Chat

By continuing to use the website or clicking Accept you consent to our cookies and personal data policy. For details please see Privacy Policy

Accept

Recommended

Recommended

Grow QuestionsDoes a uvb light really increase terpines? Never ...

Does a uvb light really increase terpines? Never ...

MrGiggles420started grow question 6 years ago

Does a uvb light really increase terpines? Never tried and I really wanna try with this grow

Solved

Techniques. Defoliation

like

FlavoursUkanswered grow question 6 years ago

Hi, Plants respond to exposure to both UVA and UVB light; different plants respond in different ways, but in general studies have shown increased production of antioxidants / flavonoids and other natural sunscreen compounds in a process called photomorphogenesis. UVA light alone can increase THC and CBD production in Cannabis plants. The combination of UVA and UVB light (from a standard "reptile bulb" fluorescent light) also increases THC and CBD production, but the inclusion of UVB in the light has noticeable detrimental effects on plant growth compared to only UVA. Best thing to do is do a little bit of research of your own just to clarify. Wouldn't want to be giving you the wrong information. 😀

1 like

Complain

Selected By The Grower

Experimentgreenanswered grow question 6 years ago

Supposedly UVB helps with trichromes productions. I believe super high temps can be a destruction of terpenes however. I think its really multiple factors to consider when boosting the terpenes or trichs...strongest light(uvb not uva), heat and humidity. And of coarse genetics and nutrients, can't leave those out.

1 like

Complain

Athosanswered grow question 6 years ago

Yes. the addition of UV-B light can indeed increase the THC production up to 28% more compared to a plant that was not subjected to that kind of light.

1 like

Complain

Similar Grow Questions

Solved

Question…During drying and curing. With winter I’m using gas for heat, which drops my humidity. Does any one dry less than 7 days before jarring it up? or dry it in paper bags before curing? should I just get a humidifier for when I dry, if so will I have mold ?

Techniques. Defoliation

4 years ago

1

1

Solved

What's the best for curing ? What's the minimum time for curing ? Does the taste changes a lot after 1 month curing ?

Techniques. Defoliation

4 years ago

1

1

Solved

I don't understand this question asking thing tried previously with no results. I only have one question what the **** do y'all think? should I done this? Should I have done that? tell me something, how’s she look ?is she ready? I can handle criticism. Happy growing :)

Techniques. Defoliation

4 years ago

6

4

Solved

Ok so I'm new. On disability so flat broke. What can I feed her? I changed to a big fat 400w bulb. After giving the roots a good chance to grow on an 18/6 schedule, I've topped the 6th node. Pruned the first 2 nodes off...were weak. I gave her 2 days to recover now 24 light

Techniques. Defoliation

4 years ago

2

2

Solved

STAYINGONMYMAINCBATORUNTWO

How am I doing?

Techniques. Defoliation

4 years ago

2

1

Solved

So, I'm getting an upgrade! Moving from the blurple LED to the spider farm sf1000 or sf2000. For those of you that own this lighting series what would you recommend for a 4x4x6.5' tent with four plants. Is the core spread in the sf1000 adequate or is the 2000 what I want? Thanks!

Techniques. Defoliation

4 years ago

8

1

Solved

How do I get more control over flowering start outdoors? In my location, the 12 hours of darkness begins September 25th. 😎 The average chance of frost begins September 15. This year it was earlier. Should I grow auto-flowers outdoors?

Techniques. Defoliation

4 years ago

4

2

Solved

I've had a real issue with defoliation. Not really sure how much leaves to remove without causing harm to the plant. Where should I start and what is a good procedure to follow.

Techniques. Defoliation

4 years ago

3

2

Solved

What are the beige/brown spots a sign of? Why are the two Cookies plants always droopy yet the Blue Dream never droopy and they have all been watered the same. Roughly 1g each every 5 or so days when pots are dry and light. My light is up to 30" so that's not it.

Techniques. Defoliation

4 years ago

5

4

Solved

Anyone have tips to reduce the pH of the water with reliable homemade methods? I'm trying to grow as more self-suficient as possible. Without buying products. Thanks for the help :)

Techniques. Defoliation

4 years ago

3

5

Solved

What's the longest you have had some seeds stored away before you have planted them?

Techniques. Defoliation

4 years ago

3

3

Solved

I decided to look at the trichomes today and I noticed about 10% are turning amber already on the widow. I thought i still had almost three weeks to go is this normal? Some of them are still clear. Today is day 41 since starting flower.

Techniques. Defoliation

4 years ago

6

3

Solved

GreenDiamondGrow

How low is too low for humidity? The closet I have converted to become my grow room has been sitting naturally at around 30% humidity most of the time, and I worry that its too low. I am using a dome I made out of an old 2 liter bottle as a dome for now.

Techniques. Defoliation

4 years ago

3

1

Solved

WILLIAMSII_Fr_Farm

Que me conseileriez vous comme bon produit de bouturage?

Techniques. Defoliation

4 years ago

4

1

Solved

I was wondering if I should defoliation this plant or not. I am growing an auto in the same tent and have another couple weeks before it’s ready to harvest so this plant will be in veg mode for awhile yet. Should I just let this grow and ScrOG it or do some defoliation. Thanks

Techniques. Defoliation

4 years ago

4

5

Solved

I've noticed some pistils starting to turn on the upper bud sites, see the last photo above. My question is, is this ok only 2 weeks in to flower, or have I burnt the pistils with feeding, or lights? It's my first grow, so I'm trying to learn as much as I can. Thanks!!

Techniques. Defoliation

4 years ago

2

1

Solved

She’s got some different growth unknown’s if Polyploidization??? is this good or bad???

Techniques. Defoliation

4 years ago

3

2

Solved

Considering it is an auto strain do you believe it is worth cutting the apex or better off working on one big cola ? If anybody has tried out both and has an input on this, this will be much appreciated :)

Techniques. Defoliation

4 years ago

5

3

Solved

What would you do to these plants?( video and pictures above) They are extremely bushy and im scared of mold From fans not being able to blow air through.My humidity is around 40 to 45 and temp 70 to 77 roughly. Unfortunately i dont have a uv light to help like my flower tent

Techniques. Defoliation

4 years ago

1

1

Solved

Checked out my girls and realised balls growing on 2 of them ( 1 of the Barneys Pinneaple Chunk and 1 of the Seedsman Jack herrer ). They are both feminised seeds and 3 weeks in flower and buds are showing. What should I do, Are theese hermies?

Techniques. Defoliation

4 years ago

3

2