Hi,

One of my small seedlings, key lime probably, has red veins on leaves, it is very interesting.



I checked "Identification of Mites, Insects, Diseases, Nutrition Symptoms and Disorders on Citrus" by UOF but couldn't find a photo showing a similar problem.

Do you know what is this?

I knew it is something weird So, no one has an idea?

Hi MeyerLemon, just chiming in here to let you know someone is seeing this. I don't know what this could be - very strange to me. Someone will respond I'm sure, but with Christmas & all the bad weather we are having, everyone's busy (except me now cuz I can't sleep).
Reminds me of vericose veins LOL. Good thing that the leaf is still green. Any leaves dying?

Mehmet I have not seen this before. Malcolm Manners is probably the best person to ask about this.

One thing I do see is the tip of the leaf is burned as well. Is it possible it is over fertilized ? It is possible salt build up can cause symptoms like this.

boron toxicity or some other mineral toxicity maybe???

It's obvious to even to a amateur like me . . . It's varicose veins.

Phillip

Thanks for your replies

Patty, I know you were checking, thanks It lost the leaves too, only few green leaves survived.

Laaz, over fertilizing is possible but I fertilized as always and used the same fertilizer-added-water for all the plants and only this one had the problem.
They also have the same container medium.

morphinelover, I checked boron toxicity photos and it is not the same I think, but of course I am not sure about other minerals

Phillip, Patty mentioned that too, so it will prefer longs this summer

Btw, the leaves are turning to normal green now slow by slow.

Best,

Sometimes young seedlings have some trouble readily absorbing certain nutrients.

One long standing issue in Citrus is that we just do not know what the effects are of more than one nutrient imbalance occurring at the same time in a plant.

As an example: when I see red veining on leaves on other plants I feel the primary culprit is lack of Potassium. That does not mean that Potassium is lacking in the soil. It can, however, mean that the plant is not yet capable or ready to adequately absorb and transport Potassium throughout its system.

With a Potassium imbalance combined with a Nitrogen imbalance then we may see a yellowing of the leaves with red veins, red to purple colored margins on Corn, so we tend to think that one nutrient is causing the problem yet it is a combination of two nutrient imbalances occurring at the same time.

My initial question when I saw this photo was how many leaves look like this? Is it just one leaf, a few leaves or are there many leaves with the red veining? I bet the answer is just a few. When the roots are better able to absorb and assimilate the nutrients provided by fertilization, this red veining issue should clear up. I've not seen an entire plant have this, red veining, condition before but I have seen it in some very young seedlings in the past. Sometimes the amount of ambient light we artificially give these seedlings and soil temperature can affect the water and nutrient absorption rate of a plant but even still the primary issue is generally felt to be a nutrient imbalance that causes the red veining, rather than a nutrient excess or an insect or fungal disease caused condition.

Jim

Thanks a lot for your detailed and explaining reply Jim.

Actually, the red leaves were almost every leaf but this is a very small (8-10 leaves) seedling, smaller than one year old.

It lost all the leaves except 2 and I hard pruned the seedling.Now, those 2 leaves are green and lost the red veins, it was a temporary situation.

Best,