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Belonging to the Petunia genus, Petunia has a botanical name of Petunia.

Although some species of petunia are tropical perennials, today’s hybrids are usually grown as annuals.

Petunias are vigorous growers and and prolific bloomers; they like sun, some are fragrant and attract hummingbirds and butterflies.

The blooms display an average of 5 petals. Petunia is a flower / ornamental annual, it will last but a year in its native climate. Petunia normally grows to a spreading habit with a max height of 7.02 inches (that's 18.0 cm metric). Try planting Petunia if you'd like to attract butterflies and bees to your garden. Popular varieties of Petunia with home gardeners are Cascading, Easy Wave™, Wave Purple, dwarf bedding mixed colors and Tidal Wave™.

Argentina is believed to be where Petunia originates from.

Being a fairly low maintenance plant, Petunia is normally quite easy to grow provided a minimum level of care is given throughout the year. It will be helpful to note the correct soil, sun and water needs of this plant to ensure that this plant thrives.

This plant info is provided by the myfolia gardener's wiki. All details about Petunia have been kindly provided by our members.

How to grow Petunia

  • Full Sun

    OR +
  • Partial Sun

  • Medium

Enjoys a full sun / partial sun position in your garden and remember to water moderately. Zone 5 to 9 are typically the USDA Hardiness Zones that are appropriate for this plant (although this can vary based on your microclimate). A soil ph of between 5.5 and 7.0 is ideal for Petunia as it does best in weakly acidic soil - neutral soil. Keep in mind when planting that Petunia is thought of as half hardy, so although it can survive a small mild cold snap, it is wise to ensure that this plant is protected from frost damage.

Growing Petunia from seed

Petunia seed needs light to germinate, so don’t cover the seed.

By our calculations*, you should look at sowing Petunia about 77 days before your last frost date .

Transplanting Petunia

As Petunia is half hardy, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.

Companion plants for Petunia

These plants have been known to grow well alongside Petunia so consider planting:

Repellent plants for Petunia

These plants will not grow well with Petunia so avoid planting these within close proximity:

Common Petunia problems

These problems, diseases and pests are known to affect Petunia plants:

Other names for Petunia

Hybrid Petunia

Petunia x hybrida, Petunia x, Petunia hybrida

Latest Petunia Reviews

  • 14 Oct 2013

    Amarylis Amarylis's Petunias planted up on balcony was Reviewed day 153

    I have had a great show from the 2 kinds of Petunias I planted on the balcony this year! ‘Frenzy Royal Velvet’ & ‘Frenzy Waterfall’ flowered extremely well up till the middle of Sept when they got mildew. I put them out as plug plants in June, they flower

    4 stars

  • 11 Oct 2012

    Russell_G Russell_G's Pertunia 'Super Cascade' F1 Hybrid was Reviewed day 235

    Great seeds that gave me an abundance of flowers from each plant. Beautiful colours and the blooms started early June and continued all the way through till the end of September.

    5 stars

  • 05 Jun 2012

    goddessjoy goddessjoy's Pinstripe Petunia was Reviewed day 60

    This petunia is wonderful. It is a reliable, profuse bloomer and is holding up nicely in direct, hot sun.

    5 stars

  • 05 Jun 2012

    goddessjoy goddessjoy's Black Petunia was Reviewed day 60

    This petunia is more profuse in its blooming habit than any other petunia I have ever grown. It just won’t stop! Beautiful flower color with no striping at all. Is holding up nicely in my hot, dry, sunny patio garden.

    5 stars

  • 14 May 2011

    macchick macchick's Petunia 'Blue Wave Hybrid' was Reviewed day 69

    These wave petunias are easy to start from seed and flower all summer without much intervention.

    5 stars

See all Petunia reviews and experiences »

Petunia care instructions

How long does Petunia take to grow?

These estimates for how long Petunia takes to sprout, grow and harvest are from real observations from real gardeners, right around the world. Start logging and journaling your observations to participate!

When should I plant Petunia?

Our when to plant Petunia estimates are relative to your last frost date. Enter your frost dates and we'll calculate your sowing and planting dates for you!


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