6 Best Trailing Plants for Window Boxes

Trailing plants look great when they are flowing out of window boxes. Which plants should you consider?

Window boxes loaded with cascading plants and flowers are truly beautiful. 

Containers brimming with color and vitality enhance any home’s curb appeal. Adding window boxes also injects individuality into the space. From the design of the box to the plants and flowers you select to plant in them, everything works together to give your home personality and flair. On top of that, trailing plants generally have a pleasant and gentle smell that fills the air around the house. 

Take a look at this list of the best trailing plants for your window boxes!

1. Nemesia (Nemesia Strumosa)

Nemesia blossoms are tiny and come in a variety of hues. Four petals spread out from a huge lobed petal on the blossoms. Their look is sometimes likened to that of an orchid. The robust shrub produces so many flowers during warm weather that the foliage is frequently obscured. Nemesia typically grows to be up to 12 inches tall. The plant has a tendency to flop and flow downhill as it matures.

The blue or white blooms of nemesia strumosa are about one inch in diameter. The plant is floppy and grows to be approximately 2 feet tall and 1 foot wide. The blossoms tend to spill over the edges of the window box and drop down in a beautiful cascade.

For the optimum flower output, place them where they will get full light. It’s important to keep the soil wet but not damp.

beautiful and colorful nemesia strumesa flowers

2. Begonia (Begonia Semperflorens)

The hanging begonia (begonia semperflorens) has variegated leaves and rose-like blossoms in red, white, yellow, pink, or orange. From July through October, the bright shrub blooms profusely.

It is one of the most shade-tolerant plants, preferring early light and dappled shade in the afternoon. Begonias are a perennial in USDA zones 9 to 10 and an annual in the rest of the country.

Begonias are deer-resistant, so you don’t have to worry about deer walking up to the house to graze your window boxes like a banquet.

beautiful red begonia semperflorens in a wooden cart

3. Sweet Potato Vine (Ipomea Batatas)

Some people dislike flowers in their window boxes. Instead, they love the simplicity and beauty of basic foliage. The sweet potato vine is an ideal choice. 

This plant has richly colored foliage that comes in a range of hues. The leaves of the margarita cultivar have a rich purple color. The sweetheart variety is recognized for its lovely gray, pink, and green tri-color leaves. Some leaves are chartreuse in the sun and mint green in the shade.

The sweet potato vine prefers a full-sun location, with some light shade in the afternoon, and consistently damp soil. It doesn’t need much to thrive and is simple to cultivate once started.

Many individuals shear the vines into designs to give their home’s façade a cottage feel. To create a diversified window box, some homeowners pair blooming plants like petunias and begonias with the sweet potato vine.

indigo leaves of sweet potato vines

4. Coral Bells (Heuchera)

Coral bells (heuchera) add texture and charm to any container garden. It is not a fussy plant, and it doesn’t mind whether you put it in the shade or in direct sunlight.

Coral bells are named after the spikes of tall, bell-shaped blossoms that show in late spring to early summer. They are as striking as the deep purple or burgundy-colored leaves. Flowers come in a variety of hues, from white and pink to pale coral and deep crimson. 

The blooms are high in nectar, attracting hummingbirds and butterflies. Coral bells are best planted in the late autumn or early spring, and they grow slowly, making them an excellent choice for window boxes, pots, and borders.

Late-blooming varieties are available.

rich red colored coral bells flowers

5. Fuchsia

Fuchsias are native to Central and South America, where they thrive in the chilly and damp air of the Andes. In other areas of the world, this plant thrives in bright, filtered light. Daytime temperatures need to stay below 80 degrees Fahrenheit to achieve a healthy bloom.

Botanists have developed thousands of different kinds of fuchsia. The most popular varieties feature multi-colored flowers that dangle and droop elegantly from baskets, planters, and pots. Fuchsia plants, which are often trellised in the garden, may be bushy or vining and trailing.

Fuchsia blooms are a delicious feast for pollinators, so if you’re planting them outdoors, anticipate plenty of bees and hummingbirds.

bright fuchsia flowers under the heat of the sun.

6. Million Bells

Million bells is an annual flower that blooms continuously from spring to the first frost without the need for deadheading. It is popular because of its thick trailing habit that pours beautifully over the edges of pots and planters. 

Many of the flowers include veining or colored throats that contrast with the predominant petal color. The plant has bright green, oval, and compact leaves.

Million bells plants like a lot of sunshine and rich, wet soil. But they are also drought-resistant, so they are a great addition to containers and rock gardens with poor drainage.

Hummingbirds and butterflies are attracted to this plant.

colorful and assorted million bell flowers and vines
Phillis Butler
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