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The feminized cannabis strain Dr. Grinspoon by Barney's Farm is a tribute to the famous psychiatrist and cannabis activist, Dr. Grinspoon. It's a pure sativa strain "Heirloom", a landrace maintained by a group of growers. It is not an easy plant to grow, but the brave ones who dare with Dr. Grinspoon will find a plant with a very special taste, and an energetic cerebral effect.

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Dr. Grinspoon by Barney's Farm is a long flowering plant, its pure sativa genes can be difficult for inexperienced growers or those who expect the results of a plant with the characteristics of a sativa dominant hybrid.

Type and genetics

Dr. Grinspoon feminized cannabis seeds from Barney's Farm are 100% sativa, coming from a heirloom, a term used to describe a pure variety kept by a group of growers outside its natural habitat. Dr. Grinspoon is an old school sativa with a euphoric and energetic cerebral effect .


This cannabis strain has a typical sativa structure, lanky and tall. It adapts well to all types of growing methods, but it is necessary to know how to treat it, as it has a long flowering period of 14 weeks which is extended at the end of November outdoors. Indoors, bending it will help to adapt it to a tent and to get the light to reach all the buds. Outdoors, it can be grown in regions with mild autumns such as the Mediterranean and tropical regions.

Aroma and taste

The flavour produced by this strain is intense, similar to sumac, a classic Middle Eastern condiment also used in North African cuisine, and lemon with floral notes. If grown with organic fertilizers, it will also help to preserve the original flavor of Dr. Grisnspoon.


The effect is clear and mental, long lasting, full of energy and desire to do things. Dr. Grinspoon is an ideal strain for daytime smoking, and for creative and artistic activities. Its delicious effect of pure sativa is the reward for your patience and the efforts.


This strain is not at all a commercial strain, however it is common to find it in Coffee shops in Amsterdam at very high prices. The quality of the marijuana 100% sativa Old School, the taste and the clarity of the effect, compensate the low yield of this strain that blooms with very resinous green buds.

In indoor grows it produces up to 350 grams per square meter and outdoors up to 400 grams per plant.

Flowering indoors

Under lights, this variety completes flowering in 90/95 days, after the growth phase. To reach the highest production it is recommended to apply bending techniques such as Low Stress Training or with a growing net to set up a SCROG (screen of green).

Flowering outdoors

Under the sun or in greenhouses, it is harvested in the second half of November in the northern hemisphere and in the second half of May in the southern hemisphere. It is a large plant that needs a lot of substrate and textile pots to withstand the long flowering in pot with less stress.

Sativa/indica Percentage

Pure sativa 100%.


THC 26% CBD 0.4%.

La Huerta's opinion

Dr Grinspoon by Barney's Farm is a 100% sativa strain, of the old school, with which it is recommended to use fertilizers from the Top Crop Master pack.

Data sheet

Types of seeds
Feminized seeds
Indica sativa percentage
100% Sativa
Flowering time
Long Flowering (+65 days)
Potent effect
Citric flavour
Flowery flavour
Lemon flavour
Spiced flavour
Sweet/fruity flavour
Other characteristics
Humidity resistant

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