If you look at the time stamp in my two images, you'll see that I've only been doing this for about 6 weeks. So there's not really much to share so far, other than my lemon tree sprouting 50 blossoms after I put it under the light. And without a control tree, we don't really know if it was the lights that caused it. The tree was on my front porch on October 29th, and was brought inside on November 1st. So it may have been the increase in temperature that made the tree think; "Wow! It got warm all of a sudden. It must be Spring! Time to make babies."
The other plants I'm growing are:
3 year old sage plant
2 x 1 year old Thai hot pepper plant
3 year old Thai hot pepper plant (looks dead, but teeny tiny leaves are starting to grow)
I was going to say that the "Thai hots" are not a good indicator, as I thought they were annual plants, but one website says
Most people are not aware that peppers are actually perennials! The reason they are usually grown as annuals is because the winter temperatures in most places will kill them. They are semi-tropical plants, and just cannot handle cold weather. However, it is possible to keep a pepper plant alive for several years, via a technique known as "overwintering". [
ref]
I did not know that.
In any event, I believe your original question was answered:
Answer: no
And in answer to your second question:
Answer: Quite well, IMHO. They mimic the appropriate spectral range of sunlight.
As to your third question:
I disagree with baluncore's statement:
Violet light, according to my records, has a wavelength between 380 and 450 nm, and only covers the absorption range of Chlorophyll a.
But, as I mentioned earlier, I have zero knowledge of biology, so I may be misinterpreting his statement.
I'm also confused about the "bandwidth" statement, that at least a couple of people have mentioned.
Both my red and blue LED lamps appear to be somewhat "broadband". I will have to do further research on why that is.
Here's an experiment I did last year:
View attachment 216794
Not knowing what my unknown "bright white" light was, I did some more searching.
Same day, different unknown "bright white" bulb:
View attachment 216796
From todays experiment, I've decide the first unknown bulb was a white LED, and the second, was a CFL(compact coiled fluorescent).
View attachment 216800That's ok. Lying in bed this morning, I decided it was a silly question, and decided on a course of action. Science!