Pinching off these flowers helps keep the plant growing. In fact, while pinching off the flower buds will help, it's even better to whack off half the plant and make pesto. Give it a week or two and you'll find an even more robust basil plant grown back.
Beside this, can Basil be used after flowering?
You can expect the blooms to taste similar to the leaves, but with a milder flavor. If, however, your intent when cultivating basil is for a big batch of pesto, you'll want to pinch back the herb to encourage leaf growth. Pinch off the flower buds as soon as they emerge.
Is it OK to eat basil after it flowers?
Basil produces less aromatic and flavorful oils after it begins to flower, which causes it to develop a bitter flavor. Although it's still possible to eat the leaves after flowering, you must remove the stems from each leaf and the foliage won't have its full flavor.
Do basil plants come back?
Sweet basil (Ocimum basilicum) is a true annual, usually dying after going to seed. In frost-free climates, however, it sometimes survives for two years. The plant tends to self-seed, producing new plants year after year and providing the fresh herb without you having to replant.