Is this plant oregano (and therefore a perennial)? Was the plant transplanted directly into the ground during summer, or kept in a pot? The plant could be under stress for various reasons—could be transplant shock, from potting up from the outdoors and moving to an indoor location. If so, the plant might recover after a while. Also, some plants go dormant in winter, although gardeners usually can get oregano to produce throughout the colder months on a windowsill. Check for insects that may have come in on your plant, and monitor for disease. If you think the plant is not getting enough light, add grow lights (available from garden centers). Make sure you are not watering too much (allow soil to dry a bit between waterings), and that the pot has good drainage. Also check if it is too close to the glass or in a cold draft. Hope this helps!
Is this plant oregano (and therefore a perennial)? Was the plant transplanted directly into the ground during summer, or kept in a pot? The plant could be under stress for various reasons—could be transplant shock, from potting up from the outdoors and moving to an indoor location. If so, the plant might recover after a while. Also, some plants go dormant in winter, although gardeners usually can get oregano to produce throughout the colder months on a windowsill. Check for insects that may have come in on your plant, and monitor for disease. If you think the plant is not getting enough light, add grow lights (available from garden centers). Make sure you are not watering too much (allow soil to dry a bit between waterings), and that the pot has good drainage. Also check if it is too close to the glass or in a cold draft. Hope this helps!