Howdy Gardening Enthusiasts!
If any of you have either been longtime subscribers to this email service, or if youíve listened consistently to the radio program on the weekends, you may have noticed how the ďcontrolĒ time for Brownpatch has really crept earlier and earlier into the schedule. This year seems to be no different as Brownpatch questions are already creeping in on email and on the air. Translation: ITíS NOT TOO EARLY TO BE THINKING OF BROWNPATCH CONTROL.
In the past, we noted that September first was always the time to start thinking of preventative control. Then, in the past few years, people were noting how they seemed to be getting tell-tale signs in Augusts. So, we didnít hesitate to advise getting some control measures down then. And thanks to the goofy weather year of 2004, Iím already seeing signs of it in my neighborhood. So, even though itís the last weekend of July, if you are seeing any (and I mean any) signs of Brownpatch, please donít hesitate to start some control measures.
Hereís the key to success: If you put down a granular ďpreventative controlĒ now, you still have to do it every thirty days until the low temperatures at night dip below 60 degrees. That means it may be 3-4 months of applications, and that can get expensive for some folks.
Hereís a list of those granular preventatives that seem to work best on the Gulf Coast
Myclobutanil - Ex: Fertilome F-Stop; GreenLight Fung-Away
Terrachlor (or PCNB) -- Ex: Hi Yield Terrachlor Gran.; Nitro Phos Fungicide w/PCNB
Once you have spots developing, not only do you have to put out the preventative for everywhere else, but specifically on the spots you need to put a liquid fungicide of almost any kind. Hereís a short of list of possible options.
Chlorothalonil - Ex: Any Daconil
Banner-Based - Ex: Fertilome Liquid Systemic; Bonide Infuse; Banner-Maxx
As a reminder (although the dates talk about August/September), hereís a link to our original tip sheet about Brownpatch control.
Lastly, just remember that the fungal pathogen that causes Brownpatch loves the combination of 1. A recent fertilization 2. Excessive Moisture 3. Cooler night time temperatures and lastly 4. HUMIDITY! Sometimes, that means in Houston, itís almost inevitable.
Until next issue, here's to
Great Gardening from the GardenLine, heard
exclusively weekend mornings from 8 to noon
on Talkradio 950 KPRC.
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