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A picture of a Petunia


Petunia spp.

4220 - Thun - Petunia by Andrew Bossi (CC BY-SA 2.5)

Full Sun
Easy care
Moderate watering


RHS hardiness


Minimum temperature

Expected size









  • spring
  • summer
  • autumn
  • winter

This plant has no fragrance

More images of Petunia

Petunia flower
Petunia flower
Petunia flower
Petunia flower
Petunia flower

Petunia Overview

The genus Petunia has about 40 species of spreading to erect plants. They are multi-branching, with sticky hairy stems and ovate to lance-shaped dark green leaves. The showy solitary flowers are 5 lobed, fluted, single or double trumpet-shaped and borne on the upper leaf axils of the plant. Petunias are generally thought of as annuals, as they are mostly grown as such, but they are mostly perennials. Many cultivars are derived from P. axillaris, P. integrifolia, and P. violacea – and are split into two groups: Grandiflora petunias (with very large flowers, generally up to 10cm across) and Multiflora petunias (bushier and with many smaller flowers, around 5cm in size).

Common problems with Petunia

How to harvest Petunia

Seed can be collected once the flower has fallen off and the seed pod has turned brown. Pick it and store before the pod splits open.

How to propagate Petunia


Take softwood cuttings in summer.


Sown under glass or directly in the soil in autumn or mid-spring.

Special features of Petunia

Attracts bees

Pot plant

Attractive flowers

Other uses of Petunia

Border, hanging basket, fragrance, container, window-box

Ornamentals to Plant Outside in April

Provided the ground isn't frozen or water-logged, plant these varieties.

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Flowers to Sow or Plant Under Cover in March

Sow these seeds and pot up these tubers to get an early start on the year.

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