Help identifying problem

pbud · March 22, 2008

At first I thought this might be some kind of sunscald as it developed when I rather abruptly put plants out into the sun (no more room under lights). New leaves don't look like these leaves, but they may develop this problem (or maybe not). Any ideas of what this is?
Thanks!
Paul

dice · March 22, 2008

It looks like partial sunburn, where the leaves
were unevenly moist when the sun hit them.
(We were just discussing something that looked
similar in another thread. Usually simple sunburn
affects the whole leaf, since the sun is shining on
all of it.)

Could be evidence of some garden bug chewing
on them, but if that were the case, it would
probably be chewing on the new leaves, too.

Leaves on plants that have been frost damaged will look
like that after awhile. At first the damaged areas just
look sort of purplish and dark green, collapsed cells etc,
but eventually the dead areas look like that. I am guessing
that you would probably know if they had been out
in sub-freezing temperatures and have guessed that,
so sunburn is more likely.

amideutch · March 24, 2008

That is a strange one. You would think if its sunburn it would be more symmetrical as water has a tendency to bead up on the leaves. If it is a bug it only likes the surface of the leaf. I would spray with neems or some other similar organic spray for chewing insects. Ami

Worth1 · April 2, 2008

I get this from time to time and it is of no worry.

Very young plants will get this and all you need to do is to pinch off all of the effected leaves and the plants will grow out of it.

Looks like some kind of tomato leprosy.
If you don't it will spread to other plants.

Don't ask me what it is.

Carolyn mentions something like this in her book and it is what she recommends, so I guess all of these years I was doing it right.

That is IF this is what she talked about in her book.

Worth

pbud · April 2, 2008

Thanks all, for your insights. So far the plants seem to be doing ok. I did pinch off some of the problem leaves, but not all. The problem doesn' t seem to be spreading so I'm hopeful that once the weather warms up a bit they will get even healthier. Interestingly, JD's Special C-Tex is the only variety (of about 10) that had not the slightest blemish and it was right amongst the others that were suffering. bigger.

March 22, 2008	#2
dice Tomatovillian™ Join Date: Jan 2007 Location: PNW Posts: 4,743	It looks like partial sunburn, where the leaves were unevenly moist when the sun hit them. (We were just discussing something that looked similar in another thread. Usually simple sunburn affects the whole leaf, since the sun is shining on all of it.) Could be evidence of some garden bug chewing on them, but if that were the case, it would probably be chewing on the new leaves, too. Leaves on plants that have been frost damaged will look like that after awhile. At first the damaged areas just look sort of purplish and dark green, collapsed cells etc, but eventually the dead areas look like that. I am guessing that you would probably know if they had been out in sub-freezing temperatures and have guessed that, so sunburn is more likely. __________________ -- alias

March 24, 2008	#3
amideutch Tomatovillian™ Join Date: Feb 2006 Location: Germany 49°26"N 07°36"E Posts: 5,041	That is a strange one. You would think if its sunburn it would be more symmetrical as water has a tendency to bead up on the leaves. If it is a bug it only likes the surface of the leaf. I would spray with neems or some other similar organic spray for chewing insects. Ami __________________ Life's journey is not to arrive at the grave safely in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘...Holy Crap .....What a ride!'

April 2, 2008	#4
Worth1 Tomatovillian™ Join Date: Feb 2006 Location: Den of Drunken Fools Posts: 38,539	I get this from time to time and it is of no worry. Very young plants will get this and all you need to do is to pinch off all of the effected leaves and the plants will grow out of it. Looks like some kind of tomato leprosy. If you don't it will spread to other plants. Don't ask me what it is. Carolyn mentions something like this in her book and it is what she recommends, so I guess all of these years I was doing it right. That is IF this is what she talked about in her book. Worth

April 2, 2008	#5
pbud Tomatovillian™ Join Date: Mar 2006 Location: Bay Area Posts: 173	Thanks all, for your insights. So far the plants seem to be doing ok. I did pinch off some of the problem leaves, but not all. The problem doesn' t seem to be spreading so I'm hopeful that once the weather warms up a bit they will get even healthier. Interestingly, JD's Special C-Tex is the only variety (of about 10) that had not the slightest blemish and it was right amongst the others that were suffering. bigger.