Petunia.

En un coup d'œil

Care level

Easy

Plant type

Annual

Light

Full sun

Indoor light

direct

Water

Every 2 to 4 days

Mature size

30 to 60 cm

Growth rate

fast

Hardiness

USDA 9 to 11

Bloom time

Late spring to late autumn

Entretien

Keep your petunias happy by deadheading faded blooms to encourage constant new growth. Watch for wilting which signals a need for water, but ensure the soil drains well to prevent root rot. They appreciate a sunny spot to perform their best.

Watering

Water deeply when the top inch of soil feels dry to the touch.

Feeding

Use a balanced liquid fertilizer every two weeks for consistent blooms.

Pruning

Pinch back stems to keep the plant bushy and remove spent flowers.

Repotting

Usually grown as annuals, so repotting is rarely needed.

Soil

Well draining, fertile, slightly acidic soil

Soil pH

6.0 to 7.0

Temperature

10 to 30°C

Humidity

40 to 60%

Drought tolerance

moderate

Lifespan

Annual, or tender perennial in frost free climates.

Fragrance

strong

Deer and rabbits

low

Sécurité

People

The plant is generally considered non toxic to humans, though it is not meant for consumption.

Pets

Petunias are generally considered non-toxic to cats and dogs.

Children

Keep the plant away from small children to prevent accidental ingestion of leaves or flowers.

Contact allergens

Some people may experience mild skin irritation from the sticky, glandular hairs on the stems and leaves.

Airborne allergens

The pollen is generally not a major allergen, but sensitive individuals may react to the heavy fragrance of some varieties.

Edibility

While not highly toxic, petunias are not considered edible and ingestion can cause mild stomach upset.

Comment l'identifier

• trumpet shaped colorful flowers
• sticky glandular hairy foliage
• ovate leaves with entire margins
• trailing or mounding growth habit

Height

0.15 to 0.45m

Spread

0.3 to 0.9m

Leaves

green, deciduous

Flowers

purple, pink, white, red, yellow, blue, 5 to 10cm

Problèmes courants

• Aphids — These tiny insects cluster on new growth and suck sap, often causing distorted leaves.
• Botrytis blight — A fungal infection that causes gray mold on flowers, especially during cool, damp weather.
• Tobacco mosaic virus — This virus causes mottled or stunted leaves and is often spread by handling.

La cultiver

Propagation

seed, cuttings

When to plant

spring

Overwintering

Bring containers indoors to a bright, cool spot before the first frost. Keep the soil barely moist until spring.

In containers

They are excellent for containers, but ensure the pot has good drainage and is at least 10 inches wide.

Pair petunias with plants that have similar feeding requirements to ensure they all stay healthy in the same container.

Bonnes associations

• Sweet Alyssum — They share similar water and light needs while providing a nice textural contrast.
• Geranium — These are classic container partners that thrive in the same sunny conditions.
• Verbena — Verbena adds a different flower shape that complements the trumpet blooms of petunias.

À éloigner de

• None notable — Petunias are generally easy to pair with most other annuals.

Espèces similaires

• Calibrachoa — Often called million bells, these look like miniature petunias and do not require deadheading.

Science

Family

Solanaceae

Genus

Petunia

Order

Solanales

Class

Magnoliopsida

Native range

South America.

Conservation

This is a cultivated hybrid and is not a species of conservation concern in the wild.

In their native habitat, they grow as short lived perennials in sunny, open areas.

Value to wildlife

nectar source

Pollinators

bees, butterflies, moths, hummingbirds

Uses

hanging baskets, container gardens, bedding plants, window boxes

Taxonomie vérifiée avec le GBIF.

Ce qu'on demande souvent

Do I need to deadhead my petunias?

Yes, removing spent blooms encourages the plant to produce more flowers throughout the season.

Why are my petunia leaves turning yellow?

This is often a sign of overwatering or a lack of iron in the soil.

D'où vient le nom

The genus name Petunia comes from the Tupi word for tobacco, as the plants are related. The species name hybrida indicates that modern garden varieties are crosses between different wild species.

Bon à savoir

• Petunias were first discovered in South America in the 18th century.
• The name comes from the Tupi word petun, which means tobacco.
• Modern petunias are complex hybrids developed from wild species.
• They are technically tender perennials but are grown as annuals in most climates.