Flat roofs usually come with a 10- to 20-year warranty but the roofs can last 25 years if properly installed and maintained. The traditional hot-tar-and-gravel roof is built from three or more plies of waterproof material alternated with hot tar and ballasted by a layer of smooth river stone.
Common herbs are mint, rosemary, and thyme. The American Spice Company sells herbs made from both fresh and dried leaves, while many of our spices curate from seeds, bark, fruit, flowers, and roots. Use herbs in cooking, aromatherapy, medicines, and cosmetics.
Many plants are used to flavor foods. Such plants include herbs (e.g. rosemary and mint), which come from the green leafy parts of plants, and spices (e.g. cumin and cinnamon), which come from other plant parts.