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The Reference bank of growing systems, tips and techniques to get the most from our green hobby


The Basics

The simple basic facts about growing cannabis. It really isn't as difficult or complex as you might have read!

  • 43 topics
  • 293 replies
Running Cost Calculator - last post by Clicks

Germination and Propagation

Cuts, grafts and seeds. Learn how to successfully start the journey.

  • 20 topics
  • 216 replies
CARBON COPY - FLYING SKULL - last post by madgoose


The vegative phase of the cannabis lifecycle. Tips and techniques to make the most of this important stage of a plants life.

  • 5 topics
  • 31 replies
Vegetative growth - last post by Clicks


The flowering phase, how to sex, tips on feeding and anything related to the flowering stage of the cannabis lifecyle.

  • 7 topics
  • 176 replies
quantum leap a fossil goes... - last post by Wrh

Harvesting and Curing

Learn when and how to harvest your plants and how to cure the finished goodies to get the best out of all that hard work

  • 18 topics
  • 272 replies
glass airtight or smell pro... - last post by Adina Chris

AutoFlowering Cannabis

Tips, tricks and the lowdown on the fast developing world of Auto-flowering Cannabis Strains

  • 7 topics
  • 75 replies
Ninja turtle seeds. - last post by no1

Making Hash, Oils, Concentrates

How to turn your buds (and trim) into something special

  • 75 topics
  • 2,609 replies
Making Oil, Denots Way. - last post by dal

Advanced Growing Techniques

Learn and share advanced techniques and experiments for growing the 'erb

  • 24 topics
  • 376 replies
Anybody used molasses in coco? - last post by Forest

Grow Room Design and all things DIY.

Grow room designs and builds, home made hydro systems, lights, fan silencers, . You made it? It goes in here.

  • 127 topics
  • 3,156 replies
RVK fan noise fix. - last post by madgoose

Growing Cannabis Outdoors

A place for people to learn and share about growing outdoors. Guerrilla Growing, Back Gardens, Greenhouses, Polytunnels and Sheds.

  • 18 topics
  • 349 replies
Upcoming Outdoor Grow Season - last post by 2scoops

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Disclaimer: You must be over 18 years old to view/use this website. T-G-C.nl does not encourage growing cannabis or possessing cannabis, Learning how to grow cannabis is purely for educational purposes. All information on this website is strictly for: Historical reference, Scientific reference and educational purposes. Please check the laws in your own country as T-G-C.nl is in no way responsible for repercussions of accessing the website. All information is stored on a secure server in Amsterdam. We advise all visitors against breaking the law.