Sir Jack

Sir Jack
Add to cart
  • Free gift
    with every purchase
  • Secure
  • Discreet
  • Free
    shipping (*)
  • Protect the planet

Sir Jack, developed by Exotic Seeds, comes from a very special selection of Sensi Seeds Jack Herer with intense incensed and lemony scent and strong Sativa effect. Now available in Alchimiaweb.

This selection of Jack Herer was developed by self pollinating the female clone, thus being a S1 cannabis strain.

This 70% Sativa genetics grows robust and vigorous, needing around 10 weeks of flowering indoors. It is ready to harvest by October if grown outside.

Yields are high, up to 550-600gr/m2 of frosty and compact buds. Exotic Seeds recommends keeping low humidity levels during bloom to avoid problems with fungi like Botrytis.

Sir Jack's scent is spicy, incensed and lemony, while the high is stimulating and uplifting, more relaxing after a while.

Sir Jack was awarded Best Outdoor Sativa at 2016 Alacannabis and Viña Grow cups.

Exotic Seeds Sir Jack info:

  • Genetics: Jack Herer S1
  • Type: Feminized seeds
  • 70% Sativa - 30% Indica hybrid
  • Indoor flowering: 10 weeks
  • Outdoor harvest: October
  • Yield: 550-600gr/m2

We would like to remind our customers that cannabis seeds are not listed in the European Community catalogue. They are products intended for genetic conservation and collecting, in no case for cultivation. In some countries it is strictly forbidden to germinate cannabis seeds, other than those authorised by the European Union. We recommend our customers not to infringe the law in any way, we are not responsible for their use.

Sir Jack related products (Exotic Seed)

Harley Qinn

Harley Qinn


From 19.10€ 25.50€

Snow Bud high altitude

From 21.20€ 24.95€

UP TO 35%
Break Up Cake

Break Up Cake


From 8.80€ 11.00€

Black Jack CBD by Sweet Seeds

From 18.90€ 27.00€

Frozen Black Cherry

Frozen Black Cherry

Anesia Seeds


White Runtz Fast Flowering

White Runtz Fast Flowering

Humboldt Seed Organization

From 31.50€ 35.00€

Opinions about Sir Jack and questions

Do you want to give your opinion on Sir Jack or ask a question about this product?

To be able to post your comments you must be identified as a user. Identify yourself or sign up as a user.

Today we recommend you...

Seed selector


Do you want to get email notifications about our latest offers and news? Reviews with