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.
Pruning raspberry bushes improves their overall health and vigor. In addition, when you prune raspberry plants, it helps increase fruit production. Since raspberries grow only foliage the first season (year) and flowers and fruit the next (second year), removing dead canes can make it easier to obtain a maximum yield and berry size.