As for essential oils that have long shelf lives usually, they are the thicker ones, such as Cedarwood, Sandalwood, Patchouli, Vetiver and a few others. Exception to this thick oil quality will be the essential oil of Rose Otto.
The season for them is generally a short one. Begins in early July and last for 2 to 3 weeks. Black raspberries tend to ripen before most red raspberries varieties expect for the early ripening summer ones.
Apples Blackberries Blueberries Cherries Figs Green Beans Peaches, Plums and Apricots Pears Raspberries Strawberries Vegetables. This month's notes: August 2016: Blueberries have a very brief season usually just 3 or 4 weeks (June in the South, July in the North and August in the far north).