Yes, garden rose petals have a sweet and aromatic flavor and these petals are popularly used in many culinary dishes. You can use use the raw petals in garden salads to increase the flavors. The most popular way to use rose petals is to dry them and blend them into rose powder. It can be used in dessert items like halwa. You can also use dry petals for making granola or mixed herbs. So, these are safe to consume.