Yes, you can grow chamomile indoors in winter, but light is the one factor that decides whether it works. Set a pot on a dim windowsill and the plant tells on itself fast. The stems stretch pale and floppy, leaning hard toward the weak glass as if begging for more sun. A second plant under a bright south window or a grow light stays low, green, and compact next to it. Same seed, same pot, two very different results, all because of how much light each one gets.
That gap comes down to day length. Chamomile is a full-sun plant that wants 6 or more hours of strong light a day. Winter gives it far less. The sun sits low, the days run short, and a north or east window just cannot keep up. So the plant goes leggy, builds thin weak stems, and skips most of its flowers. The leaves stay there, but the daisy-like blooms you actually want for tea barely show up.
This is where a chamomile grow light changes the math. A simple LED bar set a few inches above the pot, run for 12 to 14 hours a day, makes up for the short winter sun. Under steady light the plant stays bushy and pushes out real buds. Put it on a timer so it turns on and off the same hours each day. Chamomile likes a steady rhythm more than an odd burst of bright light. A cheap plug timer does the job for a few dollars and takes the daily reminder off your plate.
Temperature and air matter almost as much as light when growing chamomile indoors. Keep the pot in a cool to average room, somewhere around 60 to 70°F (16 to 21°C), and pull it away from hot radiators or heat vents. Dry blasting heat stresses the plant and dries the soil in patches. Indoor winter air also sits still, which invites mold and damping-off on the soil surface.
Let the top inch of soil dry out before you water again, then water at the base, not over the leaves. Still indoor air dries slowly, so soggy soil is the fastest way to lose a winter plant to fungus.
Pick the right pot and soil to make the rest easier. A 6-inch pot with drainage holes and a light, free-draining mix keeps roots happy without holding too much water. Set the pot on a saucer and empty it after each watering so the roots never sit in a puddle. A small fan on low across the room, even for an hour a day, keeps the air moving and cuts the risk of mold.
Set your goal to match the season and you will not feel let down. Winter indoor chamomile works best as a small fresh-snip herb, not a heavy tea crop. You can clip a few flowers and soft tips for a cup or a garnish, but you will not harvest jars of dried blooms the way a summer garden bed gives you. That is the honest tradeoff of the short, dim months.
Keep one thing clear so you set up the right way. This is different from a simple potted chamomile sitting outdoors in mild weather, where the open sky does the work for you. Indoors in winter, the limit is light, not pot size. So fix the light first and the rest falls into place. Give the plant a bright south window or a grow light. Keep it in a cool steady room and water with care. Do that and your chamomile indoors in winter stays healthy enough to snip from. Then spring brings the long days back and the plant takes off on its own.
Read the full article: Chamomile Plant Growing and Care Guide