What changes some hydrangeas from pink to blue?

Aluminum available in acidic soil

What is a mophead hydrangea?

One with large round flower heads

What are the showy hydrangea petals usually?

Sterile florets with colored sepals

Hydrangeas Trivia Quiz – Names, Facts and Surprises

The same hydrangea can flower blue in one garden and pink in another, and this hydrangeas trivia quiz explains the soil chemistry behind the switch. See the blue hedges of the Azores, the hydrangea temples of Japan and the many types that gardeners grow, from mopheads to lacecaps.

Start Hydrangeas Trivia Quiz

🎯 Daily Trivia Challenge • 🧠 10 Questions • ⏱️ 150 Seconds

Question 1 / 10 Time: 150s

Color
What changes some hydrangeas from pink to blue?
Species
Which hydrangea changes color with soil?
Azores
Which Portuguese islands are famous for hydrangea hedges?
Japan
Which season do Japanese hydrangea temples celebrate?
Mophead
What is a mophead hydrangea?
Sterile
What are the showy hydrangea petals usually?
Name
What does hydrangea mean in Greek?
Thirsty
Why do hydrangeas wilt in hot sun?
Climbing
Which hydrangea climbs walls?
Origin
Where are most hydrangea species native?

Explanations: answer key for all 10 questions

Q1: What changes some hydrangeas from pink to blue?
Answer: Aluminum available in acidic soil
Alkaline soil keeps them pink.
Q2: Which hydrangea changes color with soil?
Answer: Bigleaf hydrangea
White types stay white.
Q3: Which Portuguese islands are famous for hydrangea hedges?
Answer: The Azores
Hedges line roads and fields.
Q4: Which season do Japanese hydrangea temples celebrate?
Answer: The June rainy season
The flowers are called ajisai.
Q5: What is a mophead hydrangea?
Answer: One with large round flower heads
Lacecaps have flat heads.
Q6: What are the showy hydrangea petals usually?
Answer: Sterile florets with colored sepals
Tiny fertile flowers sit in the middle.
Q7: What does hydrangea mean in Greek?
Answer: Water vessel
Its seed capsules look like cups.
Q8: Why do hydrangeas wilt in hot sun?
Answer: They need lots of water
Morning sun and afternoon shade help.
Q9: Which hydrangea climbs walls?
Answer: Climbing hydrangea
It uses aerial roots.
Q10: Where are most hydrangea species native?
Answer: East Asia and the Americas
Japan and China have many.

Hydrangeas Trivia Quiz – Blooms That Change Color

Hydrangeas are flowering shrubs native mainly to East Asia and the Americas. Their big clusters of flowers come in blue, pink, purple, white and green, and they are popular in gardens from Japan to Europe and North America.

In bigleaf hydrangeas, flower color depends on soil chemistry. In acidic soil, aluminum is available and flowers turn blue, while in alkaline soil they stay pink. Gardeners can change the color by adjusting the soil, though white hydrangeas stay white.

Hydrangeas need plenty of water, which is reflected in their Greek name meaning water vessel. Japan celebrates ajisai during the June rainy season, and hydrangea hedges paint the Azores blue each summer.

What This Quiz Teaches

Gardeners and travelers will enjoy these questions.

How soil changes color
What mophead and lacecap mean
Where hydrangeas are famous
What the name means
How to keep them healthy

Did You Know?

Dried hydrangeas keep their color.
Panicle hydrangeas flower on new wood.
Oakleaf hydrangeas have autumn color.
Hydrangeas are toxic to pets.
Annabelle is a famous white variety.