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.
FEEDING AND WATERING RASPBERRIES. 1  As we mentioned on the previous page raspberries are water hungry plants, in particular when the berries are forming. The crucial period for summer-fruiting raspberries is mid spring to early summer, for autumn fruiting raspberries it is late spring to late summer.