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.
June-bearing varieties, however, can be planted in late summer or fall for a harvest the following spring. Planting June-bearing strawberries at this time allows them to become productive more quickly. If you plant June bearers in spring, they will not start to grow fruit until the next year.