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Tue, Jun 17, 14 at 19:27
| This is my first time growing tomatoes and they were doing great. However, I noticed today that the leaves are darkening, almost black. We did have a lot of rain last week, is that it? I checked the plants for bugs and didnt see any. I'm growing 5 plants in containers and it only seems to be happening to 2 of them (both big pink variety.) They are in an organic soiless mix and I've fed them with fish/seaweed emulsion along with a little tomato tone. Can I fix them?! |
Follow-Up Postings:
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| I see the dark veins...they sure look healthy to me! |
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- Posted by missingtheobvious Blue Ridge 7a (My Page) on Tue, Jun 17, 14 at 21:05
| It could be the rain. What have your high and low temperatures been? |
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- Posted by suncitylinda 9A SoCal (My Page) on Tue, Jun 17, 14 at 21:33
| Maybe its a nutritional issue of some type? Tomatoes are heavy feeders and it can be pretty difficult to get organic right in containers. |
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- Posted by amazin10grace none (My Page) on Tue, Jun 17, 14 at 21:52
| Last week it was in the 70's during the day and high 50's at night but it rained all week. The past couple days have been very humid and in the mid 80's. The parts that look dark green in the pic are almost black looking in real life. Maybe it's the variety? |
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| It is phosphorous deficiency and both of the fertilizers you are using are low phos so some additional supplement is needed. Soft rock phosphate is the quickest acting organic, a dose of MG the fasted synthetic solution.. You can Google pics of 'phosphorous deficiency in tomato plants' for pics to compare if you wish. As Linda said, it is difficult to grow organically in containers. There is no soil food web to feed the plants so you have to provide all the nutrients on a regular basis and during periods of heavy rain that often means weekly. Dave. |
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