Alphabetical Plant Listing

Plant Families / Ruellia

Refine By

thumb grid img


Ruellia can be perennials or shrubs, with flaring, bell-shaped flowers and often attractive foliage. Native from tropical America, Africa, and Asia, they are best used in informal areas of the garden. Beyond their hardiness range, they are commonly grown in greenhouses.

Compare All Ruellia


Season of Interest
article image

Ruellia brittoniana (Mexican Petunia)

Ruellia brittoniana (Mexican Petunia) is a shrubby perennial boasting a profusion of petunia-like, vibrant lavender-blue flowers, 2 in. across (5 cm), from midsummer to fall. Borne solitary or in clusters at the tips of purplish stems, they rise above the foliage of lance-shaped, glossy green leaves. Very showy, they are attractive to butterflies, bees and other pollinators.

Read More
article image

Ruellia caroliniensis (Carolina Wild Petunia)

Ruellia caroliniensis (Carolina Wild Petunia) is an unbranched, spreading perennial boasting a profusion of trumpet-shaped, petunia-like, light purple flowers borne in axillary clusters of 2-4. Blooming for weeks from early to late summer, the blossoms have a slender corolla tube and 5 petal-like lobes. Each blossom lasts a day or two, but new flowers form in succession. They provide nectar for bees and butterflies.

Read More
article image

Ruellia elegans (Red Ruellia)

Ruellia elegans (Red Ruellia) is a showy annual boasting a profusion of bright scarlet trumpet shaped flowers, 2 in. across (5 cm) on 6-8 in. wand-like stems (15-20 cm). Blooming for months from late spring until frost, they are held upright above a compact mound of soft green, semi-fuzzy foliage. They attract butterflies and hummingbirds.

Read More
article image

Ruellia humilis (Wild Petunia)

A widespread North American native, Ruellia humilis (Wild Petunia) is a herbaceous perennial of upright to somewhat sprawling habit boasting a profusion of tubular, bell-shaped, petunia-like, lavender to purple flowers, 3 in. long (7 cm). Blooming for months from late spring to fall, the blossoms are borne singly or in clusters in the upper leaf axils.

Read More
article image

Ruellia squarrosa (Water Bluebell)

Ruellia squarrosa (Water Bluebell) is a low-growing, frost tender perennial with petunia-like, crepe-paper, violet-blue flowers in summer and ruffled, willowy, dark purplish-green leaves. Favored by water gardeners, it is often grown as an aquatic plant in water gardens or small ponds. It also does fine in a rather dry garden and can be grown as a groundcover.

Read More

Refine By

Find your Hardiness Zone

Find your Climate Zone

Find your Heat Zone


Create a membership account to save your garden designs and to view them on any device.

Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.

Join now and start creating your dream garden!

Create a New Collection

Optional. For your reference.

Move Selected Plants to a Different Collection

Delete Collection

This field is required.

Rename Collection

This field is required.