Flowers and plants in the park are usually not suitable for directly decorating dishes. Although flowers can provide beautiful landscape and ornamental value in parks, not all flowers are suitable for decorating dishes. Some flowers and plants may contain toxins or harmful substances, and eating them may pose risks to human health. Some flowers and plants are widely used for food decoration, such as some flowers that are considered safe, such as edible chrysanthemums, edible rose petals and edible perilla flowers. These flowers are usually used for food placement, color matching or providing subtle fragrance and taste.