Table of Contents
- Introduction
- Understanding Canna Lily Rhizomes
- Choosing the Best Location
- When to Plant Canna Lilies
- Preparing the Planting Area
- How Do You Plant Canna Lily Bulbs in the Ground
- Planting Canna Lilies in Containers
- Starting Cannas Indoors for an Early Start
- Caring for Your Canna Lilies
- Managing Pests and Challenges
- Overwintering Canna Lilies
- Designing with Canna Lilies
- Why Quality Matters
- Conclusion
- FAQ
Introduction
Imagine stepping into your backyard and feeling like you have been transported to a lush, tropical paradise. Cannas are the secret to creating that getaway atmosphere right at home. With their oversized, banana-like leaves and brilliant, exotic blooms, they bring an undeniable energy to any landscape. At Longfield Gardens, we love how these fast-growing plants can transform a simple garden bed into a spectacular focal point in just a few months.
If you are wondering how do you plant canna lily bulbs to get the best results, you have come to the right place. This guide is designed for gardeners of all levels who want to master the art of growing these summer showstoppers. We will cover everything from choosing the right spot and preparing the soil to the specific steps for planting both in the ground and in containers.
Getting these plants into the ground is an easy and rewarding project. Once you understand their simple needs for warmth, water, and sun, you will be well on your way to a season of vibrant color. Planting canna lilies is one of the most effective ways to add dramatic height and texture to your outdoor space with very little effort.
Understanding Canna Lily Rhizomes
Before we dig in, it is helpful to know exactly what you are planting. While most gardeners call them "bulbs," cannas actually grow from rhizomes. A rhizome is a thick, fleshy underground stem that stores energy for the plant. If you look closely at a canna rhizome, you will see small bumps or points called "eyes." These eyes are where the new stems and leaves will emerge.
When your shipment arrives from us, you might notice that the rhizomes look like knobby pieces of ginger. This is perfectly normal. Some may already have small green sprouts, while others will be dormant. Both types are ready to grow as soon as they meet warm soil and moisture. For shipping details, see our Shipping Information page.
Choosing the right variety is the first step in your planting journey. Cannas come in a wide range of sizes, from dwarf varieties that stay around two feet tall to giants that can tower over eight feet. Their foliage is just as diverse as their flowers. You can find leaves in shades of bright green, deep burgundy, bronze, or even variegated patterns with stripes of gold and white.
Choosing the Best Location
Canna lilies are sun worshippers. To get those iconic, large flowers and healthy leaves, you need to pick a spot that receives plenty of direct light. A location with six to eight hours of full sun is ideal. While they can grow in partial shade, the plants may become leggy, and you will likely see fewer blooms.
Another factor to consider is wind protection. Because cannas have such large, broad leaves, they can sometimes act like sails in a strong breeze. If your garden is in a particularly windy area, try to plant them near a fence, a wall, or a sturdy group of shrubs. This helps prevent the leaves from shredding, keeping the plant looking its best all season.
Cannas are not picky about soil type, but they do have a preference for richness and moisture. They are "heavy feeders," meaning they appreciate soil that is packed with organic matter. If your soil is sandy or heavy clay, you can easily improve it by mixing in some compost or well-rotted manure before you start planting.
Key Takeaway: Success with cannas starts with sun and soil. Find a bright spot with at least six hours of sunlight and enrich the earth with compost to give your rhizomes the nutrients they need to thrive.
When to Plant Canna Lilies
Timing is perhaps the most important part of learning how do you plant canna lily bulbs. Because these are tropical plants, they have no tolerance for frost. If the soil is too cold and wet, the rhizomes may sit dormant for too long or even rot before they have a chance to grow.
The best rule of thumb is to wait until the danger of frost has completely passed. A great indicator is the temperature of the soil itself. You want the soil to be at least 60°F before the rhizomes go into the ground. In many regions, this is the same time you would feel comfortable planting tomatoes or peppers.
If you live in a northern climate with a short growing season, you do not have to wait for the weather to clear to get started. You can give your cannas a "head start" by planting them in pots indoors about four to six weeks before the last frost date. If you are not sure which zone you garden in, the USDA hardiness zone map can help. This gives the plants time to develop roots and small shoots so they are ready to take off the moment they are moved outside.
Preparing the Planting Area
A little bit of preparation goes a long way in ensuring your cannas reach their full potential. Start by clearing the area of any weeds or grass. Use a garden fork or a shovel to loosen the soil to a depth of about 8 to 12 inches. This makes it easier for the new roots to spread out quickly.
Once the soil is loose, spread a two-inch layer of compost over the surface. Use your tool to mix it into the top several inches of soil. If your garden has poor drainage and water tends to stand for a long time after a rain, you can create a slightly raised mound for your cannas. This keeps the rhizomes from sitting in waterlogged soil while still allowing them easy access to the moisture they love.
What to Do Next: Pre-Planting Checklist
- Check your local frost dates to ensure the weather is warm enough.
- Confirm the planting site gets at least six hours of direct sun.
- Loosen the soil and mix in organic matter like compost.
- Gather your tools: a small trowel, a garden hose, and your rhizomes.
How Do You Plant Canna Lily Bulbs in the Ground
Now that your site is ready and the weather is warm, it is time to plant. The process is quick and simple. If you follow these basic steps, your cannas will have the best possible start.
Step 1: Dig the Hole
Dig a hole that is about 4 inches deep. If you are planting multiple cannas, consider the mature size of the variety you chose. For tall varieties, space the holes about 1-2 feet apart. For dwarf varieties, you can space them closer, around 1 foot apart. This spacing ensures every plant has enough room for air to circulate and for the roots to expand.
Step 2: Position the Rhizome
Place the rhizome into the hole horizontally. Look for the "eyes" or any small sprouts and point them upward. Do not worry if you cannot tell which side is the top; canna lilies are very resilient and the shoots will eventually find their way toward the sunlight even if they start off sideways.
Step 3: Cover and Firm
Fill the hole back in with soil. You want the rhizome to be covered by about 2 to 3 inches of soil. Gently press down on the soil with your hands to remove any large air pockets. You do not need to pack it down hard; a light touch is enough to ensure the soil is in contact with the rhizome.
Step 4: Water Thoroughly
Immediately after planting, give the area a good soaking. This settles the soil around the rhizome and "wakes up" the plant, signaling that it is time to grow. After this initial watering, you can wait until you see the first green sprouts before you begin a regular watering schedule.
Key Takeaway: Plant canna rhizomes 4 inches deep and 12–24 inches apart. Always place them horizontally with the eyes facing up, and water them well right after you finish.
Planting Canna Lilies in Containers
Cannas are fantastic candidates for growing summer bulbs in containers. Their upright growth habit makes them a perfect "thriller" or focal point for large pots on a porch, patio, or balcony. Planting them in containers also makes it easy to move them around to catch the best sun or to bring them inside if a late cold snap occurs.
When choosing a container, size matters. Cannas grow quickly and develop a substantial root system. For a single standard canna, choose a pot that is at least 12 to 18 inches in diameter. Ensure the pot has drainage holes at the bottom, as the rhizomes should never sit in stagnant water.
Use a high-quality potting mix rather than garden soil. Potting mix is lighter, drains better, and is usually free of weed seeds. Fill the container about halfway, place the rhizome horizontally with the eyes up, and cover it with 3 inches of mix. Leave an inch or two of space at the top of the pot to make watering easier.
Starting Cannas Indoors for an Early Start
If you want flowers as early as possible, starting your rhizomes indoors is a great strategy. This is especially helpful in Zones 3 through 6 where the summer season is shorter. By starting indoors, you can have plants that are already a foot tall by the time the weather is warm enough to move them outside.
To do this, use small individual pots or a seed-starting tray. Fill them with damp potting mix and plant the rhizomes just an inch or two deep. Keep the pots in a warm spot, such as near a sunny window or on a heat mat. The goal is to keep the soil temperature around 70°F to encourage fast sprouting.
Once the danger of frost has passed, you will need to "harden off" your plants. This means gradually introducing them to the outdoor environment. Place them in a sheltered, shady spot for a few hours a day, slowly increasing their time outside and their exposure to direct sun over a week. This prevents the leaves from getting sunburned and helps the plant adjust to the wind and temperature changes.
Caring for Your Canna Lilies
Once your cannas are in the ground and growing, they are relatively low-maintenance. However, because they grow so much in a single season, they do require a few basics to look their best.
Watering Needs
Cannas are thirsty plants. In the heat of the summer, they use a lot of water to maintain those large, lush leaves. Try to keep the soil consistently moist. If you are growing them in containers, you may need to water them every day during the hottest weeks. A layer of mulch around the base of the plants can help retain moisture and keep the roots cool.
Fertilizing for Success
Because cannas grow so fast, they need plenty of fuel. We recommend using a balanced, slow-release fertilizer at planting time. You can also follow up with a water-soluble fertilizer every few weeks during the peak growing season. This ensures the plant has the nutrients it needs to produce those tall stems and vibrant flowers.
Deadheading and Pruning
To keep the blooms coming all summer long, it helps to "deadhead" the plants. This simply means removing the spent flowers before they turn into seed pods. When a flower stalk has finished blooming, you can cut it back to where the next flower bud is forming. If the entire stalk is finished, cut it down to the foliage level. This encourages the plant to put its energy into more flowers rather than producing seeds.
Managing Pests and Challenges
Cannas are generally very hardy and suffer from few problems. The most common issue gardeners face is the canna leaf roller. These are small caterpillars that roll themselves up inside the leaves, causing the foliage to look tattered or develop holes. If you notice rolled leaves, you can gently unroll them and remove the caterpillar, or consult your local garden center for a safe treatment.
Slugs and snails may also take an interest in the young, tender shoots in the spring. If you see jagged holes in the new growth, a bit of organic slug bait or a copper barrier can help protect your plants. Usually, once the plants get larger, they outpace any minor damage from these common garden visitors.
It is also important to remember that leaf appearance can vary based on weather. If the edges of the leaves turn brown or "crispy," it is often a sign of underwatering or scorch from very hot, dry winds. Increasing your watering frequency and applying mulch usually resolves this.
Overwintering Canna Lilies
In USDA Zones 8 through 11, canna lilies are typically perennial and can stay in the ground all year. You can simply cut the foliage back to the ground after it turns yellow in the fall and add a layer of mulch for protection. For more planting and storage tips, read All About Cannas.
However, if you live in Zone 7 or colder, the rhizomes will not survive a freezing winter in the ground. Many gardeners choose to "lift" their cannas and store them for the winter. This is a simple process that allows you to enjoy the same plants year after year.
After the first frost has blackened the foliage, cut the stems down to about 4 inches. Carefully dig up the clump of rhizomes, being careful not to nick them with your shovel. Shake off the excess soil and let them air dry in a cool, shaded area for a few days. Once dry, store them in a box filled with slightly damp peat moss or vermiculite in a cool, dark place like a basement or crawl space where temperatures stay between 40°F and 50°F.
What to Do Next: Summer Maintenance Tips
- Water deeply 2–3 times a week, or more often for containers.
- Apply a balanced fertilizer every 4–6 weeks.
- Remove spent flower stalks to encourage more blooms.
- Monitor leaves for any signs of caterpillars or slugs.
Designing with Canna Lilies
How you plant canna lily bulbs also depends on the visual effect you want to achieve. Because of their height, they are most often used at the back of a flower border. This creates a tall, green or colorful wall that serves as a backdrop for shorter perennials and annuals.
Try grouping cannas in "drifts" of three or five plants rather than planting them in a single straight line. This looks more natural and creates a bigger splash of color.
You can also mix different varieties to play with foliage color, and our Canna Assorted Mix is an easy way to do it. For example, planting a dark-leaved variety like Australia next to a bright green variety like City of Portland creates a stunning high-contrast look even when the plants are not in bloom.
Cannas also look beautiful when paired with other tropical-looking plants. Consider planting them alongside hibiscus, elephant ears, or caladiums. If you want a more traditional look, they pair wonderfully with sun-loving annuals like zinnias, lantana, and cleome.
Why Quality Matters
When you start with high-quality rhizomes, half the work is already done. At Longfield Gardens, we work closely with experienced growers to ensure you receive healthy, firm rhizomes that are true to variety. We store our bulbs in climate-controlled conditions until it is the perfect time to ship them to your specific hardiness zone.
We stand behind everything we ship with our 100% quality guarantee. We want you to be successful and enjoy your garden to the fullest. If your items arrive damaged or if there is a quality issue, we encourage you to contact us right away. Our goal is to help you grow a garden that brings you joy every single season.
"The beauty of the canna lily is that it rewards even a small amount of effort with a massive display of color and texture. It truly is the ultimate 'easy-win' for the summer garden."
Conclusion
Learning how do you plant canna lily bulbs is one of the most satisfying skills a gardener can acquire. These plants offer a unique combination of dramatic size, vibrant color, and ease of care. By providing them with plenty of sunshine, rich soil, and consistent moisture, you can create a stunning landscape that feels like a private retreat.
Whether you are planting them in a large backyard border or a single decorative pot on your patio, cannas are sure to turn heads. Their rapid growth and tropical flair make them a standout choice for anyone looking to make a big impact in a short amount of time.
- Wait for warm soil (60°F) before planting outdoors.
- Plant rhizomes 4 inches deep and horizontally with eyes up.
- Keep the soil moist and feed the plants regularly.
- Deadhead spent flowers to keep the blooms coming.
Ready to start your own tropical oasis? Visit us at Longfield Gardens to explore our wide selection of canna lily varieties and find the perfect match for your garden style. We are here to help you grow a more beautiful world, one bulb at a time.
FAQ
Which way should the "eyes" face when planting?
When planting canna lily rhizomes, you should place them horizontally in the hole with the "eyes" or any small sprouts pointing upward. This gives the new stems the shortest path to reach the soil surface. However, do not worry if you cannot tell which side is which; the plant is very talented at finding the light and will grow correctly even if planted upside down.
Can I grow canna lilies in the shade?
While cannas will grow in partial shade, they really thrive in full sun. To get the best flower production and the most vibrant foliage colors, aim for at least six to eight hours of direct sunlight. If they are in too much shade, they may become tall and floppy, and they might not produce any flowers at all.
How long does it take for cannas to bloom after planting?
Cannas are relatively fast growers, but they do need warm weather to get moving. Generally, you can expect to see the first flowers about 10 to 12 weeks after planting the rhizomes in warm soil. If you start your rhizomes indoors several weeks early, you can significantly shorten that wait time once they move to the garden.
Do canna lilies need a lot of fertilizer?
Yes, cannas are considered "heavy feeders" because they produce so much foliage and many flowers in a very short window of time. For the best results, mix compost into the soil at planting time and use a balanced, slow-release fertilizer throughout the summer. This ensures the plant has the energy it needs to stay lush and productive until the first frost.