Dr. Grinspoon requires a longer flowering time, but when mature the colas resemble compact green and reddish brown beads. These loosely hang on thin stems, the buds give a lemon and sumac scent and produce a smooth smoke with tangy tropical fruit aromas. Dr. Grinspoon is an old school sativa of the highest order, with a strong, long lasting, energetic and cerebral high. Dr. Grinspoon is named after an amazing Cannabis advocate, researcher and author, Dr Lester Grinspoon. This is a pure heirloom Sativa which grows tall and thin.