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Grow QuestionsSwitching from veg lights to flower lights (blue to red) ?

Switching from veg lights to flower lights (blue to red) ?

Grow_with_usstarted grow question a year ago

With autoflower when do I switch from veg (5000k-6500k)blue light spectrum to flower lights(3000k-4000k) w/ red infrared ? Should I switch lights right when pistils start showing or wait until after the flower stretch when buds are forming?

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Setup. Lighting

mcflowanswered grow question a year ago

Autoflowers generally don't require a change in light spectrum like photoperiod plants do. They automatically transition from the vegetative stage to the flowering stage based on age and don't rely on changes in the light cycle. However, if you're using different color temperatures in your lighting setup, you can consider adjusting the spectrum as your plants progress. Here's a general guideline: Early Veg to Late Veg: During the early vegetative stage, higher color temperatures (5000k-6500k) with more blue light can encourage compact, bushy growth. As your plants progress through the vegetative stage, you can maintain this spectrum. Transition to Flowering: As your autoflowers start to show signs of pre-flowering (pistils emerging), you may consider introducing a spectrum with a mix of red and blue light (3000k-4000k). This balanced spectrum can support both vegetative and flowering growth. Bud Development: As your plants enter full flowering and bud development, maintaining a spectrum with more red and infrared light can be beneficial. This spectrum supports flower development and can enhance overall yields. Remember, autoflowers are generally less sensitive to light spectrum changes than photoperiod plants. While adjusting the spectrum can potentially optimize growth, it's not as critical as maintaining the right light intensity and duration throughout the plant's life cycle. Good luck!🍀

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Selected By The Grower

Loserofthemonthanswered grow question a year ago

I would answer but you don't have a diaty strated.

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Sciolistic_Steveanswered grow question a year ago

some of my best grows were with a 2900K diy light from seed to harvest. Switch anytime you want. I prefer a lower CCT temp at all times. Concentration of pigments in leaves reacts to the light it is given over time... in order to best make use of the light. While i believe the research that says this wavelength have an impact on morphology, it's an extrapolation to have drastic shifts in light. The research never tested that. Not sure if they have done others with a more specific scope or not, but i don't assume and i'm not searching, lol. probably small potatoes even if it is a measurable difference. The point is, there's reasont to hestiate about such a plan. Just as there is some wasted resources when converting from solid substrate to hydro. the roots have to grow differently i each medium to maximize their function. if the plant is spending resources converting existing plant mass, the opportunity cost in some form is lost vege or bloom growth, all other things remaining the same. defintitely need some hefty sample sizes to flesh that out properly. so if this is your plan, just do it. it won't make much of a different either way. I would switch to flower when you flip light schedule or when auto shows some preflowers. (even though that means the autoflower was in bloom about 5-7 days prior to you being able to see / discern sex)

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