[Betterhaff]

I read some info on another site that was relayed from the CBD crew. According to what they are finding CBD is earlier than THC so if you want more CBD and less THC you harvest earlier. This is contrary to what was believed earlier…run longer for more CBD development. I’m sure there are some differences between strains (or phenos) but it probably is a general theory for all. Their gear is based on a 1:1 ratio. I guess the big question is…what is earlier?

Supposedly one of the breeders was having testing done at varying stages of development but results were not posted.

[MR_Falcon]

My cut of ambulance from 303 seeds tested at 8% thc/8% cbd when taken at 65days. When taken at 75 days it tested 8% thc/ 10% cbd. Just food for thought really, I'm not fully confident in lab results yet.

[barnyard]

depends on the timing and the part of the plant that's being tested...just prior to flowering the grow tips are most potent and when flowering start potency drops...its the leaves with the CBD, how do you harvest CBD from the leaves?

[Bongstar420]

someone posted here on the forums a gwpharma report on Sativex strain grows....all of them trailed off on THC with CBD holding steady later in harvest.

My Cannatonic cut came in with a higher CBD ratio than was reported for the cut. The gwpharma report discussed factors I suspect yielded this result.

Assumed report for the clone:
https://www.facebook.com/24250135925...type=1&theater

I took her to 77 days

Originally Posted by MR_Falcon

My cut of ambulance from 303 seeds tested at 8% thc/8% cbd when taken at 65days. When taken at 75 days it tested 8% thc/ 10% cbd. Just food for thought really, I'm not fully confident in lab results yet.

[PrimalHaze]

There's not much info online about harvesting CBD plants. CBD crew says their CBD enriched crops take longer from start to finish than normal THC plants.

This book about SATIVEX production from GW pharma details harvest dates and light schedules for maximum CBD production. It's around page 130:

https://archive.org/stream/CANNABISS...ge/n1/mode/2up

[Bongstar420]

That was awful sweet of you to post that up for them there like you did

Originally Posted by PrimalHaze

There's not much info online about harvesting CBD plants. CBD crew says their CBD enriched crops take longer from start to finish than normal THC plants.

This book about SATIVEX production from GW pharma details harvest dates and light schedules for maximum CBD production. It's around page 130:

https://archive.org/stream/CANNABISS...ge/n1/mode/2up

[ghostmade]

Ol

[creativeprocess]

Any updates?

[PDX Dopesmoker]

Originally Posted by slowandeasy

Obviously not one of you knows the true answer, I want proof....not guesses and "when it is ripe" answers. If CBD levels are higher sooner than THC, do they drop sooner than THC? If you are just guessing, save your breath.....I can guess too. I want proof

THCA decays much more swiftly than CBDA, so the later you harvest the more THCA you will have lost. Its not really possible that one gets created before the other when growing in the plant because CBD & THC have the same precursor chemicals, so the creation of the precursors will determine when THC & CBD begin to appear. Since THC & CBD creation aren't independent of each other, the main factor determining the relative amounts of the two cannabinoids is how much you lose in the growing process rather than how much you create and since CBD is more stable it will stick around longer while the THC will decay to CBN.

[GoatCheese]

Originally Posted by Betterhaff

I read some info on another site that was relayed from the CBD crew. According to what they are finding CBD is earlier than THC so if you want more CBD and less THC you harvest earlier. This is contrary to what was believed earlier…run longer for more CBD development. I’m sure there are some differences between strains (or phenos) but it probably is a general theory for all. Their gear is based on a 1:1 ratio. I guess the big question is…what is earlier?

Supposedly one of the breeders was having testing done at varying stages of development but results were not posted.

Yea i've read the same thing.
I understood that for best CBD levels for a 10 week strain, you could harvest it around week 8.