What's wrong? (Yellow and black leaves)

cjohansenMarch 20, 2014

I have lots of seedlings growing under CFLs, much like I did last year. 2013 was my first year, and things went pretty smooth. Now my seedlings are under-developed, some have yellow leaves, some have black leaves, and a few look entirely stunted and have even started dropping leaves. I have no idea what's wrong. I'm pretty confident I don't overwater, and I also don't think I am underwatering. The CFLs are 30w, and don't give off too much heat. Could they be cooking anyway? Any other suggestions?

This one is quite healthy:

My setup:

Thank you for reporting this comment. Undo

If those were my plants, my first thought would be that they are severely undernourished.

Doesn't look like a heat issue, but put a thermometer in there to be sure.

    Bookmark   March 20, 2014 at 2:10PM
Thank you for reporting this comment. Undo

Can't remember if it's lack of P or K. Research it a bit and come back and remind me...lol


    Bookmark   March 20, 2014 at 2:40PM
Thank you for reporting this comment. Undo

Thanks, I'll try to hit them lightly with fertilizer. I'm using the same kind of soil as last year, and didn't fertilize until June or something, so it's a bit of a surprise, but worth a shot, for sure.

    Bookmark   March 20, 2014 at 5:10PM
Thank you for reporting this comment. Undo
seysonn(8a WA/HZ 1)

I have had EXACT the same problem with my peppers. Now they are getting better. I call it "PURPLE" not black.

Anyway, I increased the fertilized and kept the lights farther away and shortened the hours. Now no more purple but some are still yellow. I don't want to push them right now because I don't want them to grow too big, inside. Once planted out, I can take care of them, I know how.

Here is a picture of mine about 5 weeks ago

    Bookmark   March 20, 2014 at 5:17PM
Thank you for reporting this comment. Undo
esox07 (4b)

The dark color is pretty common with pepper seedlings. I think it has to do with the artificial light. I have several that are exhibiting the purple coloring on leaves. I don't think it is signaling any real problems and unless the pepper is of a variety where the dark coloring is natural, I think it will clear up soon after getting outside in the real sun. I dont think any of those peppers pictured above look bad at all, maybe a little leggy, but that is it. I wouldn't be worried.

    Bookmark   March 20, 2014 at 11:59PM
Thank you for reporting this comment. Undo
seysonn(8a WA/HZ 1)

I think you are right , Bruce.
Not all my seedling were affected that way. Bu they were all treated almost the same way. The one in the picture ( a Thai Chili) was the most severe case.
It is possible that different peppers have different light or cold sensitivity.

    Bookmark   March 21, 2014 at 2:22AM
Sign Up to comment
More Discussions
Show Your Seedlings
After all that work, gathering seeds, trying to germinate,...
Seysonn_ 7b-WA/HZ1
best flavored of the "super hots"
I am sort of reluctant to use the words "super...
Seed question
I have been very curious about this matter. I planted...
Bhut Jolokia best growing conditions?
I have some Bhut Jolokia peppers coming in the mail....
Cooking With Fresh Peppers
When we talk about chili/ hot peppers, hot red peppers...
Seysonn_ 7b-WA/HZ1
Sponsored Products
Powell Bourbon Street Yorktown Cherry Bar w/ Black Granite Top
Beyond Stores
Tech Lighting | Kable Lite 600W 24V Magnetic Surface Mount Transformer
$800.00 | YLighting
Illumine Outdoor Lanterns. 4-Light Flat Black Wall Mount Lantern with Clear Seed
Home Depot
Evoke Wall Decor
| Dot & Bo
AICO Furniture - After Eight Curio in Titanium - 19505-16
Great Furniture Deal
High Gloss Black / White Coffee Table
Swim Time Oval 12-mil Clear Solar Blanket for Above Ground Pools - NS492
$75.99 | Hayneedle
Alloy Iceland 1/2 x 4 Stacked Glass Tile
$17.50 | TileBar
© 2015 Houzz Inc. Houzz® The new way to design your home™