Using bleach to kill bacterial or fungal Infection

[Ray]

Hah! Should have ordered the Southern Ag stuff from me - $17 for 8 oz.

Yes, it's fine for paphs and oncids. I think "thin leaved" is referring to stuff like lycase or coelogyne.

[SouthPark]

Originally Posted by realoldbeachbum

Ray - Just ordered Physan 27 from Amazon. Yes, expensive - $42.00 for 2 oz! Oh well.

Question: About using it on thin-leaved plants: Do you think it would be OK to use it on Paphs and Oncids? If not, what do you suggest for them? Thanks so much, ROBB.

ROBB ----- over here, we haven't got PhyTON 27. But I can get something called Yates liquid copper (for plants).

When a rust-coloured leaf rot (soft-rot) on a Paph. vietnamense (after a spidermite attack occurred) started setting in after I had stopped spidermites, fungus or something then might have got inside the leaves - the copper stopped the rot in its tracks. The abrupt halt of the rot was just remarkable. Before the copper, I was trying other systematics - which didn't stop those particular organisms.

ROBB - just forgot to mention as well that the product Ray is meaning is 'phyTON 27' ------- it's not physan 20 and not physan 27 (as physan is an antiseptic). You most likely ordered the right product though .... Phyton 27.

In this thread (Click Here) - Ray added some nice information about Phyton 27.

[dianecty]

Last night, I took a cotton pad, sprayed it with water, then sprayed it with bleach and put it on the brown spot. This morning, I resprayed it. When came back from work, I was dismayed to discover the brown spots spread and finally connected to each other! And so, I panicked and just cut that part out of the leaf and applied cinnamon to the cut part of the leaf. Maybe I should have dunked it in bleach for an hour or something but I got scared.

Now I am wondering if the cut parts of the leaf will regrow?

[Roberta]

Cut part of the leaf won't regrow, but the plant will survive fine. If you had dunked in bleach for an hour, the odds are that you would have killed the whole plant, so glad you didn't do that! If you have a systemic fungal problem, you need to use a systemic fungicide. The bleach treatment may have been the cause of the bad part spreading (damaging tissue)... it certainly didn't help.

Suggestion for the future... post photos so that others can see what you are seeing. That will help in the diagnosis - and you need a diagnosis to do the correct treatment. (Post photos and get advice before doing anything drastic)

[Ray]

Diane, you’re dealing with a systemic infection - inside the plant. No topical (external) treatment will help.

[realoldbeachbum]

Thanks SouthPark. I just checked my Amazon order and I DID get the correct thing: PhyTON 27. Whewww.

Ray - I would have bought the Ag product from you, but I didn't know you sold it. When I finish with these 2 ozs of $$ PhyTON, I will place an order with you. Thanks so much.

[SouthPark]

Most welcome ROBB. Excellent to hear you could acquire it from amazon - ultra convenient.

Wow! Ray's price is really good.

At least if you ever use up your amount, then we know who to get from!!!

[dianecty]

Last night, I saw another leaf disease. Can you tell me what this is and what I should do to cure it?

Don't know why this is happening to my plants. This plant was happy before this. It was located in a different table, maybe 15 ft away from the diseased cattleya.

[Roberta]

Dendrobiums tend to normally shed some leaves in winter but it's early for that. Still, the plant looks fine... and flowers come from leafless canes in the spring, so don't cut anything that isn't dead and crunchy on these.

If this occurred in a short time, did you have an abrupt change in the environment? Heat or cold? As the seasons change, the sun angle changes and so plants can get a sudden blast of sun - which can burn leaves in seconds. And the damage on those lower leaves does look a lot like sunburn.

[dianecty]

So it is not a bacteria or fungus? Why does the leaf turn yellow except for certain bordered parts that stay green? Now I discovered my other plants have this same problem! I just sprayed them all with Daconil! Come to think of it, they are all dendrobiums.