Appeared overnight!!!!!!

[Paul Mc]

I know I've seen this before, but I can't place it. Please help!

Background: it rained all day yesterday and my Vanda luzonica was left in the elements through it all. I woke up and the temps were in the 60's F. I did not see any hail this time, but a few days ago when severe storms passed through there was hail, hence the other white spots you see.

Today: I went to water my Vandas and found this on this particular one, and no others!


What do you think this is?

[Paul Mc]

BTW, I guess I should state I'm concerned about the black areas with a yellow circle around them. Sorry.

[Greenthumb.5]

It looks like a bacterial infection probably inflicted by a insect because the halo/yellow rings are results of the plant itself fighting or containg infection of the cells. the black spots are dead cells that had closed themselves off from any resources but can't be so sure but is definitely a bacterial infection of some sort. The plant can either recover on its own or with help from a grower or ultimately get invaded by the bacteria and die from its demise. But looks too early for any results.

[Paul Mc]

Interesting. My first thought was insect caused bacteria, but my secondary thought was opportunistic bacteria based upon the hail storms few days ago, a full day and ought of rain followed by lower than normal nighttime temperatures.

What can I do to assist it in the healing process? I thought about using cinnamon powder on it, but have never dealt with this issue before so didn't know.

[Greenthumb.5]

I would suggest to leave it but if it spreads to near the half of the whole length total. I would cut it off and put some bactericide or cinnamon. The marks reminds me of slug/snail damage especially after storms. But I am glad to help you slightly but bacteria can't really fly in air because rain will wash it off before it can reproduce but anything is possible.

[Leafmite]

With all the crazy weather we've had, some of my plants don't look too great either.

[Island Girl]

^ We've been having crazy weather too! (All over NC, at home, in Salisbury (piedmont area, near Charlotte), & here at the beach! ) Paul, I hope your Vanda gets better! (I thought bacterial infection too... But wouldn't have had as good of an explanation as Greenthumb.5! )

[Bud]

cold water droplets and the sun made those dark spots that allowed fungi infestation (its not bacteria=it manifests on the roots and the crown then the leaves fall out one by one)....you need to use a sterilized sharp cutter to carve the holes on the leaves making sure that the yellow rings are gone....make a paste of cinnamon powder and water and dab the wounds....your luzonica is near blooming size....

[Paul Mc]

Thanks everyone.

As I figured, the black spots have spread out wards towards the yellow halo, but they have not gone out of it yet. Of course it's been raining now for almost 3 days off and on, so we will see.

I'm tempted to make a soap/water/cinnamon extract mix today and apply it by sponge to the areas and move the Vanda to a more sheltered location for a bit.

Also, I'm glad to hear you think this is almost blooming size Bud! This was my first Vanda, bought about 2-3 years ago as "near blooming size". In the past few years, it hasn't grown much other than produce a side keiki, has proven to not like as much light as my other Vandas and just generally more temperamental, lol... Was hoping to get some blooms from it sometime soon to make it all worthwhile, lol...


Paul McMahon
Sent from my iPad using Tapatalk HD

[Brooke]

Have you checked for slugs or small caterpillars? Your picture looks like the typical sucking marks either of those pest inflict on leaves.

Brooke