Help, sick basil!

tracydr(9b)April 26, 2010

My basil is sick. It's leaves are turning yellow, pale and the stems are turning brown, withering and some of the stems are dying.

I looked at some pitures of fusarium wilt. I don't think it has that although it looks very similar. It's been limping along for weeks which makes me think it's not this either. I have about 6 plants, all in various stages of failure to thrive.

They all looked great until transplanted about 4 weeks ago. There were two from HD transplanted almost 2 months ago. I thought they were not thriving due to cold weather but now I'm beginning to wonder.

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May be you are watering them too much?
Yellow pale green is normayl due to lack of Nitrogen. Since nitrogen is water soluable ,
it will leach out. That is why you sould use very little of it but more frequently.
I have a bucket of water with normal strength fertilizer in my garden. Once in a while I add about a quart of it to my watering can and then fill it.
Then I water seedlings, basils, parsley, etc. with that.

PS; Some basils are very light green in color. Sweet basils sold at HD are like that too.
Another reason for yellowing could be "not enough" sun.

    Bookmark   April 27, 2010 at 1:01AM
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I just can't imagine that it's watered too much. It's pretty good drainage in the soil. But, it has gotten worse the last couple of days and they did get watered a lot the past two days.
They are in full, full sun. There are several varieties. The worst are the lettuce leaf and sweet basil.
I'll give the nitrogen a try and let it dry out a bit this week. Thanks!
I have the worst luck with basil. Everything else seems to grow really well, despite many mistakes that I make.

    Bookmark   April 27, 2010 at 1:30AM
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Sometimes the leaves turn yellow do to over watering. Thant might be the issue with your plant.

    Bookmark   April 27, 2010 at 2:55PM
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I looked hard today. I think the stems are rotting. It does look like deeper in the soil it's pretty damp. I'll be out of town for a few days and it's really hot this week so I'll let it dry out. Hopefully, will be alive instead of dead when I get home!

    Bookmark   April 27, 2010 at 3:12PM
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I've got some basil plants (the first I transplanted outside) that are suffering from "failure to thrive," and I'm betting that my problem is that I put them out too soon while we were still having cool days and almost cold nights. Basil HATES the cold. I've decided that I'm simply going to have to dig them up and either direct seed now that it's warm or get new plants.

    Bookmark   May 5, 2010 at 11:59PM
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I think it is a combination of iron deficiency and too wet poor drainage. When I checked the soil it was wet about 3 inches down even though the top few inches was dry. Also, after asking the question the leaves began to get more signs of iron deficiency.
I may have lost the thai basil but I gave iron supplement and seaweed solution to everyone and stopped watering for a week. Everybody looks a little better.
Good news is that I held off planting all my other basil plants while trying to figure this out. I just planted them this week and last in different garden sections (several with tomatoes, a few on the side of the house in my winter lettuce garden) and they seem to be thriving, even having grown in the few days since transplanting.
I would really, really like to have enough basil this summer to put some in the freezer with EVOO/garlic. I like basil more than any other herb, almost more than any vegetable. If I could only grow one thing it would probably be basil and it's been my nemesis forever.
Okra got eaten by a bunny this week, BTW and apparently bunnies don't like basil, LOL!

    Bookmark   May 6, 2010 at 10:45PM
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Check the temperature, especially nighttime temps. Basil needs warmth to prosper. Protect it from cool weather until nighttime temp stays at 55F or better. If temp is not the issue, you may indeed be watering too much. Test the soil by poking your index finger down to the second knuckle, if it comes out dry, water thoroughly but allow to drain - do not let it sit in water. Continue the "knuckle test" until the plants are well established.

    Bookmark   May 7, 2010 at 12:23AM
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jojosplants(9/ Tucson, Az.)

Hi Tracy,
Good to see it's doing better.

I do think it was over watered. I'm in Tucson, I have basil that came back from last year, Up until a week ago it was only getting rain water! Now that our temps are up and I planted the bed with lettuce I water it daily and it's doing great.

Good luck with the rest.


    Bookmark   May 7, 2010 at 8:47AM
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