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.
Black Satin is a mid-season blackberry. The blackberries on this type of bush are ripe from late July to early August. These berries are known for their large size and very black skin. They have good flavor, according to Oregon State University, and are a particularly hardy and vigorous variety of blackberry.