Indoor vs Outdoor Terpene Expression

[Johnlandy420]

Comparison of the Cannabinoid and Terpene Profiles in Commercial Cannabis from Natural and Artificial Cultivation

Interest in cultivating cannabis for medical and recreational purposes is increasing due to a dramatic shift in cannabis legislation worldwide. Therefore, a comprehensive understanding of the composition of secondary metabolites, cannabinoids, and terpenes grown in different environmental...

www.mdpi.com

I don’t like posting stuff like this because it really ruffles peoples feathers… But I am a trained chemist and IMO these are the gold nuggets more people need to be reading/discussing.
Cheers

 

[Trixie]

Without any cloudy days, rain-less days, and with intense lighting, the terpenes are better preserved on indoor plants. Outdoor dew points and high humidity can inhibit resin production on outdoor plants. That being said, I have grown the same strain many times indoors and outdoors in the same year. The indoor-grown plants always had more trichomes that were well-formed with a stronger aroma. Indoor resin seems a little more clear and takes longer to turn amber. My fav is always indoor next to outdoor. I like them both.

 

[GreenGalaxyFarm]

I don’t like posting stuff like this because it really ruffles peoples feathers…

should be posting more!

i've read the results discussion and have my interest now sparked
im figuring that the circadian molecular timing in outdoor plants receiving the changing spectrum of light given to them, are producing hormones that indoor plants grown under constant spectrum do not. hormones that lead the plant to make changes within itself in response to the changing spectrum of sunlight.

 

[GreenGalaxyFarm]

''Whether the cannabis is grown indoors under artificial lights using artificial growth media or outdoors in living soil with sunlight influences the types and amounts of molecules that are present in the flowers. Indoor samples have a greater preponderance of oxidized and degraded cannabinoids, and the outdoor samples are able to express more cannabinoids with potentially desirable bioactivity.''

very interesting

 

[Zill]

Now throw in a UV-B light source for the indoor plants.

 

[GreenGalaxyFarm]

Without any cloudy days, rain-less days, and with intense lighting, the terpenes are better preserved on indoor plants. Outdoor dew points and high humidity can inhibit resin production on outdoor plants. That being said, I have grown the same strain many times indoors and outdoors in the same year. The indoor-grown plants always had more trichomes that were well-formed with a stronger aroma. Indoor resin seems a little more clear and takes longer to turn amber. My fav is always indoor next to outdoor. I like them both.

more maybe but are they oxidized and degraded trichomes

 

[GreenGalaxyFarm]

Now throw in a UV-B light source for the indoor plants.

you may be on to something.

'' ..low-level UV-B irradiation promotes morphological responses in plants, such as leaf growth, stomatal differentiation, and the inhibition of hypocotyl elongation. Therefore, the morphophysiological responses of plants to UV irradiation vary with intensity and exposure duration. However, even at the same UV irradiation intensity and exposure time plant responses vary with species, genotype, resistance, sensitivity, leaf thickness, and other factors.''
from:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8730333/

so again no studies on cannabis..

''Plants may adapt to augmented UV-B irradiation by increasing secondary metabolite production.''
from:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8730333/

''Glandular trichomes are specialised multicellular epidermal protrusions that function as miniature secondary metabolite producing factories.''
from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8016307/

so theoretically ub-v increases activity within trichomes but no relation to amount of tricomes

 

[Zill]

GG,

check your mail.

 

[Johnlandy420]

Cool. Thought people would lose their mind. Another important note from the article deals with monoterps and sesquiterps. Wanna know why that super danky dank smells sublime but doesn’t deliver in taste. Monoterps burn off at lower temps. So that Grape Gas taste good til the finish because it has a decent ratio of ses/mono.

 

[Johnlandy420]

Without any cloudy days, rain-less days, and with intense lighting, the terpenes are better preserved on indoor plants. Outdoor dew points and high humidity can inhibit resin production on outdoor plants. That being said, I have grown the same strain many times indoors and outdoors in the same year. The indoor-grown plants always had more trichomes that were well-formed with a stronger aroma. Indoor resin seems a little more clear and takes longer to turn amber. My fav is always indoor next to outdoor. I like them both.

Just takes time for breeding/genetics to shift towards greenhouse loving gals.