The Best Tall Plants for Containers

Virtually any plant can be grown in a container—provided that the container is large enough. However combining plants in containers takes a little finesse. A general formula for success? Thrillers, spillers and fillers. This involves combining a tall (thrilling!) focal point plant with something that spills over the side of the container, to soften the lines, and finishing with shorter filler plants, in between. Here are some great choices for "thriller" plantings.

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    Agave americana 'Variegata' in container
    Neil Holmes/ Oxford Scientific/ Getty Images

    If you garden in a hardiness zone above 6 or 7, you can't go wrong with a succulent plant as your focal point. Dramatic and very forgiving, if you are a little forgetful about watering.

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    Love Lies Bleeding (Amaranthus caudatus)
    Marie Iannotti

    A tall amaranth, like 'Love Lies Bleeding' (Amaranthus caudatus) or 'Perfecta' (Amaranthus tricolor), adds color and drama. These are annual plants, so you will either need to start seed early or buy plants every year.

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    American arborvitae (Thuja occidentalis)
    DEA/RANDOM / Getty Images

    An evergreen as the centerpiece of a container is elegant, classic, and very low maintenance. Arborvitae hold their conical shape without any pruning. Caution, they are deer candy.

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    Potted Bamboo
    Alexandre Petzold / Getty Images

    Bamboo can be a nightmare in the garden, traveling faster than you could possibly keep up. But in a container, bamboo is a conversation piece. Most are hardy enough to survive the winter in their pots.

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  • 05 of 21
    Big bluestem (Andropogon gerardii)
    CC BY-SA 2.0/Flickr/Matt Lavin

    Grasses may not be quite as invasive as some bamboo plants, but they do spread by runners. Big Bluestem is a lovely 3 season plant made all the lovelier by confining it to a container. Make sure it's a large container, or Big Bluestem will crowd out the other plants.

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    Bougainvillea
    Christopher John Imperial / EyeEm / Getty Images

    Bougainvillea are only hardy in zone 9 and up, but you can either grow it as an annul, or bring it indoors for the winter. These are actually vines, not tall plants, so you'll need to provide some support.

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    boxwood topiaries
    Photos Lamontagne/ Photolibrary/ Getty Images

    Boxwood can be formal or funky. The real fun of using box is that you can trim it to be anything you want. If you'd like to exercise your creative flair, try a boxwood topiary.

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    Cabbage tree (Cordyline indivisa)
    tanetahl/Flickr/CC BY-2.0

    Cordyline indivisa really does look like a small palm tree and makes an intriguing focal point in a container. It is not hardy below zone 9, but you can bring it indoors as a houseplant, for the winter

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  • 09 of 21
    Growing Cannas
    Marie Iannotti

    Canna plants add an instant tropical flair, especially the new, colorful varieties. You can buy plants or start the tubers in late winter, so that they will be ready to show off, when the weather warms up. Then store the tubers indoors, for next season.

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    Dracaena reflexa
    GeoStock / Getty Images

    Dracena plants can grow upwards of 10 ft. tall in containers and there are many to choose from. They are not hardy, and would need to be moved indoors for winter. But outdoors they are carefree, even growing in partial shade.

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    Dwarf Alberta spruce (Picea glauca)
    CC BY-SA 2.0/Flickr/F.D. Richards

    Dwarf Alberta spruce is a gorgeous conical evergreen with dense, bright green needles. It is a bit scratchy, so wear gloves when working around it. Choose a small tree when first planting. The term "dwarf" simply means it is slow growing. With time - a lot of time - it will outgrow you.

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    Elephant Ears (Colocasia esculenta)
    Marie Iannotti

    Elephant Ear manages to be both imposing and fun at the same time. There are several new colorful varieties available. However, like cannas, you will either need to buy a plant, which can be expensive, or start your tubers early in the season and then overwinter them indoors.

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  • 13 of 21
    Feather reed grass (Calamagrostis x acutiflora) 'Overdam'
    Roger Smith / Getty Images

    Calamagrotis is a cool season grass, which means it is an early riser in the spring and blooms early in the season. After flowering, it remains upright and tall, not floppy or weepy like so many other grasses. So they are perfect for the center of a container.

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    Purple Fountain Grass (Pennisetum 'rubrum')
    Photo: © Marie Iannotti.

    Purple fountain grass looks good all season, with its burgundy leaves, spiky purple flowers and purple-tinged seed pods. It has a wonderful way of swaying in a breeze and adding a rush of sound to your planting.

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    Fuchsia plant
    sasaforking / Pixabay / CC By 0

     

    For a container in a shady spot, you can't do better than a fuchsia. These plants bloom all season long, with no deadheading. Look for an upright variety, if you want it as a center focal point.

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    Hardy Hibiscus
    Bill Brennan / Getty Images

    Hibiscus look tropical, but most varieties are very hard. They are a multi-branched shrub, but can easily be trained into a tree or standard. Even as a tree, they will be covered in flowers for weeks on end.

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    New Zealand Flax (Phormium tenax and hybrids)
    © Marie Iannotti

    Phormium are spiky carefree plants that add a casual look to containers. The leaves will gracefully bend downward, but not enough to cover plants positioned under it. You'll have a wide variety of colors to choose from, too.

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    Cordyline
    David Q. Cavagnaro / Getty Images

    Similar to the Cabbage tree, but the palm lily Cordyline is a bit more refined and makes an elegant focal point in a container. you can over-winter it indoors and roll it back out in the spring.

     

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    Princess Flower (Tibouchina urvilleana)
    CC BY-2.0/Flickr/Forest and Kim Starr

    If you love the tropical look, Princess flower is a lovely evergreen shrub with stunning purple flowers all season.You will also find it called the Purple Glory Flower. It is only hardy to zone 9, but once again, it makes a nice houseplant.

     

  • 20 of 21
    Potted Bay Tree
    VisitBritain/Martin Brent

    Bay trees are not just beautiful, they are functional; you can pluck fresh bay leaves right from your container. Bay is slow growing in containers.It will take several years to reach tree size. You prune it into a topiary or leave it in its natural shrubby shape. It is not hardy, but over-winters well indoors.

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    Yucca Plant
    CC BY-SA 2.0/Flickr/Megan Hasen

    Yucca plants are about as hardy as you can get and the newer varieties are pretty enough for the focal point of your container. They get quite wide, so start with a good sized container. They don't always bloom in containers, but many people choose to cut the flower stalk off anyway and just focus on the spiky foliage.