Introduction
There is a special kind of excitement that comes with watching the first broad, tropical leaves of a canna lily unfurl in the summer sun. These plants bring a sense of lush, exotic beauty to any backyard, turning a standard garden bed into a vibrant sanctuary. At Longfield Gardens, we love how cannas provide both height and high-impact color with very little effort. They are the ultimate "thriller" plants for containers and garden borders alike.
One of the most frequent questions we hear from gardeners is whether these stunning plants can withstand the local wildlife. If you share your outdoor space with deer, you know the frustration of seeing your hard work disappear overnight. Fortunately, cannas are a fantastic choice for those looking to balance a beautiful aesthetic with practical deer resistance. This guide will explain why deer usually leave cannas alone and how you can grow them successfully in your own landscape.
By understanding how cannas grow and what they need to thrive, you can create a garden that is both breathtaking and resilient.
Understanding Deer Resistance in Canna Lilies
When we talk about plants being deer resistant, it is important to remember that no plant is entirely "deer-proof." If deer are hungry enough and food sources are scarce, they may nibble on almost anything. However, canna lilies are widely classified as deer resistant because they are near the bottom of the preferred menu for most deer populations.
Deer tend to choose plants based on texture, scent, and ease of digestion. Cannas have several natural defenses that make them unappealing to these four-legged visitors. In most cases, a deer will walk right past a row of cannas to find something more tender or flavorful, such as a hosta or a daylily.
Because cannas grow quickly and produce a large amount of foliage, they are excellent for creating "living screens." Many gardeners use them to shield more vulnerable plants from view. This strategy uses the canna's natural stature and deer-deterrent properties to protect the rest of the garden.
Key Takeaway: While no plant is 100% deer-proof, canna lilies are highly deer resistant due to their tough texture and are rarely a preferred food source for local wildlife.
Why Deer Usually Skip Canna Lilies
To understand why cannas are so successful at resisting deer, we have to look at the physical makeup of the plant. Unlike the soft, succulent leaves of many spring bulbs or perennials, canna leaves are thick and fibrous.
Tough and Fibrous Foliage
The leaves of a canna lily have a leathery, almost waxy texture. To a deer, this is the equivalent of trying to eat a piece of thick cardstock or heavy fabric. It requires a lot of chewing and is not particularly easy to digest. Deer generally prefer tender "greens" that are high in moisture and easy to crunch. The structural fibers in canna leaves make them a lot of work for very little nutritional reward.
Lack of Appealing Scent
Some plants attract deer because they emit a sweet or grassy fragrance that signals "food." Cannas do not have a strong scent in their foliage or their flowers that attracts deer. While we find their bright blooms attractive, they don't produce the kind of olfactory cues that lead a deer to investigate them as a meal.
Substantial Height and Presence
As cannas grow, they become quite imposing. Tall varieties can reach five or six feet in height. This vertical presence can sometimes act as a physical barrier. Deer are cautious animals, and a dense wall of tall, flapping leaves can be intimidating or simply annoying for them to navigate through. For a dramatic backdrop, explore Tall Cannas.
Maximising Success in Areas with High Deer Pressure
If you live in an area where deer are particularly active, you can take a few simple steps to make your cannas even less tempting. Even though the plants are naturally resistant, a little extra strategy goes a long way.
Use the "Right Plant, Right Place" Rule
Start by placing your cannas in the center of a bed or toward the back of a border. By surrounding them with other deer-resistant plants, such as ornamental grasses, lavender, or salvia, you create a "distasteful" zone. When a deer encounters a large area filled with plants it doesn't like, it is much more likely to keep moving toward a neighbor's yard or a nearby wooded area.
Protecting Young Shoots
The only time a canna is truly vulnerable to deer is when the very first shoots emerge from the ground in late spring or early summer. These "pips" are more tender than the mature leaves. If you know you have high deer pressure, you might choose to spray a natural, scent-based deer repellent on the ground and the emerging tips for the first two weeks of growth. Once the leaves unfurl and toughen up, you can usually stop the treatments.
Container Gardening
One of the easiest ways to protect any plant from deer is to move it out of their reach. Cannas thrive in large pots and planters. Placing your cannas in containers on a raised deck, a porch, or a fenced-in patio adds an extra layer of security. This also allows you to bring the tropical beauty of cannas closer to your outdoor living spaces where you can enjoy them daily. Learn more about growing canna lilies in pots.
What to do next to protect your garden:
- Identify the paths deer usually take through your yard.
- Plant cannas as a "border wall" to redirect deer movement.
- Interplant cannas with aromatic herbs like rosemary or sage.
- Monitor new growth in the spring for any signs of early nibbling.
Selecting the Right Spot for Your Cannas
To get the most out of your canna bulbs (which are technically rhizomes), you need to give them the environment they love. A healthy, vigorous plant is always more resilient than one that is struggling. When cannas are planted in the right conditions, they grow rapidly and produce the thick, leathery leaves that deer find so unappealing.
Sun is Essential
Cannas are sun-worshippers. To produce those massive leaves and vibrant flowers, they need at least six to eight hours of direct sunlight every day. In cooler northern climates, full sun is a must. In very hot southern climates, they can handle a little bit of afternoon shade, but too much shade will result in "leggy" plants with fewer flowers.
Soil and Drainage
"Drainage" is a word gardeners use to describe how fast water moves through the soil. While cannas love moisture, they do not like to sit in stagnant, soggy earth for long periods, which can cause the rhizomes to rot. They prefer rich, fertile soil that holds some moisture but allows the excess to drain away. If you have heavy clay soil, adding some compost or organic matter can help improve the texture.
Give Them Space
Cannas are not shy about taking up room. Depending on the variety, you should space your rhizomes about one to two feet apart. Proper spacing ensures that air can circulate around the large leaves. This keeps the plants healthy and prevents issues like leaf rollers or fungal spots, which can occasionally happen in very humid, crowded conditions.
Planting and Caring for Canna Bulbs
Planting cannas is a straightforward process, but getting the timing right is the most important factor for success. Because these are tropical plants, they have no tolerance for frost. For step-by-step instructions, see this guide to planting canna lily bulbs.
Timing is Everything
Wait until the soil has warmed up and the danger of frost has completely passed before planting your canna rhizomes outdoors. In many parts of the US, this is usually in May or early June. A good rule of thumb is to plant them around the same time you would plant tomatoes or peppers. If you want a head start, you can plant them in pots indoors about four to six weeks before the last frost date and then move the established plants outside.
Planting Depth and Direction
When you look at a canna rhizome, you will see small bumps or points called "eyes." These are the growing points where the new stalks will emerge.
- Dig a hole about 4 inches deep.
- Lay the rhizome in the hole horizontally.
- If you can see the eyes, point them upward, but don't worry if you can't tell which side is which; the plant will figure it out!
- Cover with soil and water well to settle the earth around the rhizome.
Water Correctly, Not Constantly
Once cannas start growing, they are very thirsty plants. They have large leaf surfaces that lose moisture quickly in the sun. During the heat of the summer, you may need to water them deeply a few times a week. However, always check the soil first. If the top inch is dry, it's time to water. Deep watering encourages the roots to grow further down into the soil, making the plant more stable and drought-tolerant.
"Getting the depth and timing right is the secret to canna success. Plant them 4 inches deep once the soil feels warm to the touch, and you'll be rewarded with a tropical paradise by midsummer."
Deer-Resistant Companion Plants for Cannas
Creating a deer-resistant landscape is most effective when you use a variety of plants that deer dislike. Combining cannas with other resilient species creates a beautiful, layered look that stays intact throughout the season. See more ideas in this guide to companion plants for cannas.
Ornamental Grasses
Grasses like Miscanthus or Pennisetum offer a wonderful textural contrast to the broad leaves of cannas. Deer generally avoid ornamental grasses because the blades are often sharp, dry, and difficult to chew. The swaying movement of the grass also adds a dynamic element to your garden.
Aromatic Perennials
Plants with strong scents are a natural deterrent. Consider planting these around your cannas:
- Lavender: Its woody stems and strong perfume are highly unappealing to deer.
- Salvia: Most varieties have a sage-like scent that deer find offensive.
- Russian Sage: The silvery foliage and pungent aroma make it a "hard pass" for most wildlife.
Colorful Annuals
For extra pops of color at the front of your canna beds, try annuals that deer tend to ignore. Snapdragons, cleome (spider flower), and zinnias are excellent choices. Cleome, in particular, has a slightly "musky" scent and tiny spines on the stems that deer strongly dislike.
Winter Care: Storing Your Canna Rhizomes
Whether you need to dig up your cannas for the winter depends entirely on where you live. Cannas are tropical perennials, meaning they can stay in the ground year-round in warm climates (USDA zones 8-11). However, in zones 7 and colder, the ground freezes deep enough to kill the rhizomes. Use the canna growing zone guide to plan your approach.
At Longfield Gardens, we want you to enjoy your plants year after year. If you live in a cold climate, lifting and storing your cannas is a simple weekend project that ensures you have even bigger, better plants next summer.
How to Lift and Store Cannas
- Wait for Frost: Let the first light frost blacken the foliage. This tells the plant to go dormant and move its energy down into the rhizome.
- Cut Back: Cut the stalks down to about 2 or 3 inches above the soil line.
- Dig Carefully: Use a garden fork to gently lift the clumps out of the ground. Be careful not to slice through the rhizomes.
- Clean and Dry: Shake off excess soil and let the rhizomes dry in a shaded, frost-free area (like a garage) for a few days.
- Pack Away: Place the rhizomes in a box filled with slightly damp peat moss, perlite, or wood shavings. Store them in a cool, dark place (40-50°F) until spring.
By following these steps, you can preserve your favorite varieties and even divide the clumps in the spring to share with friends or expand your own garden. You can also review shipping information when planning a new spring order.
Conclusion
Gardening in an area with deer doesn't mean you have to sacrifice the bold, tropical look you love. Canna lilies are a resilient and beautiful solution for anyone looking to add high-impact color and height to their yard. Their tough, fibrous leaves and lack of appealing fragrance make them a reliable choice for deer-prone areas. By focusing on the basics—plenty of sun, warm soil, and proper winter care—you can enjoy these spectacular plants for years to come.
We are proud to help gardeners across the country bring more beauty to their homes with our high-quality flower bulbs and perennials. If you're ready to start your tropical garden journey, remember these key points:
- Cannas are naturally deer resistant due to their thick foliage.
- They need full sun and warm soil to thrive.
- You can easily store the rhizomes over winter in cold climates.
- Companion planting with aromatic herbs further deters wildlife.
Final Thought: Canna lilies are a rewarding, low-maintenance way to achieve a high-end garden look while keeping local deer at a distance. Give them a sunny spot and they will do the rest of the work for you.
FAQ
Will deer eat canna lily flowers even if they don't eat the leaves?
While it is much less common than with other plants, a curious deer might occasionally nibble a flower. However, because the stalks are thick and the foliage is unappealing, deer usually don't spend much time investigating cannas. If they do take a bite, they rarely return for a second helping.
Are cannas toxic to pets or livestock?
Cannas are generally considered non-toxic to dogs, cats, and horses according to the ASPCA. However, it is always a good practice to prevent pets from chewing on garden plants, as ingesting any large amount of fibrous plant material can cause mild stomach upset.
Can I grow cannas in the shade to hide them from deer?
Growing cannas in the shade is not recommended because the plants will become weak and floppy. Shaded cannas also produce much softer, thinner leaves, which might actually be more appealing to a hungry deer. It is better to plant them in full sun where they can develop their natural, tough defenses.
How do I know if my canna has been eaten by a deer or a bug?
Deer damage usually looks like a clean, jagged tear or a completely missing leaf or stalk. Bug damage, such as from canna leaf rollers, usually looks like small holes, tattered edges, or leaves that are rolled up with silk-like webbing. If you see large sections of the plant missing overnight, it is likely a deer or a rabbit.
