Member discussion regarding the methods, varieties and merits of growing tomatoes.
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#31 |
Tomatovillian™
Join Date: Jun 2016
Location: 7B
Posts: 150
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It's has 2 feedings of fert in my no fert potting medium.
Between that and or maybe dialing back the intensity of the LED lights - but glad to report that all the leaves are nice and green ! |
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#32 |
Tomatovillian™
Join Date: Feb 2018
Location: Plainfield Illinois
Posts: 9
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I am playing around with LED's this year as well. I had the same issue as you with all of my tomatoes. Purple underside of leaves. I did fert but it didn't help. I think it may have something to do with the strength of the LED's. I have a 45 watt and a 300 watt. The tomatoes were under the 300 and I had it raised about 10-12 inches above. They were not growing much, in fact some of the leaves started to dry out even though the soil was moist (not wet). Now I am not sure if they just out grew the purple leaves or what I did next was the reason. I raised my 300 watt an extra 12 inches. Soon as I did that, the tomatoes really started thriving. Nice thick stems and root system. So many sights say put the LED just a few inches above them. I'm not so sure about that. I saw one video which demonstrated that too strong of an led light bombarded the plant in so much photons that it stunted the growth. Hope this helps, and I would not worry so much about the purple leaves in your seedlings.
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#33 |
Tomatovillian™
Join Date: Feb 2012
Location: Newfoundland, Canada
Posts: 5,065
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Oh, wow. Really helpful to hear about this, thanks!! Just googled "LED stunted growth" and found a lot of confirmation about that.
![]() Example this manufacturer: https://justledus.com/keeping-your-l...oper-distance/ " In most cases your plantation will be stunted if the light is hanging close.." ".. if you keep your light at an affixed height, the plants will reach a certain growth point, then grow wider and form more vegetation.." That's what I thought about my bok choy - they stopped getting taller instead of growing up into the light... I'm almost tempted to try stunting some of the large tomato seedlings now before they get leggy! ![]() ![]() |
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#34 |
Tomatovillian™
Join Date: Dec 2017
Location: Detroit
Posts: 212
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That would be quite interesting if you could temporarily arrest the vertical growth of the main stem and encourage side-shoot growth instead!
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#35 |
Tomatovillian™
Join Date: Jun 2016
Location: 7B
Posts: 150
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Vertical grown is happening for me. Stems are getting nice and thick. What is interesting is just the leaves/sides are much more bushier than *vertical*. Some of these go out 7-8 inches with about 10 leaves on them. I just eyeballed it and it's about a inch between each growth on the stem.
I am finding that with this sort of light, I'm needing more space / grow lamps as I have to ~open up the spaces more~ between each pot. more to give the leaves some room. Last edited by mobiledynamics; 1 Week Ago at 04:42 PM. |
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