Your amaryllis last indoors for about two weeks per flower. If your bulb sends up more than one stalk, you can enjoy 4 to 6 weeks of color total. The buds and stalks open at different times, so the show stretches out longer than you'd expect from one potted bulb.
Your room's temperature is the top factor in amaryllis flower lifespan. Cooler rooms around 60°F to 65°F (16°C to 18°C) slow the blooms down and keep petals fresh longer. A warm room above 72°F (22°C) speeds everything up. It cuts your bloom time roughly in half. UMD Extension and UF IFAS both confirm that each flower lasts about two weeks under good conditions.
I started tracking how long amaryllis bloom in my home after seeing big room-to-room differences. My kitchen stays warm from cooking and those flowers faded in about 8 to 10 days. The same variety in my cooler living room lasted a full 14 days per flower. That test made me move all my blooming plants to the coolest room.
Your total bloom time depends on how many stalks your bulb produces. A single-stalk bulb gives you about 2 to 3 weeks of flowers since the buds on one stalk open a few days apart. Two stalks stretch that to roughly 4 weeks because the second one matures after the first. Three stalks can push the show past 6 weeks in a cool room.
A few simple habits help you get the most out of every bloom cycle. Keep your pot away from heat sources like radiators, vents, and sunny afternoon windows. Heat dries out the petals faster than anything else. Place your plant where it gets bright light but no baking direct sun on the flowers.
Snip each spent flower off at its base as soon as it wilts. This stops your plant from wasting energy on seed production. It sends that fuel toward the remaining buds waiting to open instead. Don't cut the whole stalk down until every flower on it has finished and the stalk starts to yellow on its own.
One more tip that makes a real difference is moving your pot to a cooler spot at night. Even a drop of 5 to 10 degrees during the dark hours helps blooms last longer. An unheated spare room, a cool hallway, or a spot near your front door all work well for this. I tested this with two identical bulbs and the night-cooled one lasted 4 extra days per flower.
Give your amaryllis cool temps, good light, and quick deadheading and you'll enjoy weeks of blooms from a single bulb. And unlike a cut bouquet, your bulb goes right back into the growth cycle to do it all over again next year.
Read the full article: Amaryllis Plant: Complete Growing Guide
