Strange/deformed SunFlower leaves~

jojosplants(9/ Tucson, Az.)July 14, 2011

I have a Sunflower that has developed the strangest leaves! They are really thick, and odd shaped. Kind of like only half a leaf. The first few sets of leaves were normal.

They are not in containers, but I wanted to post them here anyway due to the amount of people that are growing in ground also here.

We've been growing Sunflowers for about 10 yrs now, and have never seen anything like this before. lol...

Normal leaf

And the row above it , you can see where the odd ones start.

Close up of odd leaf

Top view of plant

JoJo

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tapla (mid-MI z5b-6a)

If it's a nutritional issue, it's almost certainly a micronutrient, and I'd put my money on boron being most deficient.

Other possible causes are nutrient toxicity or phyto-toxins in the soil, or herbicide injury.

Al

Here is a link that might be useful: More reading

    Bookmark   July 15, 2011 at 3:41PM
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jojosplants(9/ Tucson, Az.)

Hi Al~
Thank you! That link you gave has some great info!

If it is a deficiency wouldn't it affect other plants?
I have 8 squash, other sunflowers, and a few other plants in the same bed.

I know it's not herbicide injury, I have never sprayed or used any.

The bed was prepared with home made compost from my parents, and a little bone meal and blood meal. I use a little MG fertilizer once or twice a week.

The plant itself matches what the link suggests for boron, but the growing conditions don't quite match. I'll read it again and yell with questions. lol..

I'll have to read up a little on nutrient toxicity or phyto-toxins in the soil, I'm not real sure what they mean.

It's loaded with flower buds, but the plant it's self is about 3' shorter than what it should be right now too. :-)

Thanks!
JJ

    Bookmark   July 15, 2011 at 5:50PM
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achampag(5b)

bugs or chemical mutant lol

    Bookmark   July 17, 2011 at 9:32AM
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greenman28 NorCal 7b/8a

Hi, JoJo.
Looks like something nibbled the tip of the young leaf whilst it was growing.

Josh

    Bookmark   July 17, 2011 at 1:06PM
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jojosplants(9/ Tucson, Az.)

Hi Josh!
It's the craziest thing I've ever seen in the garden! The entire top half of the plant is this way, and the other 5 or 6 (diff. varieties) are in the same row , and are fine.

It's about 15 leaves .

I'm going to plant a few more of this variety in diff. beds and am anxious to see what happens. ;-)

JoJo

    Bookmark   July 17, 2011 at 1:43PM
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colokid(5)

"The bed was prepared with home made compost from my parents,"
I'm really reaching here for any chemical, like grass weed killer.
KennyP

    Bookmark   July 17, 2011 at 3:49PM
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jojosplants(9/ Tucson, Az.)

Hi Kenny,
Thanks, but no.

Mom and dad don't use any chemicals at all! Dad was raised on a farm, all organic, and they don't even have grass. 5 acres of desert. :-)

I guess maybe I worded that odd.. I was basicly saying I didn't purchase any from home depot or such.. by parents I was thinking organic, but didn't say at the time.

JoJo

    Bookmark   July 17, 2011 at 6:19PM
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