Rose Garden Pesticides

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Rose Garden Pesticides

• The Chemicals Available to Keep Your Roses
  Pest-Free

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Todays Topics

• Pesticide Hierarchy
• Systemic, Translaminar, and Contact Chemicals
• Identifying the Common Pests
• Insects
• Funguses
• The Available Insecticides and Fungicides
• Online Sources of Pesticide Labels
• Shopping the Internet for the Best Price
• A few words about Resistance Management

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Todays Topics (Cont.)

• Specific Chemicals for Specific Pests
• Insecticides/Miticides
• Fungicides
• Ready-to-Use (RTU) and Over-the-Counter (OTC)
  Products for the Smaller Garden
• Bayer Advanced Garden Products
• Others

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Pesticide Hierarchy
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Systemic Chemicals

• Apply to the foliage as a spray or to the roots
  as a drench
• Moves (typically, up) through the plants
  vascular system
• Phloem cells like arteries through which
  sugars and other plant products move
• Xylem tubular structure for the transport of
  water and dissolved minerals --think tree growth
  rings
• Chemicals stay within the plant dont wash off
• Downside systemics dont enter the blooms

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Translaminar Chemicals

• Trans across or through, like transatlantic
• Laminar layered
• Translaminar through layers
• Sometimes referred to as locally systemic
• Applied to foliage as a spray, these chemicals
  are absorbed by the plant
• They move through foliage from one surface to the
  other
• Great for spider mites which feed on the
  underside of leaves and are nearly unaffected by
  systemics

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Contact Sprays

• Applied to foliage, buds and blooms as a spray
• Remain on the surface of foliage and blooms
• Not absorbed by the plant
• Pretty much the only way to protect blooms
• Downside contact sprays wash off in the rain

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Identifying the Common Pests

• Insects
• Japanese Beetles May through August devour
  blooms and leaves
• Aphids entire growing season attack buds and
  tender foliage often accompanied by ants
  (farming the aphids)
• Thrips entire growing season create blemishes
  on blooms especially light colors
• Budworms later in the growing season bore
  holes in buds
• Spider Mites when its hot and dry suck the
  chlorophyll out of leaves defoliate bushes

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Identifying the Common Pests

• Funguses
• Black Spot all season especially when damp
  forms a black spot on leaves which then yellow
  and fall off
• Powdery Mildew all season superficial white
  or gray powder on surfaces of leaves
  uncontrolled will prevent blooming
• Downy Mildew cool with high humidity purplish
  red to dark brown irregular spots on leaves
  uncontrolled may result in defoliation long
  purplish areas on canes - may be systemic in
  roses
• Botrytis all season especially when damp
  creates blemishes on blooms, bloom rot and
  premature shattering
• Rust all season tiny orange and red spots on
  leaves looks like rust uncontrolled can
  defoliate bush

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The Available Insecticides and Fungicides

• Where to learn about them - other rosarians, ads
  in rose magazines and newsletters, rose forums on
  the Internet, and rose care websites like
• www.rosemania.com
• www.rosecare.com
• www.saveonchemicals.com
• www.growersupply.com
• www.southernag.com
• www.pestproducts.com
• And links from www.chattanoogarose.org

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Get the Labels

• And the Material Safety Data Sheets (MSDS)
• Sources of labels
• On the chemicals containers
• Manufacturers websites for example
  www.bayeradvanced.com
• www.cdms.net offers labels and MSDS for all
  registered pesticides search by product name
• www.greenbook.net another site like cdms.net
  however, requires simple registration

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Read the Labels!

• And the MSDSs
• Typical label format
• Product name, active ingredients and toxicity
  CAUTION, WARNING, or DANGER
• Safety information personal protection
  equipment (PPE), etc.
• Use restrictions and application instructions
• Applicable crops/plants pest/disease that is
  controlled application rates
• Storage and disposal requirements

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Shopping the Internet
MERIT 75 WP 2 OZ COMPASS 8 OZ AVID 8 OZ TETRASAN 1 LB
ROSEMANIA 65.00 219.00 (2 OZ 69.99) 105.00 99.95
ROSECARE 65.98 289.00 349.95 1 QUART
BT GROWER SUPPLY 225.00 93.00 89.60
PEST PODUCTS 59.90
SAVE ON CHEMICALS 142.00 6.4 OZ 203.00 269.00 1 QUART 79.00
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Resistance Management

• Resistance management in the garden is a problem
  akin to certain antibiotics losing their
  effectiveness in humans due to repeated or
  improper use
• Repeated use of the same pesticide allows the
  target pest to mutate and adapt and become
  resistant to the pesticide
• Each insecticide and fungicide has a specific
  mode of action (MOA) in the way it disables and
  kills its target pest
• If these MOAs are alternated from one spraying to
  the next the target pest is very less likely to
  adapt

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Resistance Management (Cont.)

• Or, if chemicals with different MOAs are mixed in
  a single spraying the target pest is unable to
  adapt
• The Insecticide Resistance Action Committee (IRAC
  www.irac-online.org) in its latest publication
  identifies 28 insecticide MOAs
• The Fungicide Resistance Action Committee (FRAC
  www.frac.info) has identified over 40 fungicide
  MOAs
• Dr. Ray Cloyd and I decided that the large number
  of MOAs should and could be consolidated to be of
  more use to rosarians we came up with 6
  insecticide MOAs and 6 fungicide MOAs

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Resistance Management (Cont.)

• Your handout contains the two tables that Dr.
  Cloyd and I derived from the IRAC and FRAC
  publications
• MOA 6 in both tables is what Dr. Cloyd calls the
  napalm MOA the chemicals in this group kill
  on contact and leave little or no room for
  adaptation
• Ive found two useful insecticide partnerings to
  be Merit and Tempo and Avid and TetraSan
• An effective fungicide partnering is Banner Maxx
  (alternated with Clearys 3336F) and Compass

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Perspective Setting

• Pesticide producers view rose growers as a tiny
  market
• Insecticides are primarily marketed to farmers
  and maintainers of large public areas
• Fungicides target turf grass markets like golf
  courses
• Were just lucky that these pesticides work to
  eliminate rose garden pests

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Specific Chemicals for Specific Pests

• Insecticides
• Orthene MOA 1 a translaminar chemical spray
  for the control of aphids, Japanese Beetles, and
  thrips
• Sevin MOA 1 a contact spray very effective
  against Japanese Beetles has resistance
  management problems with thrips if used alone
  combine with Tempo, Talstar or Conserve
• Talstar MOA 2 a contact spray also
  registered as a miticide good control of aphids
  and Japanese Beetles look also for Bifen I/T
  exactly the same as Talstar but less expensive
  (59.90 vs 99.99 per quart)

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More Pest-Killers

• Insecticides (Cont.)
• Tempo MOA 2 - a highly-effective contact spray
  kills just about any insect
• Avid MOA 3 a translaminar spray kills adult
  spider mites
• Floramite MOA 3 a contact spray kills all
  spider mite life stages
• Akari 5SC MOA 3 a contact spray kills all
  spider mite life stages 60 the cost of
  Floramite
• Merit - MOA 4 a very effective systemic
  chemical kills any insects that are eating the
  foliage use as a drench or spray

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And More

• Insecticides (Cont.)
• Conserve MOA 4 a translaminar spray
  probably the most effective attack on thrips
• Hexygon MOA 5 a contact spray for the control
  of spider mite larva and eggs combine with Avid
• TetraSan MOA 5 a translaminar spray for the
  control of spider mite larva and eggs combine
  with Avid for a translaminar spray addressing all
  mite life stages
• Forbid 4F MOA 6 a translaminar spray for the
  control of all spider mite life stages minimum
  resistance management problems very expensive

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Now Disease (Fungus) Control

• Fungicides
• Banner Maxx MOA 1 a systemic chemical that
  attacks blackspot, powdery mildew and rust
• Eagle 20 EW MOA 1 very similar to Banner Maxx
  but less toxic (CAUTION instead of WARNING)
  same active ingredient as Systhane
• Decree 50 WDG MOA 1 specifically registered
  as a botryticide
• Clearys 3336F MOA 2 a systemic chemical that
  can be alternated with Banner Maxx
• Chipco 26019 Flo MOA 3 specifically
  registered to control botrytis blight alternate
  with Decree

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More Disease Control

• Fungicides (Cont.)
• Subdue Maxx MOA 4 targets root and stem rot
  primarily used as a drench in greenhouses
• Compass MOA 5 a translaminar chemical that
  controls just about every rose disease, including
  botrytis, downy mildew, and powdery mildew
• Alliette MOA 6 an aluminum-based contact
  chemical that specifically targets downy mildew
• Manzate MOA 6 a zinc- and manganese-based
  contact spray for the very effective eradication
  of blackspot now sold as Pentathlon
• Zyban MOAs 2 and 6 a combination of the
  active ingredients in Clearys 3336F and Manzate
  comes as a fine powder

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RTU and OTC Products

• Bayer Advanced Garden Products
• www.bayeradvanced.com
• Rose Flower Insect Killer
• A combination of Merit and Tempo
• Available in spray bottle, hose-end sprayer and
  concentrate
• 2 in 1 Systemic Rose Flower Care
• Granules sprinkled around bush and watered-in
• 12-18-6 fertilizer
• Orthene-like systemic insecticide - disulfoton

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RTU and OTC Products (Cont.)

• More Bayer Advanced Garden Products
• All-in-One Rose Flower Care
• Merit insecticide plus Banner Maxx fungicide
• 9-14-9 fertilizer
• Mixed 4 tbsp/quart and used as a drench
• Bayer Advanced Disease Control
• Concentrate diluted 1.5 tbsp/gallon to spray
• Active ingredient same as Banner Maxx

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Some Other RTU/OTC Products

• Safer Brand 3 in 1 Garden Spray uses fatty
  acids, sulfur and neem oil (MOA 6) to create an
  environmentally safe insecticide, fungicide and
  miticide
• Green Light Bioganic Organic Rose Flower
  Ready-to-Use uses plant oils (MOA 6) to create
  an environmentally safe insecticide, fungicide
  and miticide
• Ortho Orthenex Insect Disease Control active
  ingredients are acephate (Orthene) and triforine
  (same chemical group as Banner Maxx)
• GardenTech Sevin OTC version of this very
  effective insecticide (MOA 1)

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And, FinallyAdjuvants

• Adjuvant serving to help or assist something
  to make a spray more effective
• Stirrup M a pheromone (sexual attractant) that
  draws spider mites to any spray in which its
  mixed
• Indicate 5 adjusts pH of spray water and serves
  as a spreader-sticker most sprays more
  effective in a slightly acidic liquid
• Hi-Yield Spreader-Sticker (or any other OTC
  brand) makes spray adhere to foliage instead of
  dribbling off