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.
ONE CROP option: For one large late summer crop, remove all canes, and the crop will come entirely from the new summerâs growth and produce berries in September through October. Summer and Ever-Bearing Raspberries: Prune the tip sections of both types, that is reduce the height of the cane to four or five feet.