Once it’s established, helping basil to survive winter indoors isn’t too difficult. The plant will grow more slowly in winter, but with adequate heat and light should still produce new leaves every few weeks. Though basil is an annual, it can live for two or even three years if you look after it.

By maintaining the plants in a consistent environment with temperatures above 50℉ (10℃), ensuring they receive ample light, and keeping the soil moist but not waterlogged, basil can continue to flourish even as the winter bears down.

If you already have a favorite basil plant that produces lots of tasty leaves, there’s no reason why you can’t keep enjoying it indoors throughout the fall and winter. Placed in a cozy spot on a sunny windowsill, it will thrive throughout the cold months. Come summer, you can replant it outdoors.

Answer In short: Basil is a warm-season herb that prefers temperatures between 60-90°F (15-32°C). It is sensitive to cold temperatures and frost, making it challenging to survive winter conditions. Bringing and growing basil indoors in winter can help them survive.

Unfortunately, come the winter months and the cold, basil’s tolerance will be tested. It can sustain temperatures of around the 40 degrees Fahrenheit range. Once the thermometer drops down to around 32 degrees, your basil will get damaged.