Petunia vs surfinia: the difference, and which one to choose

Daniel Platteau

Introduction: two garden and balcony superstars

If you're looking to add colour to your garden or balcony with generous, easy-to-grow flowers, the petunia and the surfinia are probably at the top of your list. These two plants, often confused with one another, belong to the same family (the Solanaceae) and share similar characteristics. Yet they show major differences in growth habit, hardiness and care.

In this comprehensive guide, we'll explore:

• The origins and history of these two plants.
• A detailed description to help you tell them apart easily.
• Their pros and cons, to help you make the right choice.
• The key differences between petunia and surfinia.
• Growing tips to help them thrive.
• Common misconceptions to avoid.

Ready to become an expert on annual flowers? Let's get started!

1. The petunia: the classic, versatile flower

🌸 Description and characteristics

The petunia (Petunia × hybrida) is an annual plant native to South America, more precisely Brazil and Argentina. It belongs to the Solanaceae family, like the tomato or tobacco plant. With its funnel-shaped flowers, vivid colours (pink, purple, white, red, blue, yellow) and sometimes enchanting scent, the petunia has been a garden and balcony staple since the 19th century.

Main characteristics:

• Habit: Upright or slightly trailing, depending on variety.
• Size: Between 20 cm and 60 cm tall.
• Flowers: 5 to 10 cm in diameter, single or double, often fragrant.
• Foliage: Oval leaves, slightly sticky and downy.
• Flowering: From May to the first frosts (April to October depending on climate).
• Hardiness: Tolerates heat well, but can suffer from excess water or poorly drained soil.

📜 History: from the mountains of South America to gardens worldwide

Wild petunias grow in the mountainous regions of South America, where they withstand varied climatic conditions. The first hybrid petunias were created in the 19th century by European horticulturists, who crossed different species to obtain hardier, more colourful flowers.

Today, there are more than 30 petunia species, but the most widely grown hybrids descend from Petunia axillaris (white flowers) and Petunia integrifolia (purple flowers).

✅ Benefits of the petunia

• Easy to grow: Ideal for beginners.
• Long flowering period: From May until the frosts.
• A range of colours and shapes: Single, double, trumpet-shaped flowers, and more.
• Pleasant scent: Some varieties give off an enchanting fragrance in the evening.
• Heat tolerant: Copes well with hot days.

❌ Drawbacks of the petunia

• Sensitive to overwatering: Can rot if the soil is too wet.
• Sticky foliage: Can attract aphids.
• Less trailing habit: Less suited to hanging baskets than the surfinia.

🔬 Recent research and innovations

Studies carried out at Wageningen University (Netherlands) have shown that modern petunias are increasingly disease-resistant, notably thanks to crosses with wild species. A recent variety, the "Wave" petunia, has been selected for its increased hardiness and its ability to cover the ground quickly.

2. The surfinia: the star of balconies and hanging baskets

🌺 Description and characteristics

The surfinia (Petunia × hybrida 'Surfinia') is a specific petunia variety, developed by the Japanese company Suntory in the 1990s. Unlike the classic petunia, the surfinia has been specially bred for its trailing habit, which makes it the star of hanging baskets and window boxes.

Main characteristics:

• Habit: Strongly trailing, ideal for hanging baskets and window boxes.
• Size: Stems can reach 1 to 2 metres long (under optimal conditions).
• Flowers: Smaller than those of the classic petunia (3 to 5 cm in diameter), but in very large numbers.
• Foliage: Smaller, less sticky leaves than the petunia.
• Flowering: Abundant and continuous, from May until the frosts.
• Hardiness: More resistant to rain and wind than the classic petunia.

📜 History: the Japanese invention that revolutionised balconies

The surfinia was created by Suntory, a Japanese company specialising in beverages, which developed this variety to meet the demand from Japanese gardeners, who were keen on trailing plants for their small urban spaces. The name "Surfinia" is a blend of "Surf" (evoking the movement of waves) and "Petunia".

Since its launch, the surfinia has become a worldwide phenomenon, with hundreds of varieties available (Surfinia Purple, Surfinia Red, Surfinia Blue, and so on).

✅ Benefits of the surfinia

• Spectacular trailing habit: Perfect for hanging baskets and window boxes.
• Abundant flowering: Hundreds of flowers per plant.
• Weather resistant: Copes better with rain and wind than the classic petunia.
• Easy care: Less prone to disease.
• Fragrant varieties: Some varieties give off an enchanting scent.

❌ Drawbacks of the surfinia

• Higher price: Often more expensive than the classic petunia.
• Less suited to borders: Its trailing habit is less attractive in open ground.
• Frost sensitive: Like all petunias, it cannot tolerate freezing temperatures.

🔬 Recent research and innovations

Studies carried out by the Suntory Global Innovation Center have made it possible to develop surfinia varieties that are even more resistant to drought and disease. A recent variety, the Surfinia "Double", offers double flowers for an even more spectacular effect.

3. Petunia vs Surfinia: the big comparison

🔍 How to tell them apart easily

• Look at the habit: If the plant is upright or slightly trailing, it's a classic petunia. If it's strongly trailing, it's a surfinia.
• Look at the stems: Surfinias have longer, more flexible stems.
• Count the flowers: Surfinias generally have more flowers than classic petunias.

4. Growing and care: how to grow petunias and surfinias like a pro

🌱 Ideal conditions for both plants

• Exposure: Full sun (at least 6 hours a day).
• Soil: Well-drained, rich in organic matter (mix potting soil and compost).
• Watering: Regular but not excessive (let the soil surface dry out between waterings).
• Fertiliser: Fertiliser for flowering plants (every 15 days during flowering).

🌿 Planting and repotting

• Ideal timing: April to May (after the frosts).
• Choosing a container:
  • Classic petunia: Pots 20 to 30 cm in diameter, beds, borders.
  • Surfinia: Hanging baskets, deep window boxes (minimum 30 cm deep).
• Tip: Add clay pebbles to the bottom of the pot for good drainage.

💧 Watering and fertilising

• Watering:
  • Petunia: Water at the base (avoid wetting the leaves to limit disease).
  • Surfinia: Water more often (hanging baskets dry out faster).
• Fertiliser:
  • Use a liquid fertiliser for flowering plants (a "petunia fertiliser" type).
  • Avoid fertilisers too high in nitrogen (they favour foliage at the expense of flowers).

❄️ Overwintering

• Petunias and surfinias are annuals: They don't survive frost.
• Tip: You can try bringing them indoors before the first frosts (somewhere bright and cool).

🐛 Common problems and solutions

5. Design ideas: how to work petunias and surfinias into your garden

🌸 With classic petunias

• Beds: Pair them with marigolds, lobelias or bidens for a colourful effect.
• Borders: Plant them in a row to outline a flowerbed.
• Pots: Mix them with geraniums or lantanas for a colour contrast.

🌺 With surfinias

• Hanging baskets: Hang them on a balcony or terrace for a cascading effect.
• Window boxes: Pair them with blue lobelias or fuchsias for a colour contrast.
• Living walls: Fix wall-mounted planters for a vertical effect.

🎨 2026's trending colour palette

According to horticultural trends, the leading colours for petunias and surfinias in 2026 are:

• Powder pink
• Electric blue
• Deep purple
• Pearly white
• Sun yellow

6. Myths and misconceptions to avoid

❌ Myth #1: "The surfinia is a different species from the petunia"

• Reality: The surfinia is a specific petunia variety, bred for its trailing habit.

❌ Myth #2: "Petunias and surfinias attract mosquitoes"

• Reality: No scientific study confirms this claim. On the other hand, fragrant flowers can attract butterflies and bees, which is beneficial for biodiversity!

❌ Myth #3: "You need to prune petunias to make them flower more"

• Reality: No, don't prune petunias! They flower naturally, and excessive pruning can weaken the plant.

❌ Myth #4: "Surfinias are hardier than classic petunias"

• Reality: Surfinias are more resistant to rain and wind, but both plants have the same basic needs (sun, water, fertiliser).

7. Where to buy quality petunias and surfinias?

If you'd like to get hold of quality plants, here are some reliable addresses in France and Europe:

• Pépinières Travers (flowering plant specialist)
• Bakker (wide choice of varieties)
• Suntory (Surfinia brand) (for official varieties)
• Amazon (for plants online)
• Jardiland (online garden centre chain)

Conclusion: petunia or surfinia, which should you choose?

🌟 Our favourite

For a balcony or terrace, the surfinia is without a doubt the best choice thanks to its trailing habit and hardiness. For a garden or flower beds, the classic petunia offers more variety and better value for money.

📚 Sources and references

1. Wageningen University – Studies on the hardiness of modern petunias: https://www.wur.nl

2. Suntory Global Innovation Center – History and development of surfinias: https://www.suntory.com

3. Royal Horticultural Society (RHS) – Petunia growing guide: https://www.rhs.org.uk

4. Pépinières Travers – Technical fact sheet on petunias and surfinias: https://www.pepinierestravers.com

5. Jardiland – Care advice for flowering plants: https://www.jardiland.com

6. Wikipedia – Petunia (for botanical origins): https://en.wikipedia.org/wiki/Petunia