How to Grow Calla Lilies and Keep Them Healthy

Calla lilies can look demanding at first because their needs shift as they move from active growth to flowering and dormancy.

Like many resilient indoor plants, I find them much easier to manage once you understand those seasonal changes, rather than following the same routine all year.

Good calla lily care comes down to timing. Adjusting light, moisture, feeding, and post-bloom care as the plant changes can support healthier growth over time.

Calla Lilies: A Quick Look

Calla lilies are flowering plants from the Zantedeschia genus, native to southern Africa. They are known for their smooth, funnel-shaped blooms and upright green leaves.

Their sculptural flowers and upright foliage make them a natural pairing with tropical-inspired interior and garden spaces where bold, architectural plants set the tone.

The part that looks like a flower is actually a spathe, a modified leaf that wraps around the central spadix. This structure gives calla lilies their distinct shape.

These plants grow from underground rhizomes rather than true bulbs. Depending on the variety, blooms may be white, pink, yellow, orange, purple, red, or deep burgundy.

How to Plant, Grow and Maintain Calla Lilies

Successful calla lily care becomes easier when you follow the plant through each stage of growth.I’ve found that treating each stage separately, rather than applying one routine year-round, is what actually prevents most of the common mistakes.

Step 1: Choose the Right Time and Location

Calla lilies need warmth and enough light to get off to a strong start. Picking the right planting window and growing spot helps prevent early stress.

• Plant outdoors after the last frost has passed.
• Wait until the soil warms to around 65°F.
• Choose full sun to partial shade.
• Give afternoon shade in very hot climates.
• Avoid low spots where water collects.
• Leave enough room between plants for mature growth.

Tip: In colder areas, you can start rhizomes indoors a few weeks early and move them outside once conditions warm up.

Step 2: Prepare the Soil and Plant the Rhizomes

Good soil gives calla lily rhizomes the moisture they need without leaving them waterlogged. Once the bed is ready, planting is fairly simple.

• Use fertile, well-draining soil.
• Loosen compacted ground before planting.
• Add compost or organic matter if the soil needs improvement.
• Plant rhizomes about 3 to 4 inches deep.
• Position visible growing points upward.
• Space rhizomes about 12 inches apart and water after planting.

Tip: The groundwork is much easier to do when you prepare your flower beds ahead of the growing season rather than trying to correct it once plants are already in the ground.

Step 3: Water and Feed During Active Growth

Once shoots appear, calla lilies need steady moisture and nutrients to support leaves, stems, and flower development. The goal is consistency, not heavy watering or feeding.

• Check the top 1 to 2 inches of soil before watering.
• Water when the surface feels slightly dry.
• Moisten the root zone thoroughly.
• Avoid keeping the soil constantly soggy.
• Begin feeding once steady growth is visible.
• Use a balanced fertilizer according to label directions.

Step 4: Maintain the Plant While It Blooms

Once flowers appear, major changes are usually unnecessary. Focus on keeping the plant stable and noticing problems early.

• Keep light and watering conditions consistent.
• Check leaves and stems regularly.
• Watch for insects or signs of disease.
• Remove badly damaged foliage when needed.
• Avoid moving potted plants between very different light conditions.
• Continue normal care while flowers remain healthy.

Step 5: Remove Faded Flowers and Let Foliage Mature

After flowering, the leaves still play an important role in supporting the rhizomes. This is not the time to cut the whole plant back.

• Use clean pruning shears.
• Cut faded flower stalks near the base.
• Leave healthy green leaves attached.
• Remove only damaged or fully spent foliage.
• Keep healthy foliage in place after flowering.
• Let the leaves continue supporting the rhizomes.

What Causes Calla Lily Leaves to Turn Yellow?

Calla lily leaves turning yellow can result from watering problems, poor drainage, nutrient shortages, rhizome damage, or dormancy. Timing and overall plant condition usually help identify the most likely cause.

Overwatering limits oxygen around roots, while very dry soil can cause yellowing with wilting or crisp edges. Poor drainage can create similar stress around underground rhizomes over time.

Pale leaves during active growth may suggest low nutrients, especially in containers. Rapid yellowing with soft or collapsing growth can point to a problem below the soil and needs closer inspection.

Gradual yellowing near the end of the growing season is usually normal dormancy.

In my experience, the timing of the yellowing tells you more than the color itself – sudden yellowing mid-season is worth investigating, while slow yellowing in fall rarely is.

Why Calla Lilies Fail to Bloom

A calla lily can produce healthy leaves without flowers. When that happens, check the conditions that directly affect bloom development.

• Too little sun: Heavy shade can reduce flowering.
• Too much nitrogen: Excess nitrogen encourages leaves instead of blooms.
• Young rhizomes: Newly planted rhizomes may need more time to establish.
• Recent division: Divided plants often focus on roots and foliage first.
• Crowded growth: Dense clumps may produce fewer blooms.
• Poor dormancy: An incomplete rest period may affect the next bloom cycle.

Common Calla Lily Pests and Diseases

Calla lilies can develop pest or disease problems even when they are growing well. Regular checks make it easier to spot damage before it spreads.

Look over the leaves, stems, and base of the plant during the growing season, especially if growth suddenly changes.

Problem	Common Signs	What to Do
Aphids	Clusters of small insects on new growth	Rinse them off or use an appropriate treatment
Spider mites	Fine webbing and pale leaf speckles	Treat early and inspect nearby plants
Slugs and snails	Ragged holes or chewed leaf edges	Remove pests and use suitable controls
Leaf spot	Brown or dark patches on leaves	Remove heavily affected foliage
Rhizome rot	Soft rhizomes and collapsing stems	Remove damaged parts and improve drainage

When and How to Divide Calla Lilies?

Calla lily rhizomes multiply over time and can form dense clumps. Dividing them helps reduce crowding and gives you new sections to replant.

The best time to divide calla lilies is during dormancy, once active growth has stopped and the foliage has died. I only divide mine every few years, and I’ve noticed the plants bloom better the season right after division than the season it’s done.

Lift the clump carefully and brush away loose soil. Separate healthy rhizomes by hand, or use a clean cutting tool if needed. Keep sections with firm tissue and at least one growing point, and discard any rotting pieces.

You do not need to divide calla lilies every year. Do it when clumps become crowded, growth weakens, or flowering starts to decline.

Conclusion

Calla lilies respond best when their care changes with the season. What works during active growth may not be useful once the plant begins slowing down.

It helps to focus on timing rather than doing more. Watch the plant, check the soil, and make small changes only when needed.

With steady calla lily care, healthy rhizomes can keep producing strong foliage and flowers over time, making each new growing season easier to manage.

Frequently Asked Questions

Are Calla Lilies Toxic to Cats and Dogs?

Yes. Calla lilies contain insoluble calcium oxalate crystals that can irritate a pet’s mouth, cause drooling, and upset the stomach if chewed.

How Long Do Cut Calla Lilies Last in a Vase?

Freshly cut calla lilies can often last around 7 to 10 days in a vase when the water is kept clean and stems stay fresh.

Can Calla Lilies Be Used in Bouquets?

Yes. Their long stems and sculptural blooms make them popular for wedding bouquets, table arrangements, and other cut-flower displays.

What Does a Calla Lily Symbolize?

Calla lilies are often associated with purity, rebirth, beauty, and remembrance. The meaning can also vary depending on flower color and occasion.