brown on cymbidium leaves

[dra]

I have 3 cymbidiums, purchased in the spring, and growing outdoors since then. I repotted them to a larger pot ( 2 sizes b/c couldn't find a pot one size larger with enough depth) in mid-August. I recently noticed that one plant has a leaf or two with a large brown spot running lengthwise. Some of the other leaves have the occasional brown spot/irregularity. Can anyone tell me what this could be? All 3 growing outdoors, getting direct mid-sun occasionally (recently), otherwise filtered sunlight. Roots are white and green. I have been watering every other day but recently on the heavy side supplemented by any rain. Drainage is good. Thanks

[kid a]

Hello, unfortunately I have no idea. Do you have any pictures you could post? That would help to be able to identify it more easily. Hopefully someone else can help . I don't have any cyms... yet, lol!

[amersault]

hi, dra -

w/o pictures, it's difficult to tell, so please post if you can.

since you seem to be hydrating them a lot, the leaves might be burning from exposure to the midday sun. or, if during the growing cycle, some water seeped between the new growth, this could have led to rot.

i had a few brown tips on mine, but this was due to a dry summer and a tad underwatering. the plant rebounded significantly during the fall rains.

[PhalPal]

Pictures will certainly help, but I'm betting it's sunburn. Cyms can take early morning or late afternoon direct sun but midday may be too much.

Brown tips are very common on Cyms. Two reasons they can occur is #1 hard water with lots of minerals, and #2 overfertilizing.

[dra]

Not too tech savvy so a pix may be delayed. The brown spot/patch is located in the upper half ( more in the middle) of the leaf and extends lengthwise. There are a few brown tips on the same plant. Other plants are okay. But all three have occasional small brown spots. If overfertilizing is one cause, do I just water more to leach the excess fertilizer or just wait and water as usual? Could it possibly be a virus or fungus?

[digitalgate]

i think i know what he/she is referring to. It is quite common in cymbidium. It came mainly from fungus.Through not dangerous, with ample sunlight you just out grow them. Of course
dont spray the leaf when you water the plant. Sometime brown spot can come because of
virus which you can;'t get rid of. So you live with brown spot as I have. Flower still bloom
with it. Just remember sterilize the cutting tools after you cut the leaves from this plant.

[Hummer344]

Since you just re-potted them in the spring, a little leaf browing, I think, would be expected. As long as the plant(s) in question are showing new growth then I would not worry. What caught my eye was the sun exposure time and watering. Usually the mid day sun is to hot & this may be the cause for leaf browing. For cyms, plenty of morning sun is good, then afternoon filtered sun. Watering every other day, IMHO, is to much. I water mine every 5-7 days during the growing season depending on the temps. Our general summer temps are in the low 80's with an afternoon breeze. Heat wave temps are in the high 90's to low 100's. Over watering can lead to rot root.

Hope this has been helpful

[dra]

hummer, definitely overwatering is possible. I have increased the watering since i repotted a month ago. Will hold off. Also will mark the spot to see if it is growing. The patch has been there awhile ( more than a couple of weeks). Correct me if I am wrong but If it is a virus/fungus, sholdn't the leaf eventually die and fall off?

[digitalgate]

Originally Posted by dra

hummer, definitely overwatering is possible. I have increased the watering since i repotted a month ago. Will hold off. Also will mark the spot to see if it is growing. The patch has been there awhile ( more than a couple of weeks). Correct me if I am wrong but If it is a virus/fungus, sholdn't the leaf eventually die and fall off?

just might bloom with it too.So i live with it.

[Hummer344]

Leafs grow, leafs die. Its part of a cycle. The tricky part is trying to determin if the leaf dying is from disease or just natural. I, for one, don't worry about loosing a few leafs here and there. Especially after re-potting. I re-potted all my cyms (20) this past spring. If I worried about the leafs that died since that time I would have turned into a worry wort. LOL. BUTTTTTT, I looked out this morning and I saw my summer blooming cym had opened its first flower. Have two more spiking. YAAAAAAHOOOOOOOO

[PhalPal]

Watering greatly depends on where you live. I water mine nearly every day in summer and I have roots crawling out of the pot. Using the skewer method will help you learn what your cym needs in your climate.