I always stock at least one fungicide for general garden/greenhouse use, and my first choice is always Banner Maxx (propiconazole). It isn't cheap, but it allows me to treat several hundred roses for an entire season, plus whatever other plants might need it as well.
Now, this isn't listed for use on CPs, so I approached the matter as a bit of an experiment, knowing fully well that there was potential to damage my plants. First, I tested it on a Nepenthes I had just bought that showed quite a bit of rust spotting. (I'm told some kinds of spots are fungal, but not every spot you see is fungus, so be judicious.) I applied the fungicide at normal dilution rate and it had no harmful effects whatsoever. And, the spots did not develop on the new foliage. (circumstantial evidence: may or may not be attributed to the fungicide)
Next, I tested it on a Cephalotus that had developed powdery Mildew in the terrarium. (I have since abandoned terrarium growing for this genus; they do FAR better out in the Nepenthes house) Again, I applied the fungicide at normal recommended dilution and it cleared up the Mildew without any harm to the plant.
So, I can attest to the efficacy and non--phytotoxicity of propiconazole when used on these two genera. The active ingredient, propiconazole, is found in other brands and formulas in most garden centers, at much lower prices than Banner Maxx, so do your research thoroughly. It is often sold specifically as a fungicide for Rose diseases. Unless you are willing to experiment, you may want to avoid products that contain additional chemicals, aside from the key ingredient. Oh, one thing to bear in mind: fungicides are best applied when the atmospheric temperature is below 80F, as it is a known fact that phytotoxicity can occur if applied at higher temps. 85F might still be OK, but best to avoid anything over 80, if possible.
Paul, thanks for sharing the result of your testing Banner Maxx on Neps. Sounds like it works for cercospora. We've been using Cleary 3336 at recommended strength, but would like to rotate fungicides.
You're welcome (Trent? Michelle?) ;-) Banner Maxx www.amazon.com/Banner-Maxx-Fungicide-1-Pint/dp/B004W4P7QW is a broad spectrum fungicide as far as I know, and it has stopped any fungal infection I have ever thrown at it. And yes, rotation is a good idea. I know most people use Clearys, but I haven't tried it yet, because I understand it leaves a lot of unsightly residue on the foliage, is that right?
I use Bonide Rose RX systemic drench. Its a fungicide and insecticide. I've used it on almost every plant I own even the sensitive plants like dews and VFTs. So far, there are definitely no negative effects.
Paul and Everyone, We use the Clearys as a soil drench for Neps because it is systemic, and it does work. Would like to rotate it with others, though. Banner Maxx and now Bonide Rose RX sound like good alternatives. Thanks for the "tested" suggestion, Dionea! Good exchange of info, folks!
Paul and Everyone, We use the Clearys as a soil drench for Neps because it is systemic, and it does work. M&T
Good information, thank you! It is important to share factual information about these products based on personal experience, not anecdote, and so avoid getting into too much trouble by relying on "iffy" information!
No problem Sunbelle. I started off testing it on my sarracenia because I had scale on a couple of plants. After about a week with no negative results I started testing it on other plants and eventually used it on nepenthes, sarracenia, VFTs and sundews, mostly as a preventative measure. This was a lil over a month ago.
The only problem is you have to use a 120 ml in a gal of water so the big bottle it comes in goes fast.
I recently used Physan, as recommended in the Savage Garden. Perhaps, not the best choice. It basically destroyed my Drosera's flowers, many of which were still in the process of setting seed, and the leaves lost (and seem unlikely to regain) their dew. Pings look a big weathered now, as well. The only things unaffected were Sarrs, VFTs (except their flowers also died) (IDK why one decided to flower in winter), and the Neps seem okay. Didn't test on Utrics. Wouldn't really recommend it.
plantguyty1: I'm looking for pollen.
Dec 31, 2016 23:50:46 GMT 7
fredp: I'm trying to add a PDF file to a new thread but it doesn't seem to work thru the "Add Attachment" button. Can someone help?
Jan 8, 2017 0:08:27 GMT 7
plantguyty1: Does anybody need pollen? I have N. Miranda it's the first time it flowered for me so I do not know if its sterile or a good candidate. Is there anybody with an active female that would like to give my pollen a shot?
Feb 19, 2017 1:19:37 GMT 7
siravi: im looking for seeds, anyone?
Mar 15, 2017 13:41:04 GMT 7
samu0945: I'm looking for N. Aristolochioides
Apr 2, 2017 8:48:30 GMT 7
thatoneplantboi: Hey guys, I'm new to growing nepenthes, I'm getting a mini indoor greenhouse to grow them in. What kind of light should I use for them? Also, if you could provide a link to a product, it would be very much appreciated
Oct 5, 2017 10:16:29 GMT 7
borneo: Yes, they work superbly. But you don't need expensive lights, cheap ones work well too.
Sept 2, 2018 14:34:57 GMT 7
mylesg: i havent checked in here for a while, why does it seem all the CP forums have lost their once strong activity? the trade/sale section used to be so active and now its a ghost town. where is everybody hanging out these days for a strong online CP community?
Dec 9, 2018 3:15:01 GMT 7
mylesg: Happy holidays to everyone out there!
Dec 26, 2018 0:23:13 GMT 7
lance: Everyone left the forums and moved to facebook groups.
Oct 2, 2019 12:09:05 GMT 7
mylesg: yes, facebook groups will never have same feel as this place once did
Nov 3, 2019 8:34:22 GMT 7
etiennecancio: perhaps we can try to revitalize the old forums? i always found them to be much more convenient than facebook groups at least hah
Nov 4, 2019 17:01:25 GMT 7
mylesg: i refuse to abandon this place, i am posting in my grow thread with many photos and always there to answer any questions just built new grow room and tons of pitcher shots!
Nov 6, 2019 21:17:59 GMT 7