Filler Annuals and Flowers

Filler annuals and flowers are the mounding, colorful workhorses of any container planting. They nestle between your thriller and spiller, filling in gaps with color, texture, and density. That's what gives a container its full, lush, finished look. Because you plant annuals fresh each season, you can experiment with new filler flowers every year. That keeps your container combinations feeling fresh from spring through frost.

The number of filler annuals you need depends on your pot size. A 12-inch pot typically needs one to two plants, while a 14-inch pot looks best with two to three. For an 18-inch pot, plan on three to five plants for full, even coverage. Larger containers of 20 inches or more may need four to six or more plants. That level of coverage gives an oversized pot a truly complete, abundant look.

A vibrant window box filled with red geraniums, Supertunia® Mini Vista® Violet Star Petunia, and white flowers sits against a white-framed window with tall green grasses - Photo Property of Garden Crossings LLC.
A cluster of vibrant Sunstar® Lavender Egyptian Star Flower (Pentas) blooms with pointed petals, densely packed for a lush and colorful presentation - Photo Courtesy of Proven Winners, Inc.A white pot with green foliage and vibrant light purple Sunstar® Lavender Egyptian Star Flower (Pentas) blooms - Photo Courtesy of Proven Winners, Inc. Decorative pot not included.

Sunstar® Lavender Egyptian Star Flower (Pentas)

$10.99
$10.99

Clusters of vibrant pink, star-shaped Sunstar® Red Egyptian Star Flower (Pentas) with dark green leaves, pink flowers can be seen below it - Photo Property of Garden Crossings LLCSunstar® Red Egyptian Star Flower (Pentas) features bright pink, star-shaped flowers with white centers and bold green leaves - Photo Property of Garden Crossings LLC

Sunstar® Red Egyptian Star Flower (Pentas)

$10.99
$10.99

A close-up of Superbells Magic® Double Grapefruit Calibrachoa shows layered pink, yellow, and peach blooms—ideal for adding vibrant color and pattern to hanging baskets. - Photo Courtesy of Proven Winners, Inc.A green pot displays Superbells Magic® Double Grapefruit Calibrachoa, bursting with lush foliage and an abundance of yellow and pink double blooms - Photo Courtesy of Proven Winners, Inc. Decorative pot not included.

Superbells Magic® Double Grapefruit Calibrachoa

$10.99
$10.99
Superbells® Magic™ Pink Lemonade Calibrachoa features clusters of pink, yellow, and white blooms among green leaves - Photo Property of Garden Crossings LLCA vibrant cluster of Superbells® Magic™ Pink Lemonade Calibrachoa blooms pink and yellow in sunlight, surrounded by lush green foliage and tall grasses - Photo Property of Garden Crossings LLC

Superbells Magic® Pink Lemonade Calibrachoa

$10.99
$10.99
Superbells® Blue Calibrachoa features petunia-like purple flowers with yellow centers and lush green foliage, forming a dense, vibrant display - Photo Courtesy of Proven Winners, Inc.

Superbells® Blue Calibrachoa

$10.99
$10.99

Close-up of vivid magenta flowers with yellow centers and lush foliage, accented by a pale pink bloom - Photo Property of Garden Crossings LLCSuperbells® Cherry Red Calibrachoa features vibrant magenta flowers with yellow centers and delicate veining - Photo Courtesy of Proven Winners, Inc.

Superbells® Cherry Red Calibrachoa

$10.99
$10.99
Two Superbells® Evening Star™ Calibrachoa flowers with yellow and dark purple centers are surrounded by green leaves. The petals have a soft texture, and water droplets can be seen on one lavender bloom - Photo Property of Garden Crossings LLCA cluster of vibrant Superbells® Evening Star™ Calibrachoa, mostly purple with yellow centers, is paired with orange blooms and a white-purple flower amid green leaves on a wooden background - Photo Property of Garden Crossings LLC

Superbells® Evening Star™ Calibrachoa

$10.99
$10.99

The Superbells® Holy Moly!® Calibrachoa features vibrant blooms with white petals splashed with bright yellow and pink, surrounded by green foliage - Photo Property of Garden Crossings LLCSuperbells® Holy Moly!® Calibrachoa features clusters of vibrant yellow flowers streaked with pink, set against dense green foliage - Photo Property of Garden Crossings LLC

Superbells® Holy Moly!® Calibrachoa

$10.99
$10.99

Close-up of Superbells® Over Easy™ Calibrachoa, showing white blooms with soft yellow centers and delicate, slightly ruffled petals - Photo Property of Garden Crossings LLCSuperbells® Over Easy™ Calibrachoa features clusters of small white blooms with yellow centers, highlighted by lush green leaves next to purple calibrachoa flowers - Photo Property of Garden Crossings LLC

Superbells® Over Easy™ Calibrachoa

$10.99
$10.99

Close-up of Superbells® Pink Calibrachoa, featuring vivid, petunia-like pink blooms with five petals and yellow centers amid lush green leaves. Yellow and deep red flowers are seen in the background - Photo Property of Garden Crossings LLCClose-up of Superbells® Pink Calibrachoa, featuring vibrant pink, petunia-like flowers with yellow centers and delicate veins, blooming among green foliage in a blue-gray pot, petals glistening with water droplets - Photo Property of Garden Crossings LLC. Decorative pot not included.

Superbells® Pink Calibrachoa

$10.99
$10.99
A cluster of vibrant red Superbells® Pomegranate Punch™ Calibrachoa flowers with dark centers and yellow stamens, surrounded by green leaves - Photo Courtesy of Proven Winners, Inc.A cluster of Superbells® Pomegranate Punch™ Calibrachoa displays vibrant red blooms with dark centers, contrasting beautifully against lush green foliage. Soft white flowers can be seen in the blurred background - Photo Property of Garden Crossings LLC

Superbells® Pomegranate Punch™ Calibrachoa

$10.99
$10.99
Cluster of Superbells® Yellow Calibrachoa features bright yellow blooms and lush green foliage - Photo Property of Garden Crossings LLCClose-up of Superbells® Yellow Calibrachoa. Bright yellow petals overlap gently, featuring a soft texture and subtle veins on the central flower - Photo Property of Garden Crossings LLC

Superbells® Yellow Calibrachoa

$10.99
$10.99

Close-up of Supercal® Premium Caramel Yellow Petchoa flowers—vivid yellow petals with orange-red veining radiate from dark centers, ruffled edges, and are set against lush green foliage - Photo Courtesy of Ball Horticulture, Inc.

Supercal® Premium Caramel Yellow Petchoa

$10.99
$10.99

Close-up of Supercal® Premium Cinnamon Petchoa, a petunia x calibrachoa hybrid, featuring vibrant orange-red petals with cinnamon gradients, dark centers, and green leaves in the background - Photo Courtesy of Ball Horticulture, Inc.

Supercal® Premium Cinnamon Petchoa

$10.99
$10.99
Supercal® Premium French Vanilla Petchoa displays pale yellow flowers with reddish-orange veins radiating from the centers, creating a vibrant and colorful pattern among green foliage - Photo Courtesy of Ball Horticulture, Inc.

Supercal® Premium French Vanilla Petchoa

$10.99
$10.99

Supercal® Premium Pearl White Petchoa features white flowers with pale yellow-green centers and delicate veins - Photo Courtesy of Ball Horticulture, Inc.

SuperCal® Premium Pearl White Petchoa

$10.99
$10.99

A cluster of Supercal® Premium Pink Mist Petchoa flowers showcases pastel pink blooms with yellow centers and lush green leaves, densely packed together in full bloom - Photo Courtesy of Ball Horticulture, Inc.Clusters of pastel pink Supercal® Premium Pink Mist Petchoa blooms with light yellow centers stand out against a dark background, with a few bright magenta flowers seen in the corner - Photo Property of Garden Crossings LLC.

Supercal® Premium Pink Mist Petchoa

$10.99
$10.99

Close-up of Supercal® Premium Purple Dawn Petchoa, a petunia-calibrachoa hybrid, showcasing vibrant pink blooms with dark veins and green foliage - Photo Courtesy of Ball Horticulture, Inc.A close-up of Supercal® Premium Purple Dawn Petchoa, its vibrant blooms held gently between two fingers, with more sun-loving flowers and lush green leaves in the background - Photo Property of Garden Crossings LLC.

Supercal® Premium Purple Dawn Petchoa

$10.99
$10.99
A lush cluster of Supercal® Premium Rose Pink Petchoa blooms with green leaves, flowering closely together in a garden setting - Photo Courtesy of Ball Horticulture, Inc.

Supercal® Premium Rose Pink Petchoa

$10.99
$10.99
Close-up of vibrant Supercal® Premium Sunray Pink Petchoa blooms, featuring yellow and red centers, surrounded by lush green leaves with more flowers visible in the background - Photo Property of Garden Crossings LLC.Close-up of vibrant Supercal® Premium Sunray Pink Petchoa blooms with yellow and dark-centered veins, set among lush green leaves and hints of other colorful flowers in the - Photo Property of Garden Crossings LLC.background.

Supercal® Premium Sunray Pink Petchoa

$10.99
$10.99
Close-up of Supercal® Premium Sunset Orange Petchoa flowers in full bloom with green leaves and a touch of pink. Vibrant petals feature rich color gradients and delicate textures - Photo Property of Garden Crossings LLC.A cluster of Supercal® Premium Sunset Orange Petchoa blooms in vibrant orange and yellow shades, set against green leaves. Their gradient petals create a lively display - Photo Property of Garden Crossings LLC.

Supercal® Premium Sunset Orange Petchoa

$10.99
$10.99

A planter box with Superlophus® Sunglow Texas Primrose (Oenothera), vivid purple petunias, and trailing green heat-tolerant plants set against a white lattice background - Photo Property of Garden Crossings LLC. Decorative pot not included.Superlophus® Sunglow Texas Primrose (Oenothera) features bright yellow, delicate flowers and slender green leaves. - Photo Courtesy of Proven Winners, Inc.

Superlophus™ Sunglow Texas Primrose (Oenothera)

$10.99
$10.99

A cluster of vibrant Supertunia Mini Vista® Ultramarine™ Petunia blooms with dark centers and delicate deep purple petals fills the frame - Photo Courtesy of Proven Winners, Inc.Three vibrant Supertunia Mini Vista® Ultramarine™ Petunias bloom among green leaves and a few white petunias, creating a colorful display - Photo Property of Garden Crossings LLC.

Supertunia Mini Vista® Ultramarine Petunia

$10.99
$10.99

Supertunia Vista® Fuchsia Petunia blooms in vibrant pink in the foreground, with rocks and soft purple-pink flowers behind—creating a vivid, layered garden - Photo Property of Garden Crossings LLC.A large flower pot brims with vibrant Supertunia Vista® Fuchsia Petunia blooms in pink, magenta, and white on a concrete walkway - Photo Property of Garden Crossings LLC. Decorative pot not included.

Supertunia Vista® Fuchsia Petunia

$10.99
$10.99