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ladybug9a

Questions about spraying

Blackspot was my biggest problem, or so I thought. This summer, chilli thrips have destroyed my new baby roses. Some i lost, probably a combination of a few factors. I am seriously considering helping them a bit until they are more established.
I dont have any experience with spraying, any pointers? A fungicide for BS on my smaller plants with some sort of insecticide for the thrips?
Are there varieties that are less susceptible to thrips? Would appreciate any pointers, I tried looking on Amazon for insecticides, but could not figure out what would be most effective without killing pretty much everything.

Comments (10)

  • 6 years ago

    And another question, I tried the sticky traps but geckos kept getting caught and it was really tough getting them out. Is there a brand that works better?

  • 6 years ago
    last modified: 6 years ago

    Sharon, thanks a lot for the info. Does just growing the peppers you mention attract the swirskii?

    Also on conserve, I see it sold on amazon (sticker shock!!), but also some see some products that have conserve?


    Also interested to see any varieties are more "resistant "

  • 6 years ago

    Here is a link that also has a list of products that the university of Florida has tried on the CT's https://mrec.ifas.ufl.edu/lso/thripslinks.htm

    ladybug A 9a Houston area thanked sharon2079
  • 6 years ago

    Thanks Sharon, very helpful. I guess where I'm getting tripped up is that you can buy conserve or a spray that lists conserve s an ingredient for much less, but not clear on what effective concentrations are.


    Would be great if I can find a few varieties hat are BS resistant, not harmed much by thrips and fragrant!! Most of mine were damaged by chilli thrips this year.

  • 6 years ago

    Bargain Hunt has Spinosa. High concentration for a fantastic price if you have one nearby.

    ladybug A 9a Houston area thanked Vaporvac Z6-OhioRiverValley
  • 6 years ago

    Vapor, no stores in TX :((((((

  • 6 years ago

    Rekha, I am sorry that you are still having issues with your roses. i used Conserve but i was told not to use one single spray program. You might want to think about adding Bayer Complete Insect Killer to your program as well. With normal thrips, one usually sprays when you see a problem. But with Chilli Thrips, you need to be more proactive as they can kill the entire plant. I add one or the other of two insecticides to my regular fungicide spray mixture at least every 2 weeks and sometimes weekly depending on the level of activity i see. I spray proactively for this pest.


    Now for the spotted leaves. about the fungus you are going to have a problem with this time of the year is black spot . You can usually control that well with a combination of fungicides. I am using tebuconazole which is in the BioAdvanced product. I would add mancozeb to the mix. Spray regularly with propiconazole [ similar to tebuconzole ] plus the mancozeb and that works well. so far i have used one but have not mix or change the spray program.


    There is another type of possibility if you think it is Black spot but it is another called Xanthomonas infection [ a bacteria and not a fungus]. People usually suspect that when [2] chemical combination for black spot does not work. For this problem you need to spray regularly with copper based product called CuPro is mostly used.


    the best thing to do is to go to a rose society and bring samples of the leaves and show it to a Consulting Rosarian or you can asked them who is a master Rosarian.

    You get more information better bec i have to do above and i got all the information. I have one rose bush that is highly infected with Thrips and fungal but not BS. I almost lost it but it turn around and i keep cutting off buds and i got lucky bec it is in a pot so i basically isolated it completely so my other roses will not get infected . it is the only rose i spray now. since it got cooler it is looking better. Sometimes i wonder if i need to strip it naked and have all new leaves growing ?


    jin



    ladybug A 9a Houston area thanked Plumeria Girl (Florida ,9b)
  • 6 years ago
    last modified: 6 years ago

    Rekha, I have had the same experience with sticky traps. I actually tore the foot off a poor anole that was stuck to one some years ago, and there was another small one which I could not get free from the sticky trap. I immediately took down the traps and have never used them again.

    Some years ago Dr. Manners told of several roses which he found to be tolerant of chili thrips. Here is his quote:

    "There appear to be a few roses that at least tolerate them, if not being actually resistant -- 'Mrs. B. R. Cant', 'Trinity', 'Smith's Parish' 'Tausentschoen'. Probably lots of others. Unfortunately, some of the most otherwise carefree roses (Belinda's Dream, all of the Knock-Out series, Don Juan) are unusually susceptible."

    You can read this old thread from 2012 here:

    Dr. Manners and others please talk to me about chilli thrips

    ladybug A 9a Houston area thanked plantloverkat north Houston - 9a