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Posted on April 23, 2022 (Updated on July 30, 2025)

How do you overwinter calla lilies in a pot?

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Giving Your Calla Lilies a Cozy Winter: A Simple Guide

Calla lilies! Aren’t they just stunning? Those elegant, trumpet-shaped flowers can really add a touch of class to any garden or even brighten up a room indoors. Now, while many people treat them like annuals – planting them fresh each year – here’s a little secret: you can actually keep them going year after year with a little TLC. Yep, you can overwinter them in their pots! Think of it as tucking them in for a long winter’s nap. This guide will walk you through the process, ensuring your calla lilies not only survive the winter but come back even stronger and ready to bloom like crazy next season.

Understanding the Calla Lily’s Winter Snooze

Just like bears and some of us during tax season, calla lilies need their downtime. They naturally go dormant in the fall as the weather cools off. This dormancy period is super important; it’s like hitting the reset button for their health and future flower power. As they get ready for their nap, you’ll notice their growth slowing down, and the leaves will start to turn yellow and eventually wither. Don’t panic; it’s all part of the plan!

Getting Your Calla Lilies Ready for Their Winter Break

Okay, timing is everything. When you start prepping your calla lilies for winter depends on where you live. If you’re in a place that gets seriously cold – colder than USDA zone 8, to be exact – your calla lilies won’t make it through the winter outside. Trust me, I learned that the hard way one year! So, you’ll need to bring them indoors and give them a little special attention. Here’s the lowdown:

  • Watch the Calendar: Keep an eye on the weather forecast. You need to act before the first hard frost hits, usually sometime in the fall or early winter.

  • Ease Up on the Water: Starting in late summer or early fall, gradually cut back on the watering. And definitely stop with the fertilizer. This is like telling the plant, “Hey, sleepy time is coming!”

  • Give ‘Em a Haircut: Once the leaves have turned yellow and pretty much died back, go ahead and trim them down to about an inch or two above the soil.

  • Pick Your Winter Strategy: Now, you’ve got a couple of choices for how to overwinter your potted calla lilies:

    • The Deep Sleep (Dormant Storage): This is where you basically trick the plant into thinking it’s in hibernation. You’ll dry it out and store it away.
    • The Indoor Vacation (Indoor Growing): This is where you keep the calla lily as a houseplant throughout the winter, just adjusting your care a bit.
  • Option 1: The Deep Sleep (Dormant Storage)

    This is the way to go if you want to give your calla lilies a complete rest. Plus, it’s great if you’re short on indoor space.

  • No More Drinks!: Stop watering completely. Let that soil dry out completely. Bone dry!
  • Find a Cool, Dark Hideaway: Stash the whole pot in a cool, dark, and dry spot. Think basement, unheated garage, or even a shed. You’re aiming for temperatures between 50-60°F (10-15°C).
  • Keep an Eye Out for Trouble: Every now and then, peek at the rhizomes (those bulb-like things). You’re looking for any signs of rot or mold. If you spot any soft or mushy areas, carefully cut them away with a clean knife.
  • Don’t Let Them Get Too Thirsty: While you want to keep things dry to prevent rot, you don’t want the rhizomes to shrivel up like raisins. If they look a little parched, lightly mist the soil with water. Just a tiny bit!
  • Spring Awakening: Around March, when things start to warm up, bring the pot back into the light. Start watering it a little bit at first until you see new growth popping up. Once you see those little shoots, give it more water and move it to a bright spot.
  • Option 2: The Indoor Vacation (Indoor Growing)

    Want to keep some greenery around during the winter? Then this is for you.

  • Water Wisely: Cut back on how often you water. Let the top inch or so of soil dry out before you water again.
  • Find a Sunny Spot (But Not Too Sunny): Place the pot where it’ll get bright, indirect light. Direct sunlight can actually burn the leaves.
  • Keep it Comfy: Aim for room temperatures between 60-75°F (16-24°C).
  • A Little Snack, Now and Then: Fertilize once a month with a balanced liquid fertilizer.
  • Pest Patrol: Keep an eye out for unwanted guests like aphids or spider mites. If you see any, zap them with some insecticidal soap or neem oil.
  • Even Vacationers Need a Rest: Even if you’re growing it indoors, your calla lily will appreciate a little break. In late winter, ease up on the watering again and let it dry out a bit before you go back to your regular routine in the spring.
  • Waking Up in the Spring

    No matter which method you choose, spring is when the magic happens!

  • New Home, Maybe?: If your calla lily has gotten a bit cramped in its pot, now’s the time to give it a new, slightly bigger home with some fresh potting mix.
  • Water, Water Everywhere: As soon as you see new growth, start watering more regularly.
  • Fuel Up!: Start fertilizing every couple of weeks with a balanced liquid fertilizer.
  • Soaking Up the Sun (But Not Too Much): Once the danger of frost is gone, you can move your potted calla lily outside to a spot with partial shade.
  • Troubleshooting: What to Do When Things Go Wrong

    • Rotten Roots: Overwatering is usually the culprit here. Make sure your pot has good drainage and let the soil dry out a bit between waterings.
    • No Flowers?: Not enough light, skipping the dormancy period, or too much nitrogen in the soil can all mess with blooming. Give it bright light, make sure it gets its winter rest, and use a fertilizer that’s low in nitrogen.
    • Yellow Leaves: This could be too much water, not enough water, or a lack of nutrients. Adjust your watering and fertilize as needed.

    Final Thoughts

    Overwintering calla lilies in pots isn’t rocket science. With a little understanding and care, you can keep these beauties thriving year after year. Whether you decide to give them a deep sleep in a cool, dark place or let them vacation indoors, your calla lilies will reward you with their stunning blooms. Trust me, it’s worth the effort!

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