Petunia
Petunia
Scientific Name: Petunia spp.
Common Names: Petunia
Native to: Native to South America (mainly Argentina, Brazil, and Uruguay)
Lighting Requirements: Full sun. Petunias thrive in bright, direct sunlight and require at least 6 hours of sun per day for optimal growth and blooming.
Height: 6 to 18 inches
Width: 12 to 18 inches
Winter Look: Typically grown as an annual in colder climates, dying after the first frost.
Seasonal Interest: Spring to fall, with peak blooming in spring
Drought Tolerance: Moderate. Petunias prefer consistent moisture but can tolerate brief periods of drought once established. However, they perform best with regular watering.
Soil Requirements: Well-draining, fertile soil with good organic matter
pH Range: 6.0 to 7.0 (slightly acidic to neutral)
Hardiness Zones: USDA Zones 10 to 11 (grown as an annual in colder zones)
Deer Resistance: Low; deer candy
Attracts: Bees, butterflies, and hummingbirds
Potential Issues: Susceptible to aphids, spider mites, whiteflies, and fungal diseases such as powdery mildew. Overwatering can lead to root rot.
Notes: Petunias are among the most popular bedding plants, known for their vibrant, colorful flowers in various shades, including purple, red, pink, white, blue, and yellow. They are commonly grown in containers, hanging baskets, flower beds, and window boxes, adding brilliant color to gardens from spring to fall. Petunias are generally low-maintenance and easy to grow, but they require regular deadheading to maintain their appearance and encourage continuous blooming. They thrive in full sun and well-drained, fertile soil and benefit from consistent watering during dry spells. Petunias can be grown from seed, but most are purchased as young plants due to their relatively short growing season.
They prefer mild temperatures of the spring and fall. They struggle in the summer.
There are quite a few varieties of petunias out there. I like the newer 'Wave' Petunias.
Most of them seem to get leggy by mid-summer and slow down on blooming. I may have just picked up varieties that struggled, but I am not sure.
I much prefer Petunia's cousin Calibrachoa (Million Bells). It was recently recognized as a separate genus that behaves much like Petunias.