Five plants do nearly all the work of Christmas plant decor: poinsettia, Christmas cactus, amaryllis, Norfolk Island pine, and rosemary topiary. Each has a real best use case \u2014 and a real catch (pet toxicity, cold sensitivity, or short bloom window) that the holiday-display industry rarely tells you about. This guide covers what each one actually is, how long it lasts, what to do with it after Christmas, and which ones are safe around pets.
At a glance
| Plant | Bloom duration | Pet-safe? | Keeps past January? |
|---|---|---|---|
| Poinsettia | 4\u20136 weeks | Mildly toxic | Rarely |
| Christmas cactus | 4\u20136 weeks | Non-toxic | Yes \u2014 decades |
| Amaryllis | 2\u20133 weeks | Highly toxic | Yes (re-blooms annually) |
| Norfolk Island pine | (foliage, not flowering) | Non-toxic | Yes \u2014 years |
| Rosemary topiary | (foliage, not flowering) | Non-toxic (edible) | Rarely indoors |
1. Poinsettia (Euphorbia pulcherrima)
The classic Christmas plant. The big colorful "petals" most people call flowers are actually modified leaves called bracts \u2014 the real flowers are the tiny yellow buds in the center. Poinsettia bracts color up in response to short days (12+ hours of darkness for 8\u201310 weeks in the fall), which is why they appear only in late autumn.
Pet safety: Long-standing myth that poinsettias are deadly to pets. The truth: poinsettia sap causes mild oral irritation, drooling, and occasionally vomiting if eaten, per the ASPCA Animal Poison Control. Symptoms are typically self-limiting and rarely require vet treatment. Still keep out of reach \u2014 mild is not "no risk."
How to keep it alive: Bright indirect light, water when top inch is dry, no cold drafts (below 55\u00b0F kills them fast). Most poinsettias drop bracts within 4\u20136 weeks. Getting one to re-bloom next year is technically possible but requires 14 hours of total darkness every night from October through Thanksgiving \u2014 most owners discard the plant in January.
Buying tip: Poinsettias sold outdoors in cold parking lots have already been damaged. Look for one stored indoors with bracts that look firm, not wilted. Cover with a paper bag when carrying to the car if it's below 50\u00b0F outside.
2. Christmas Cactus (Schlumbergera bridgesii)
The most underrated holiday plant. It blooms with showy pink, red, or white flowers for 4\u20136 weeks each winter, lives for decades with minimal care, and \u2014 the killer feature \u2014 is completely non-toxic to cats and dogs per the ASPCA.
Pet safety: Non-toxic. Pet households can put it anywhere.
How to keep it alive: Bright indirect light, water when top half of soil is dry (less often than typical houseplants), 50\u201370% humidity. To re-bloom next year, give it 12\u201314 hours of darkness nightly starting in early October, plus cooler nights (50\u201360\u00b0F). Most owners I know keep theirs in a guest room with a closed door from October through Thanksgiving.
The botanical correction: What's sold as "Christmas cactus" in most stores is actually Schlumbergera truncata (Thanksgiving cactus). True S. bridgesii has rounded leaf segments; S. truncata has pointed claw-like segments. Same care, slightly different bloom timing.
3. Amaryllis (Hippeastrum cultivars)
A massive trumpet-shaped flower that emerges from a softball-sized bulb. Often sold as a bulb kit in November to bloom for Christmas \u2014 plant the bulb 6\u20138 weeks before you want the bloom.
Pet safety: HIGHLY TOXIC to cats and dogs, per the ASPCA. Contains lycorine and other alkaloids that cause vomiting, hypotension, and tremors. The bulb is more concentrated than the leaves and stem. Keep entirely out of pet reach \u2014 high shelf, closed room, or skip this plant if you have pets that explore.
How to bloom it: Plant the bulb in well-draining potting mix with the top third exposed. Water sparingly until growth appears, then water regularly. Bright indirect light. Bloom appears 6\u20138 weeks from planting. Each scape produces 2\u20136 flowers that last 2\u20133 weeks total.
After blooming: Cut the flower stalk, keep leaves growing, fertilize monthly. In late summer, stop watering and let leaves die back. Store the bulb in a cool dark place for 8\u201310 weeks of dormancy, then re-pot. Amaryllis can bloom annually for 25+ years.
4. Norfolk Island Pine (Araucaria heterophylla)
Often sold as a "living Christmas tree." It's a tropical conifer from Norfolk Island in the South Pacific \u2014 NOT a true pine, NOT cold-hardy, and NOT a tree that will live outside in most of the US.
Pet safety: Non-toxic per the ASPCA. Safe to decorate with garlands without worrying about pets nibbling.
How to keep it alive: Bright indirect light (more than most houseplants), 50%+ humidity, water when top inch is dry. The single biggest killer is dry winter air \u2014 lower fronds drop dramatically below 30% humidity. A humidifier nearby is essentially required to keep one healthy through winter.
Long-term: With good care, Norfolk Island pines live for many years indoors and can reach 6\u20138 ft tall. They cannot survive outside in zones colder than 10 (essentially Florida, Hawaii, and Southern California only).
5. Rosemary Topiary (Salvia rosmarinus)
The cone-shaped rosemary "Christmas tree" sold in grocery stores in December. It's a culinary rosemary plant pruned into a conical shape \u2014 same species you'd grow for cooking.
Pet safety: Non-toxic and edible. Per the ASPCA, rosemary is non-toxic to cats and dogs.
How to keep it alive (the hard part): Rosemary is a Mediterranean shrub that hates indoor conditions. It needs full direct sun (south-facing window minimum), dry-leaning soil between waterings, and low humidity. Most indoor rosemary topiaries die within 4\u20136 weeks because typical indoor conditions are too dim, too humid, and the soil stays too wet. Move outside as soon as overnight temperatures stay above 40\u00b0F.
Buying tip: Use it for cooking immediately. The cone-trained shape doesn't last anyway, and the leaves are perfectly culinary-grade rosemary.
My picks if you have to choose one
- For a pet household with no time: Christmas cactus (non-toxic, lives for decades, blooms for 6 weeks)
- For dramatic bloom: Amaryllis bulb kit (massive flowers, very Instagram-worthy)
- For traditional look: Poinsettia (but accept it as a 6-week display, not a long-term plant)
- For "living Christmas tree" with year-round presence: Norfolk Island pine
- For utility: Rosemary topiary (just cook with it)
After Christmas
What to actually do with each plant in January:
- Poinsettia: Compost or attempt the 14-hour-darkness re-blooming protocol (most owners discard).
- Christmas cactus: Continue normal care. It will live for decades and bloom every winter.
- Amaryllis: Cut the spent flower stalk, keep leaves growing, follow the dormancy protocol above.
- Norfolk Island pine: Treat as a permanent houseplant. It does not need to be discarded.
- Rosemary topiary: Use up in cooking before it dies indoors, or move outside in spring.
A note on Christmas trees
If you want to know whether you can plant your cut Christmas tree in the yard after the holidays, see our separate guide: Can you replant a Christmas tree?.