For Christmas blooms, plant your amaryllis bulb between the end of October and mid-November. Iowa State says a potted bulb usually blooms about 6 to 8 weeks after planting and recommends early to mid-November for Christmas. Other extension guides quote as little as 4 weeks, so pot a second bulb a few days later as insurance.
Amaryllis is the most generous of the holiday bulbs: a dry, unpromising lump in October, a trumpet of red or white by the solstice. The only trick is counting backward. Here’s the calendar, why the numbers don’t quite agree, and how to pot the bulb so it has the best shot at your date.
When should you plant amaryllis to bloom by Christmas?
Count back from the day you want flowers. Iowa State’s Yard and Garden team puts it plainly: a bulb usually blooms about 6 to 8 weeks after planting, so plant in early to mid-November for Christmas. The University of Minnesota Extension says flowers usually develop in about 4 to 6 weeks from dormant bulbs.
| Bloom target (2026) | 8 weeks before | 6 weeks before | 4 weeks before |
|---|---|---|---|
| Hanukkah begins, Fri Dec 4 | Fri Oct 9 | Fri Oct 23 | Fri Nov 6 |
| Christmas, Fri Dec 25 | Fri Oct 30 | Fri Nov 13 | Fri Nov 27 |
| New Year’s Day, Fri Jan 1 | Fri Nov 6 | Fri Nov 20 | Fri Dec 4 |
Hanukkah 2026 begins at sundown on Friday, December 4 and ends at nightfall on Saturday, December 12, per Hebcal, so there’s a whole week of candlelight for a bloom to land in.
If you only pot one bulb for Christmas, aim for the first week of November, between the 8-week and 6-week columns. Better still, do what Iowa State suggests and pot a second bulb several days after the first.
Why do sources disagree on how long amaryllis takes?
Because bulbs, rooms and starting points differ:
- Iowa State says about 6 to 8 weeks from planting to bloom.
- University of Minnesota Extension says about 4 to 6 weeks from a dormant bulb.
- Warmth speeds things up. Iowa State recommends a warm spot, 70 to 75°F, right after potting, and a sunny window once growth appears. A bulb in a cool room will simply take longer.
Our studio takeaway: treat the ranges as a window, not a promise. Two bulbs staggered a week apart cover most of it, and an amaryllis that opens a few days after Christmas is still a very good New Year’s plant.
How do you pot an amaryllis bulb?
Iowa State’s potting instructions, with Minnesota’s notes where they differ:
- Pick a snug pot. Choose one about 1 to 2 inches wider than the bulb, with drainage holes. Clay, ceramic or plastic all work. Minnesota suggests about 1 inch wider than the widest part of the bulb and twice as tall as the bulb.
- Use well-drained potting mix. Put a little mix in the bottom and center the bulb.
- Leave the shoulders out. Fill around the bulb until the upper half stays above the soil (Minnesota says one-third to one-half), leaving about an inch between the soil and the rim.
- Water well once. Then let the mix dry somewhat before watering again.
- Keep it warm. Set the pot somewhere around 70 to 75°F until growth appears.
- Move it to the sun when it wakes. Once growth shows, give it a sunny window. Minnesota suggests at least 6 hours of full sun daily. Iowa State adds a water-soluble fertilizer every 2 to 4 weeks.
Potting bulbs is gloriously messy: dry mix, papery tunics, a little root trimming. We pot ours on the Botanical Potting Mat, where the snapped-up corners hold the loose soil so the kitchen counter stays clean. For more containment ideas, see how to repot without making a mess, or set up a proper corner with our indoor repotting station guide.
Where should an amaryllis grow while you wait?
Warm to start, bright once it’s growing. A spot near your sunniest window works well after the first shoot appears. If your plants have just come in from the porch, our checklist for bringing houseplants inside covers finding the brightest spots in the house.
FAQ
How long does amaryllis take to bloom?
Usually about 6 to 8 weeks after planting, per Iowa State, and about 4 to 6 weeks from a dormant bulb, per the University of Minnesota Extension. Warmth after potting speeds it up.
Is it too late to plant amaryllis for Christmas in late November?
It’s cutting it close. A bulb potted around Thanksgiving is about 4 weeks from Christmas, the fast end of the ranges. It will likely bloom in late December or early January instead, which still makes a lovely New Year’s plant.
Is amaryllis toxic to cats and dogs?
Yes. The ASPCA lists amaryllis as toxic to cats and dogs, with signs including vomiting, diarrhea, abdominal pain, hypersalivation and tremors. Keep bulbs and plants out of reach.
Should I water the bulb right after potting?
Yes, once and well. Iowa State says to water well at planting and then let the mix dry somewhat before watering again, until growth appears.