · ivory · dusty blue · blush · silver
Season & Sourcing
Field hydrangeas peak from late spring through fall, and greenhouse and imported supply keeps them on the market much of the year. Summer heat waves can shorten supply and hurt quality, and true antique tones are strongest in late season.
Vase life, honestly
Hydrangeas live and die by hydration. A fresh, well-conditioned head holds several days, but a thirsty one can collapse within hours — the big surface area loses water fast, so they are less forgiving than they look.
Fragrance
Hydrangeas have essentially no scent, which makes them an easy choice for dinner tables and enclosed rooms where fragrance would compete.
Keeping It Alive
- 1Recut stems at a sharp angle and get them into deep, cool water immediately — hydrangeas wilt quickly out of water.
- 2Strip lower leaves so nothing sits below the waterline.
- 3If a head starts to droop, submerge the entire bloom in cool water for 20 to 45 minutes; the petals absorb water and often revive.
- 4Refresh the water and recut stems every day or two, since they drink heavily.
- 5Keep them out of direct sun and away from heat vents, which speed up wilting.
What it costs: Priced per head rather than per stem, hydrangeas sit in the moderate range and read as more expensive than they cost because of their size. Off-season and antique-toned heads move the price up.
Where It Shines
At weddings
A budget-stretching volume flower for weddings — a few heads fill a centerpiece or the base of a large installation quickly. They give softness and a full, romantic look but need attentive hydration on a warm event day.
In sympathy work
White, blue, and green hydrangeas anchor standing sprays, baskets, and vase arrangements for services. Their size lets a designer build a generous piece without a large stem count.
Every day
Ideal for hostess gifts, thank-yous, and home arrangements where you want fullness for the money. A single blue or green head in a low vase reads elegant on its own.
A Little History
Hydrangeas are native to Asia and the Americas, with the mophead types long cultivated in Japan. Flower color in Hydrangea macrophylla shifts with soil chemistry — acidic soil tends to produce blue blooms and alkaline soil pink — which is why the same plant can change color year to year.
Questions People Ask
Why did my hydrangeas wilt overnight?
Hydrangeas lose water through their large petals faster than the stem can replace it, so a small hydration blockage causes a fast collapse. Recut the stem and submerge the whole head in cool water for 20 to 45 minutes — the petals drink directly and most heads firm back up.
How long do cut hydrangeas last?
Four to seven days is realistic with daily water changes and fresh cuts. They are thirstier and less forgiving than many flowers, so hydration matters more than room temperature.
Why are hydrangeas sometimes blue and sometimes pink?
In Hydrangea macrophylla, bloom color responds to soil acidity and available aluminum — acidic soil pushes blue, more alkaline soil pushes pink. Cut hydrangeas are simply sold in whatever color they grew, so availability of a specific shade varies by season and grower.
Are hydrangeas a concern around pets?
Yes — use caution with cats and dogs, since the leaves and flowers can cause drooling and stomach upset if chewed. Keep them out of reach and call your veterinarian or an animal poison-control service if a pet gets into the arrangement.
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