Dr Grinspoon

100% Sativa, 26% THC

This is an incredible potent classic Sativa strain. What it lacks in modern developments, it makes up for with supreme potency.

  • 26% THC!
  • Pure Heirloom Sativa
  • In Memory of a Legend
  • Classic Cannabis
As low as £11.84
In stock
Dr Grinspoon

This is an incredible potent classic Sativa strain. What it lacks in modern developments, it makes up for with supreme potency.

  • 26% THC!
  • Pure Heirloom Sativa
  • In Memory of a Legend
  • Classic Cannabis

This 100% Sativa seed is named in honour of the cannabis researcher, author and advocate, Dr Lester Grinspoon. In his name, Barney’s lab have created a truly relaxing strain which, when given the time, unfurls to create a wonderful plant. Packed with an astonishing 26% THC content, it will be hard to find a more potent strain than Dr Grinspoon.

This is a plant which requires patience, taking up to 95 days to flower. Growing between 140cm and 160cm both indoors and outdoors, and producing a modest yield of 350gr/m2, this may not be a plant for the novice collector. However, for cannabis connoisseurs, this is an essential addition to any grow, as it is a rare strain which boasts purely Sativa genetics.


  • Classic Sativa Heirloom
  • 26% THC
  • Tall Plant
  • Fully Feminised


Dr Grinspoon releases sweet, tangy flavours which will fill the air a summery pine scent.

A Must for any True Collectors.

Germination of cannabis seeds is illegal in the UK and prohibited by Killabeez.

Cannabis Genetics Heirloom Sativa Strain
Variety Sativa
Flowering Type Photoperiod
Sex Feminised
THC 26%
Yield Low,Medium
Height Notes 160cm
Grows Greenhouse,Grows indoors,Grows outdoors
Flowering Time 90 - 95 Days
Effect Focused, Talkative, Cerebral, Long Lasting

Flat-Rate Postage

Order your gear from KillaBeez SeedBank and we'll only charge a small, flat-rate based on destination country for each order. By asking each customer to cover the actual cost of their delivery, we're able to keep the prices of our cannabis seeds as low as possible. Every parcel departs via Royal Mail and include a tracking number that you can use to watch its progreass as it moves the postal service to your door. Or, you can just ask us & we'll be happy to track it for you!

From time to time, we may offer special coupon codes so that you can add FREE SHIPPING to your order. Sometimes, this will be based on a customer's individual order history. Other times, it may be a general promotion that's available to all of our newsletter subscribers. Sign up now to make sure you always know about our latest deals!

Free Seeds


Every order you make at KillaBeez will include a generous selection of free, brand-name, 100% feminized cannabis seeds carefully selected for their performance and robust features. Some may be autoflowering, some may contain astronomical THC levels and some may just taste amazing. To make sure frequent shoppers never get bored, we change up the selection on the regular. Curious about what's on today's menu? Our free seeds page always has the latest updates.

Price Match

The KillaBeez team goes above & beyond to make sure our seeds are of the highest quality and the lowest prices. However, not even we can be perfect all the time. If another seedbank has the exact same item on their site for less, we'll match their price. Already ordered? No worries! Just let us know within 30 days of your order date & we'll take care of it. How's that for peace of mind?

Write Your Own Review
You're reviewing:Dr Grinspoon


Order a pack that's not quite to your fancy? Contact your friendly seed specialist within 30 days of placing your order at KillaBeez SeedBank and they'll be happy to give you a return authorization so you can send them back for an exchange or full refund. All returned seeds must be shipped back using trackable mail and in the same condition they were received. Please include the RA number, original order number, reason for return and your contact information. We'll process your return within 3 days of receipt, but refunds can take longer depending on your original payment method.