Petunias and Surfinias: The Ultimate Guide

title{🔬 Biology and origin}
subtitle{A Japanese hybrid with exceptional performance}

Surfinias are complex hybrids mainly derived from <Petunia axillaris> and <Petunia integrifolia>, developed by the Japanese company <Suntory> in the 1990s. Their commercial name "Surfinia" has become a registered trademark, but is often used as a common name.

• Scientific name: Petunia × atkinsiana (formerly Petunia hybrida 'Surfinia')
• Family: Solanaceae
• Type: Perennial plant in mild climates, annual in temperate climates
• Habit: Trailing, length 60-150 cm depending on variety
• Foliage: Dense, slightly pubescent
• Flowers: Funnel-shaped, 3-5 cm in diameter, various colours (pink, purple, blue, white, red)
• Particularity: Exceptional resistance to rain, wind and diseases

subtitle{🌍 History of the Surfinia}

The development of Surfinias marked a revolution in ornamental horticulture. Before their appearance, trailing petunias were rare and not very resistant.

• 1980s: Start of research by Suntory in Japan to create a weather-resistant petunia.
• 1990: Commercial launch of the first Surfinia (the 'Purple' series).
• 1990s-2000s: Global expansion, development of many colours and varieties.
• 2000s: Introduction of new series (Double Surfinia, Amethystina, etc.).

The name "Surfinia" is a registered trademark of Suntory, but many producers use this term to refer to all trailing petunias that are similar.

title{🌱 Cultivation and care of Surfinias}
subtitle{Robust and easy-to-grow plants}

subtitle{📌 Optimal growing conditions}

• Exposure: Full sun (minimum 6 hours/day). Tolerates partial shade but flowering is reduced.
• Soil: Well-drained, fertile soil, slightly acidic to neutral (pH 6-7). Surfinias are more tolerant of poor soils than classic petunias.
• Watering: Regular but not excessive. Surfinias tolerate drought better than classic petunias.
• Temperature: Ideally between 15°C and 25°C. Sensitive to frost.
• Humidity: Resistant to ambient humidity, but avoid standing water.

subtitle{🌱🔧 Planting}

1. Period: After the last frosts, when the soil is warm (mid-May in temperate climates).
2. Spacing: 30-40 cm between plants to allow for the trailing habit to develop.
3. Depth: Plant at the same level as in the container.
4. Support: Provide a support or structure to guide the growth (trellis, hanging basket).

subtitle{💧 Watering and fertilizing}

• Watering:
• - Young plants: daily for the first week.
• - Established plants: 2-3 times per week in summer.
• - Tolerant of drought once well established.
• Fertilizing:
• - Balanced fertilizer or special flower plant fertilizer every 2 weeks.
• - Slow-release fertilizer at planting time.
• - Reduce fertilizing towards the end of the season.

subtitle{✂️ Pruning and maintenance}

1. Remove spent flowers: Pinch off faded flowers regularly to stimulate flowering.
2. Light pruning: Trim back excessively long stems to maintain an attractive habit.
3. Winter protection: In cold climates, Surfinias do not survive the winter. They are typically grown as annuals.

For professional growers: Surfinias are particularly suitable for growing in hanging baskets and containers. Their resistance to the elements makes them ideal plants for outdoor sales.

title{🚜 Professional cultivation of Surfinias}
subtitle{Optimizing for mass production and retail sales}

The professional cultivation of Surfinias relies on techniques similar to those used for petunias, with some specific adaptations related to their trailing habit and resistance.

subtitle{🏭 Greenhouse conditions}

• Temperature: 18-22°C for germination, 20-25°C for growth.
• Relative humidity: 60-70% to avoid fungal diseases.
• Light: 12-16 hours/day. Supplemental lighting necessary in winter.
• Substrate: Light and well-draining mix (peat, perlite, coir).

subtitle{🌱💊 Management of diseases and pests}

Surfinias are generally more resistant than classic petunias, but can still be susceptible to certain problems.

subtitle{🐛 Common pests}

• Aphids: Less common than on classic petunias, but should be monitored.
• Whiteflies: Can be a problem in greenhouses.
• Thrips: Can cause floral deformities.

subtitle{🍄 Fungal and bacterial diseases}

• Mildew: Rare on Surfinias due to their resistance, but possible in humid conditions.
• Powdery mildew: Can appear towards the end of the season.
• Grey rot: Rare due to their airy habit.

subtitle{🌡️💧 Environmental management}

• Irrigation: Drip irrigation is recommended to avoid leaf wetness.
• Drainage: Essential to avoid root rot.
• Fertilization: Follow a precise program with regular foliar analysis.

title{🌈 Varieties of Surfinias: Selection guide}
subtitle{Colours and forms for all tastes}

subtitle{📚 Main series}

• 'Classic Surfinia' series:
• - Single flowers, trailing habit
• - Colours: pink, purple, blue, white, red
• - Examples: 'Surfinia Purple', 'Surfinia Pink'
• - Use: Hanging baskets, containers
• 'Double Surfinia' series:
• - Double flowers, trailing habit
• - Colours: pink, purple, white
• - Examples: 'Double Surfinia Pink', 'Double Surfinia Blue'
• - Use: Hanging baskets, lush arrangements
• 'Amethystina' series:
• - Deep purple flowers, fragrant
• - Very trailing habit
• - Example: 'Surfinia Amethyst'
• - Use: Hanging baskets, shaded balconies
• 'Tidal Wave' series:
• - Very vigorous habit, abundant flowers
• - Colours: pink, purple, white
• - Example: 'Surfinia Tidal Wave Pink'
• - Use: Large suspensions, ground cover
• 'Bella' series:
• - Smaller but very numerous flowers
• - Compact and dense habit
• - Example: 'Surfinia Bella Blue'
• - Use: Small baskets, borders

subtitle{🎨 Classification by colour}

• Pink: 'Surfinia Pink', 'Double Surfinia Pink'
• Purple: 'Surfinia Purple', 'Amethystina'
• Blue: 'Surfinia Blue', 'Bella Blue'
• White: 'Surfinia White', 'Double Surfinia White'
• Red: 'Surfinia Red', 'Tidal Wave Red'
• Yellow: 'Surfinia Yellow'
• Bicolour: 'Surfinia Picotee' (white with pink edges)

subtitle{🌟 Varieties resistant to diseases}

• All Surfinia series: Resistant to rain, wind and fungal diseases
• 'Tidal Wave' series: Resistant to drought
• 'Double Surfinia' series: Resistant to the elements

subtitle{🌱 Varieties suitable for professional cultivation}

• For hanging baskets: 'Classic Surfinia', 'Double Surfinia', 'Bella'
• For large suspensions: 'Tidal Wave'
• For lush arrangements: 'Double Surfinia'
• For shaded balconies: 'Amethystina'

title{🔍 Where to buy Surfinias?}
subtitle{For amateur gardeners and professional growers}

• Online nurseries:
• Promesse de Fleurs
• Truffaut
• Jardiland
• Specialized producers:
• Suntory (official creator)
• Danziger
• Suntory Flowers Europe
• Horticultural cooperatives:
• CPMA (France)
• VGB (Netherlands)

title{🌱🔄 Propagation of Surfinias}
subtitle{Techniques adapted to these modern hybrids}

subtitle{🌱 Seeds}

• Period: January to March for early flowering.
• Substrate: Light mix (peat + perlite).
• Temperature: 20-24°C for germination.
• Light: Essential after emergence.
• Transplanting: When seedlings have 2-3 true leaves.
• Time to flowering: 12-16 weeks.

Hybrid F1 Surfinias do not produce true-to-type seeds. To obtain seeds, it is necessary to grow non-hybrid varieties or to make controlled crosses.

subtitle{🌿 Cuttings}

• Period: Summer (July-August).
• Method: Take semi-hardwood cuttings.
• Substrate: Peat/perlite mix or water.
• Rooting: 2-3 weeks at 20-22°C.
• Advantage: Preserves the characteristics of the parent plant.

subtitle{🏭 In vitro culture}

• Use: Mass propagation of patented varieties.
• Advantages: Speed, absence of diseases, preservation of characteristics.
• Cost: Significant investment, reserved for large producers.

📊 Comparison Table

• Criteria | Petunias (Petunia spp.) | Surfinias (Petunia × atkinsiana)
• Habit | Upright to spreading (20-60 cm) | Trailing (60-150 cm)
• Rain Resistance | Moderate (except Wave varieties) | Excellent
• Wind Resistance | Moderate | Excellent
• Disease Resistance | Variable (susceptible) | Excellent
• Flowering | Abundant but may be irregular | Very abundant and continuous
• Available Colours | Very wide range | Wide range (pink, purple, blue, white, red)
• Pot Culture | Yes (small pots) | Ideal (hanging baskets)
• Ground Culture | Yes | Yes (ground cover)
• Price (plants) | €2-5 | €3-8
• Lifespan | Annual (except in mild climates) | Annual (except in mild climates)
• Propagation | Seeds, cuttings | Seeds, cuttings, in vitro
• Best Use | Flower beds, borders, small pots | Hanging baskets, large containers, balconies

💡 When to choose one or the other?

🌿 Choose petunias if...

• You want plants for flower beds or borders.
• You prefer a wide variety of colours and forms.
• You are growing in the ground or in small pots.
• You are on a tight budget (petunias are generally less expensive).
• You want plants that are easy to propagate from seed.

🌊 Choose Surfinias if...

• You want plants for hanging baskets or large containers.
• You are looking for exceptional weather resistance.
• You want very abundant and continuous flowering.
• You need plants that are resistant to diseases.
• You are growing in a humid or windy climate.

Both plants can be combined to create spectacular effects: petunias in flower beds and surfinias in hanging baskets above.

📈 The Petunia and Surfina Market

A growing sector with many opportunities

Petunias and Surfinias represent a significant market in the global ornamental horticulture industry. Their popularity makes them essential plants for both amateur gardeners and professionals.

🌍 Key Market Figures

• Global sales: Over 500 million plants sold per year.
• Europe: Leading producer of petunias (Netherlands, Italy, France).
• United States: Major consumer, particularly for hanging baskets.
• Japan: Home of Surfinias, a highly developed market.
• Annual growth: 3-5% per year, driven by new resistant varieties.

💼 Commercial Opportunities

• Plant sales: 10-15 cm pots, hanging baskets, seedling trays.
• Seed sales: For amateur gardeners and small producers.
• Rooted cuttings: For producers who want to save time.
• Creation of arrangements: Hanging baskets, floral arrangements.
• Plant rental: For events and parties.
• Online sales: Specialised platforms, marketplaces.

🎯 Target Markets

• Private individuals: Amateur gardeners, balconies, terraces.
• Professionals: Landscape gardeners, florists, local authorities.
• Event industry: Weddings, parties, urban decorations.
• Export: Sales to international markets (Europe, North America).

🌱🔬 Varietal Innovation

New varieties that are revolutionising the market

Varietal innovation is a key driver of the petunia and Surfina market. Breeders are working on several aspects: resistance, colour, growth habit, and climate adaptation.

🎨 New Colours

• Black petunias: 'Black Velvet', 'Black Cherry'
• Bright yellow petunias: 'Sun Spun Yellow', 'Lemonade'
• Orange petunias: 'Orange Wave', 'Tangerine'
• Bicolour petunias: 'Picotee', 'Star', 'Tartan'
• Variegated petunias: Leaves variegated with white or yellow

🌿 New Forms

• Double petunias: Fully double flowers, pompom-like appearance
• Miniature petunias: 2-3 cm flowers, compact growth habit
• Fragrant petunias: 'Sweetunia', 'Fragrant Cloud'
• Petunias with coloured foliage: 'Limelight', 'Golden Star'

🛡️ Improved Resistance

• Downy mildew resistance: 'Merlin', 'Carpet' series
• Drought resistance: 'Wave', 'Supertunia' series
• Slight frost resistance: Varieties for temperate climates
• UV resistance: Colours that do not fade

🌍 Climate Adaptation

• Varieties for hot climates: Resistant to heat and drought
• Varieties for cold climates: Early flowering, slight frost resistance
• Varieties for humid climates: Resistant to fungal diseases
• Varieties for shaded balconies: 'Amethystina', 'Wave Purple'

📦 Packaging and Presentation

How to showcase your petunias and Surfinias

Presentation is crucial for the sale of petunias and Surfinias. Good presentation can increase sales by 20-30%.

🛒 Packaging for retail sales

• 10-15 cm pots: Transparent plastic or kraft paper packaging.
• Hanging baskets: Packaging with a hanger for suspension.
• 7-9 cm seedling trays: For young plants.
• 20-30 plant trays: For mass plantings and professionals.
• Planting kits: Pots + substrate + seeds/cuttings.

🎨 Presentation

• Colourful labels: With a photo of the flower and growing tips.
• Decorative bands: Around the pot to attract attention.
• Arrangements: Combinations of different varieties (e.g. Wave petunias + Surfinia).
• Displays: Shelves, hanging displays, sales tables.

📊 Pricing Strategies

• Retail prices:
• - 7-9 cm seedling tray: £1.50-£3
• - 10-15 cm pot: £3-£6
• - Hanging basket: £8-£15
• - 20-30 plant tray: £10-£20
• Wholesale prices:
• - 7-9 cm seedling tray: £0.50-£1.50
• - 10-15 cm pot: £1.50-£3
• - 20-30 plant tray: £5-£10
• Strategies:
• - Promotions on sets (e.g. 3 pots for £10).
• - Bundled sales (e.g. complete planting kit).
• - Seed packet sales (£0.50-£2).

🌿 Ornamental Uses

Beyond flowerbeds and hanging baskets

🏡 Landscaping

• Ground cover: Wave or Tidal Wave varieties for large areas.
• Borders: Multiflora or Merlin varieties for neat borders.
• Flowerbeds: A mix of Grandiflora and Multiflora for a spectacular effect.
• Window boxes: A combination of petunias and surfinias for a dynamic effect.
• Balconies: Petunias in pots, surfinias in hanging baskets.
• Roofs and terraces: Hardy varieties for green roofs.

🎋 Creative Uses

• Floral arrangements: Cut flowers for bouquets (Grandiflora petunias).
• Edible decoration: Edible flowers for salads and desserts (petunias not treated with pesticides).
• Phytoremediation: Ability to absorb certain pollutants (studies in progress).
• Companion plants: Repel certain pests (aphids, whiteflies).

🍽️ Edible Petunias and Surfinias

A flower to discover in the kitchen

Petunia flowers are edible and can be used to decorate dishes. Their taste is slightly peppery, reminiscent of sweet peppers.

• Culinary uses:
• - Decoration for salads, desserts, cocktails.
• - Infusion of dried flowers for herbal teas.
• - Crystallized petals for baking.
• Precautions:
• - Only consume the flowers (the leaves can be toxic).
• - Avoid petunias treated with pesticides.
• - Some people may be allergic.
• Simple recipe:
• - Flower salad: Mix petunia petals with mixed greens, goat cheese, and vinaigrette.

Edible petunias are often heirloom varieties or wild species. Modern hybrids may have a less pronounced flavour.

🌱🔬 Medicinal and Other Uses

Unexpected properties

💊 Traditional medicinal properties

• Antioxidants: Petunias contain anthocyanins, pigments with antioxidant properties.
• Anti-inflammatory: Traditionally used for skin inflammations.
• Antispasmodic: Some species used for cramps.
• Precautions:
• - Do not use for medicinal purposes without consulting a healthcare professional.
• - Some species may be toxic in large quantities.

🧪 Scientific Uses

• Genetic research: The petunia is a model organism in plant biology (studies on flowering, flower colour).
• Synthetic biology: Used to study the production of pigments and fragrances.
• Phytoremediation: Ability to absorb certain heavy metals (studies in progress).

🎨 Artistic Uses

• Natural dye: Petal can be used to dye fabrics (pink, purple, blue colours).
• Photography: Flowers used as photographic subjects for their beauty and diversity.
• Dried flower arrangements: Dried flowers for lasting compositions.

🐛 Pests: Identification and solutions

🐜 Aphids

• Symptoms: Curled leaves, sticky honeydew, ants.
• Treatment:
• - Manual: Hand removal or water jet.
• - Biological: Insecticidal soap, nettle manure, ladybugs.
• - Chemical: Systemic insecticides (as a last resort).
• Prevention: Companion plants (nasturtiums, marigolds).

🟡 Whiteflies (Bemisia tabaci)

• Symptoms: Small white flies on the underside of leaves, honeydew, sooty mold.
• Treatment:
• - Yellow sticky traps.
• - Natural predators: Macrolophus, Encarsia formosa.
• - Insecticides: Insecticidal soap, neem oil.
• Prevention: Greenhouse ventilation, avoid excess nitrogen.

🐛 Caterpillars

• Symptoms: Holes in leaves, presence of droppings.
• Treatment:
• - Manual: Hand picking.
• - Biological: Bacillus thuringiensis (Bt).
• - Chemical: Specific insecticides (as a last resort).
• Prevention: Crop rotation, trap plants.

🔴 Thrips

• Symptoms: Deformed leaves, silvery streaks, damaged flowers.
• Treatment:
• - Blue traps.
• - Natural predators: Amblyseius, Neoseiulus.
• - Insecticides: Spinosad, neem oil.
• Prevention: Weed removal, ventilation.

🍄 Diseases: Identification and solutions

🟣 Downy mildew (Peronospora)

• Symptoms: Yellow spots on the upper side of leaves, grey-purple fuzz underneath.
• Treatment:
• - Remove affected leaves.
• - Fungicides: Copper-based products, systemic products.
• - Prevention: Avoid moisture on leaves, ventilation.
• Prevention: Crop rotation, disinfection of equipment.

⚪ Powdery mildew

• Symptoms: White powdery coating on leaves and stems.
• Treatment:
• - Fungicides: Sulfur, baking soda.
• - Biological: Antagonist bacteria (Pseudomonas).
• - Prevention: Avoid nocturnal humidity, ventilation.
• Prevention: Avoid excess nitrogen, crop rotation.

🟤 Grey mold (Botrytis)

• Symptoms: Brown spots, grey fuzz, wilting.
• Treatment:
• - Remove affected parts.
• - Fungicides: Products based on Botrytis cinerea.
• - Prevention: Avoid excess humidity, ventilation.
• Prevention: Avoid standing water, disinfection.

🟥 Bacterial spots

• Symptoms: Brown or black spots on leaves, yellow borders.
• Treatment:
• - Remove affected leaves.
• - Antibacterials: Copper-based products.
• Prevention: Crop rotation, disinfection of equipment.

🟨 Chlorosis (deficiency)

• Symptoms: Yellow leaves with green veins, stunted growth.
• Causes: Deficiency in iron, magnesium, nitrogen.
• Treatment:
• - Appropriate fertilizer (chelated iron for iron deficiency).
• - Correct soil pH.
• Prevention: Soil analysis, balanced fertilization.

🌡️ Environmental Problems

🔥 Sunburn

• Symptoms: Yellow or white leaves, dry edges.
• Causes: Excessive sun exposure, especially on young plants.
• Solution:
• - Temporary shade with shade cloth.
• - Regular watering to reduce water stress.
• Prevention: Gradual acclimatization of plants.

💧 Overwatering

• Symptoms: Yellow leaves, wilting, root rot.
• Causes: Poorly drained soil, excessive watering.
• Solution:
• - Reduce watering.
• - Improve drainage (sand, perlite).
• - Remove affected parts.
• Prevention: Use pots with drainage holes.

❄️ Frost and cold

• Symptoms: Black leaves, wilting, stopped growth.
• Causes: Temperatures below 5°C (41°F).
• Solution:
• - Bring pots indoors.
• - Protect outdoor plants with horticultural fleece.
• Prevention: Plant after the last frost.

🌱 Lack of flowering

• Symptoms: Few or no flowers, excessive foliage.
• Causes: Excess nitrogen, lack of light, lack of pruning.
• Solution:
• - Reduce nitrogen fertilizers.
• - Increase sunlight exposure.
• - Pinch stems to promote branching.
• Prevention: Balanced fertilization program.

📖 Recommended Books

• Titre : Petunias and Surfinias: The Complete Guide
• Auteur : Daniel Platteau
• Description : Practical guide to the cultivation, care, and selection of petunias and surfinias.
• Disponible : Amazon (search by title)
• Titre : The Petunia Book
• Auteur : Royal Horticultural Society
• Description : Reference guide to petunias, their history, and cultivation.
• Disponible : RHS Shop
• Titre : Flowering Plants for the Garden
• Auteur : Christopher Lloyd
• Description : General book with a chapter dedicated to petunias.
• Disponible : Amazon
• Titre : The Art of Growing Petunias
• Auteur : Jean-Pierre Renard
• Description : Practical guide for amateur and professional gardeners.
• Disponible : Fnac

🌍 Websites and Forums

• Site : Promesse de Fleurs — Petunia Guide
• Site : Truffaut — Petunia Advice
• Site : Jardiland — Petunia Guide
• Site : Gardeners' World — Petunia Guide
• Site : Gerbeaud — Petunias and Surfinias
• Forum : Forum-Jardin — Petunias and Surfinias
• Forum : Au Jardin — Petunias

🎓 Courses and Webinars

• Formation : Professional cultivation of petunias — ISHS
• Description : Webinar on professional cultivation techniques.
• Lien : ISHS
• Formation : Variety selection of petunias — Danziger
• Description : Training on new varieties and their adaptation.
• Lien : Danziger
• Formation : Disease management in petunia cultivation — GPN Magazine
• Description : Webinar on the prevention and treatment of diseases.
• Lien : GPN Magazine
• Formation : Sales and marketing of flowering plants — CPMA
• Description : Training on the marketing of petunias and surfinias.
• Lien : CPMA