Does weed get old if left outside?

Yes, cannabis can degrade over time if left outside due to exposure to elements like sunlight, humidity, and air. These conditions can lead to the loss of potency, flavor, and aroma as cannabinoids and terpenes break down. Additionally, mold and pests can compromise the quality of the weed. To preserve its freshness, it's best to store cannabis in a cool, dark, and dry place.