reducing stretch in first weeks of bloom

Stealthstyle

Well-Known Member
I have tried lowering lights which works a bit and also feeding veg nutes for the first few weeks of flower but are there any other ways to reduce stretch in the start of bloom?
 

jondamon

Well-Known Member
A while back I had good results reducing stretch & speed up bud onset by dropping the hours off gradually over a week. Every day I turned the lights on an hour later & off an hour earlier until I hit 12/12. But it could’ve been a low stretch strain. I think its in one of my journals I put on here
This will work because you’re mimicking nature!

I have tried lowering lights which works a bit and also feeding veg nutes for the first few weeks of flower but are there any other ways to reduce stretch in the start of bloom?
Keeping an MH light running instead of sticking to HPS for the first 2 weeks of 12/12.

feeding slightly elevated levels of N can also help to slow stretch down.

super cropping, LST, throw a net over them etc.
 

Star Dog

Well-Known Member
I've heard and tried various methods the most successful for a unruly plant/top is fimming, it also encourages the shoots below to catch up to the canopy.
_20210606_134032.JPG
You can see in blue where the bottom shoots have grown up to canopy level much more than any others, original fimmed shoot in red 9 days ago.
_20210605_143337.JPG
I should've fimmed it
_20210606_135425.JPG
The above shoot was another of the more dominant tops that wasn't fimmed its growing 1" a day atm
_20210606_134607.JPG
 

end_of_the_tunnel

Well-Known Member
You could also look into temperature difference for day versus night. A google for "negative DIF" brings up lots of interesting results. TLDR, you could try dropping the temperature for the first three hours of light.

 

jondamon

Well-Known Member
You could also look into temperature difference for day versus night. A google for "negative DIF" brings up lots of interesting results. TLDR, you could try dropping the temperature for the first three hours of light.

I read a while ago that keeping the day and night temps pretty much the same helps to reduce it also.

Ultimately though I believe there many variables that contribute to stretch with the biggest variable being the strain itself, followed by environmental variables, followed by nutrient variables.
 

Dodgey99

Well-Known Member
Lighting spectrum. Lighting spectrum categorically, in my experience, has a HUGE effect on stretch. I know this because I grow the same plants (cuttings from mother) many times, and I've recently been switching between veg MH, then flower Blurple (Mars) LED, OR, veg MH , then flower HPS. I'm comparing yields.

When I do it the LED way I get minimal stretch. When I do it the HPS way I get massive stretch, every time. It's as clear as day. I've never, ever had big stretch with Blurple LED, adn that is with different strains too.

Clearly the Blurples have got a lot of blue light content which is clearly satisfying the plants' needs.
 

Star Dog

Well-Known Member

Dodgey99

Well-Known Member
1st is HPS - current grow - had to do some serious bending to keep them from the light. The light is almost at max height already.

HPS.gif

Next up is the previous grow - same plants, Stretched on Blurple LED. The LEDS has plenty of scope for going higher.

LED.gif

Finally, as the above was show after moving the camera twice, here is a 2020 grow with Blurple, with a guest cameo from me.

LED2.gif
 

Star Dog

Well-Known Member
@Dodgey99 I love the video its cool as.

it's not what I'd describe as having a big impact on stretch, check the node spacing, they stretch vigorously over the various periods.

Your showing a month of hps compared 20/24 days of other lighting.
 

toomp

Well-Known Member
I have tried lowering lights which works a bit and also feeding veg nutes for the first few weeks of flower but are there any other ways to reduce stretch in the start of bloom?
nobody will want to hear this
when I 1st started out here i used foxfarm line up and open sesame did exactly what it says it does. stretch stopped in 2 days and focused on bud development. Best yields came from fox farm.
 

Dodgey99

Well-Known Member
@Dodgey99 I love the video its cool as.

it's not what I'd describe as having a big impact on stretch, check the node spacing, they stretch vigorously over the various periods.

Your showing a month of hps compared 20/24 days of other lighting.
Indeed - but I selected only the photos where there was stretch happening. I didn't want clips of nothing happening. As soon ast the stretching stopped, I stopped. Perhaps this shows the HPS stretching goes on for longer?
 
>
Top