Canna lilies transplant successfully when you divide their rhizomes at the right moment in their growth cycle. Knowing how to transplant canna lilies is a simple gardening skill that keeps your flower beds vibrant and prevents overcrowding. These tropical-looking plants are actually quite tough, and they respond well to a little bit of careful handling.
You do not need to be a master gardener to move these beauties. The process involves digging up the roots, splitting them, and replanting them in fresh soil. It is a rewarding task that gives you more plants for free, which is always a win in the garden.
In this guide, we will walk you through every step. We will cover the best time to dig, how to handle the rhizomes, and how to replant them so they thrive. Let us get your cannas settled into their new home.
Why You Should Move Your Cannas
There are a few good reasons to dig up your canna lilies. The most common reason is that they have simply outgrown their current spot. When clumps get too dense, the flowers become smaller and less impressive.
Another reason is to fix a design flaw in your garden. Maybe you want to move them to a sunnier location or a place where they can show off more. Sometimes, you just want to share a few rhizomes with a friend or neighbor.
Regardless of your reason, the process is the same. It is a straightforward job that takes about thirty minutes to an hour, depending on the size of your clump.
When Is The Best Time To Transplant?
Timing is critical for success. The ideal time to move cannas is in the spring after the last frost has passed. At this point, the soil is warming up, and the plants are just starting to push out new growth.
You can also transplant them in the fall. This is usually done when you are digging them up to store for the winter in colder climates. If you are moving them in the fall, you will need to replant them immediately in a pot or a sheltered spot, or store the rhizomes properly.
Here is a quick breakdown of the seasons:
- Spring: The best time for dividing and moving. The plants are waking up.
- Summer: Possible but risky. The plants are in full leaf and may suffer from shock.
- Fall: Good for digging up and storing. Only move them if you are putting them in a greenhouse.
If you live in a warm climate (USDA zones 8-11), you can treat cannas as perennials and leave them in the ground. You can still divide them in the spring to keep them healthy.
Tools You Will Need
Before you start digging, gather your tools. Having everything ready makes the job smoother. You do not need fancy equipment, just a few standard garden items.
- A garden fork or spade for digging
- A sharp knife or pruning shears for cutting the rhizomes
- A bucket of water or a hose
- Compost or well-rotted manure for soil amendment
- Gloves to protect your hands
Make sure your knife is sharp. A dull blade will crush the rhizome tissue, which can lead to rot. A clean, sharp cut helps the plant heal faster and prevents disease.
How To Transplant Canna Lilies
Now we get to the main event. Follow these steps carefully, and your cannas will hardly notice they have been moved. The key is to keep the roots moist and handle them gently.
Step 1: Prepare The New Location
First, choose the perfect spot. Cannas love full sun, which means at least six hours of direct sunlight per day. They also prefer rich, moist soil. They are heavy feeders, so they need good nutrition to produce those big, bold blooms.
Dig a hole that is about 4 to 6 inches deep. If you are planting multiple rhizomes, space them about 18 to 24 inches apart. This gives them room to grow without crowding each other out.
Mix some compost into the soil you removed from the hole. This adds nutrients and improves drainage. Cannas like moisture, but they do not like soggy feet.
Step 2: Dig Up The Existing Clump
Water the plant thoroughly the day before you plan to dig. This softens the soil and makes the roots easier to lift. It also reduces the stress on the plant.
Use your garden fork to loosen the soil around the base of the plant. Start about 6 to 8 inches away from the stems. Push the fork in and gently pry upwards. Work your way around the entire clump until you can lift it out of the ground.
Do not yank on the stems. If you pull too hard, you might snap the leaves off. Instead, use the fork to lift the entire root ball out of the soil.
Step 3: Clean And Inspect The Rhizomes
Once the clump is out, shake off the excess soil. You can also rinse the roots with a hose to see them more clearly. This makes it easier to see the “eyes” or growing points.
Look for any soft, mushy, or rotten spots. These are signs of disease or pests. Cut away any damaged parts with your sharp knife. Healthy rhizomes are firm and plump.
If you see any old, woody stems from last year, you can cut those off too. You only want to keep the healthy, vigorous parts of the root system.
Step 4: Divide The Clump
Now, look for natural divisions in the rhizome. Each piece should have at least one “eye” or growing point. This is a small, pinkish bud that will grow into a new stem.
Use your knife to cut the rhizome into sections. Each section should be about 3 to 5 inches long. Make sure each piece has at least one eye. If you are unsure, it is better to leave the pieces larger rather than smaller.
Here is what to look for:
- Firm texture
- Visible growth buds
- No signs of rot
If you are not planting them immediately, you can store the divisions in a cool, dry place for a few days. Just keep them out of direct sunlight.
Step 5: Replant The Divisions
Place the rhizome in the hole with the eye facing upwards. The eye should be about 2 to 3 inches below the soil surface. Cover it with soil and press down gently to remove any air pockets.
Water the new planting thoroughly. This helps the soil settle around the roots and gives the plant a good start. Keep the soil consistently moist for the first few weeks while the plant establishes itself.
If you are planting in a pot, make sure the pot has drainage holes. Use a good quality potting mix and follow the same depth guidelines.
Post-Transplant Care
After you have moved your cannas, they need a little extra attention. They will likely look a bit droopy for a few days. This is normal. They are focusing their energy on growing new roots.
Water them deeply two to three times a week, especially if it is dry. Do not let the soil dry out completely. A layer of mulch around the base of the plant can help retain moisture and keep the roots cool.
Wait about two weeks before fertilizing. This gives the roots time to settle in. After that, you can use a balanced fertilizer every few weeks to encourage blooming.
Common Mistakes To Avoid
There are a few common pitfalls that can cause your transplant to fail. Avoiding these will save you a lot of frustration.
- Planting too deep: This can cause the rhizome to rot.
- Planting too shallow: The rhizome may dry out or freeze.
- Dividing too early: Wait until the soil has warmed up.
- Letting the roots dry out: Keep them moist during the process.
If you notice the leaves turning yellow after transplanting, do not panic. It is often just the plant shedding old growth. As long as the rhizome is firm, new growth will appear soon.
Transplanting Potted Cannas
If your cannas are in pots, the process is slightly different. You will still need to divide them, but you have more control over the environment. This is a great option if you live in a colder climate.
To repot, simply tip the pot over and slide the root ball out. Follow the same division steps as above. Then, replant in fresh potting mix in a new pot that is slightly larger than the root ball.
Potted cannas need more frequent watering than those in the ground. They also need regular feeding because nutrients wash out of the pot. Keep them in a sunny spot, and they will reward you with beautiful flowers.
Dealing With Pests And Diseases
Healthy cannas are generally pest-free. However, they can occasionally be bothered by spider mites or caterpillars. If you see holes in the leaves, check for caterpillars and remove them by hand.
Root rot is the most common issue. This is almost always caused by poor drainage. If your soil is heavy clay, amend it with compost or sand before planting. This will help the water drain away from the rhizome.
If you notice any signs of disease during the division process, dip your knife in a solution of bleach and water. This prevents the spread of pathogens to healthy rhizomes.
Frequently Asked Questions
Here are some common questions gardeners have about moving canna lilies. These answers should cover any remaining doubts you have.
Can I Transplant Canna Lilies While They Are Blooming?
Yes, you can, but it is not recommended. The plant will likely drop its flowers and leaves due to shock. It is much better to wait until the plant is dormant or just starting to grow in the spring.
How Deep Do I Need To Plant The Rhizomes?
You should plant them about 4 to 6 inches deep. The growing eye should be 2 to 3 inches below the soil surface. This protects them from frost and keeps them stable.
Why Are My Canna Leaves Turning Yellow After Transplanting?
This is usually a sign of transplant shock. The plant is redirecting energy to root growth. It can also be a sign of overwatering. Check the soil moisture and adjust your watering schedule accordingly.
Can I Store The Rhizomes If I Dig Them Up In The Fall?
Yes. After digging them up, let them dry for a few days. Then, store them in a box filled with peat moss or vermiculite. Keep them in a cool, dark place around 45-50°F (7-10°C). Check them periodically for rot.
How Often Should I Divide My Canna Lilies?
You should divide them every 3 to 4 years. This prevents overcrowding and keeps the plants vigorous. If you notice smaller blooms or a crowded clump, it is time to divide.
Final Thoughts On Moving Cannas
Transplanting canna lilies is a simple task that yields great results. By following these steps, you will have healthy, vibrant plants that bloom all summer long. The key is to be gentle with the roots and provide the right conditions.
Remember to water them well after planting and give them plenty of sun. With a little care, your cannas will settle in quickly and put on a spectacular show. Whether you are dividing them for more plants or just rearranging your garden, you now have the knowledge to do it right.
So grab your shovel and get digging. Your garden will thank you for it. And if you have any more questions, just refer back to this guide. Happy gardening.