The maturity period of tomato in days can vary depending on the variety of tomato and growing conditions. However, on average, the maturity period of tomato in days is around 90. This means that from the time tomato plants are sown, it takes about 90 days for the tomato fruits to reach maturity and be ready for harvesting. Some varieties of tomato may have a shorter or longer maturity period than this average, but 90 days is a good estimate for planning and predicting when tomatoes will be ready for harvest.