For larger amounts, trim off full stems of basil from the top of the plant down. · find out the best time of year to harvest basil in your garden, and how to do it! · learn how to harvest basil the right way and at the right time to yield more leaves. · harvest from the top of the plant so more leaves are produced. · to ensure youre harvesting this plant correctly, we spoke to gardening experts who explained how to harvest basil leaves and basil stems, as well as how to store them. Also, learn how to prune basil correctly with this guide. · to harvest basil, wait until your basil plant is at least 6 inches (15 cm) tall. · learn how to harvest basil leaves, stems, seeds and flowers to maximize growth and flavor. If you pick from the bottom, it will get lanky and scraggly looking. Use your fingers or a small pair of scissors to remove the stems if theyre thick. Then, pinch off any number of leaves with your fingers to use as a garnish or in a recipe. Find out when, where and how to cut basil for cooking, drying, freezing or regrowing new plants.