Gardening

Yes, you should stop fertilizing houseplants in the fall and winter because they are going dormant and don't need as many nutrients. In fact, fertilizing during these months can be a waste of time and money, and could even harm the plant.
Plants only use nutrients when they are actively growing, which is usually from April through September. During the fall and winter, plants are exposed to less light and lower temperatures, which causes them to slow their growth and enter a rest period. Without enough light, plants don't grow extra things like fruits and flowers, which also require more nutrients.
However, some plants may still need a half-dose of fertilizer during the fall and winter, so you should check the instructions on the plant tag or do some research about your specific plant. You can also adjust your care methods so that your plants can thrive in their dormant state.