Fertilome Natural Guard Horticultural Oil RTS

Fertilome Natural Guard Horticultural Oil RTS

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Product Overview

Fertilome Natural Guard Horticultural Oil RTS is a natural insecticide that targets and controls a wide range of insect pests. it is ideal for organic gardening since it can be used on fruits, vegetables, roses, trees, houseplants, and flowers. It kills pests like mites, aphids, scales, mealybugs, adelgids, whiteflies, immature plant bugs, leafhoppers, psyllids, whiteflies, and sawfly larvae at any life stage, including eggs.  This horticultural oil comes in a ready-to-spray formula that can be applied as a dormant and growing season insect spray. 

Features and Specs

Active Ingredient Canola Oil - 96%
Target pests Adelgids, Aphids, Mites, Leafhoppers, Mealybugs, Scale, Phylloxera, Psyllids, Immature plant bugs, Sawfly larvae, Whitefly, Powdery Mildew.
For use in Roses, Flowers, Fruits, Vegetables, Houseplants, and Trees.
Application Thoroughly wet all parts of the pests and plants. Repeat treatment in 1 - 2 weeks if needed.
Pet safe Yes, if used as directed on the label.
Formulation Liquid Formula.
Coverage Area A quart can cover 1,296 square feet and make 12 gallons of spray.
Special Features Kills all stages of insects, including eggs.
Shipping Weight 2.18 lbs
Manufacturer VPG (Mfg. Number: 40467)
EPA Registration 67702-4-7401



To protect the environment, do not allow pesticide to enter or run off into storm drains, drainage ditches, gutters or surface waters. Applying this product in calm weather when rain is not predicted for the next 24 hours will help to ensure that wind or rain does not blow or wash pesticide off the treatment area. Rinsing application equipment over the treated area will help avoid runoff to water bodies or drainage systems.


It is a violation of Federal law to use this product in a manner inconsistent with its labeling.

Please read entire label. Use only as directed. Shake well before each use. Thoroughly wet all parts of the pests and plants. Repeat treatment in 1 - 2 weeks if needed.


Thoroughly spray insect pests until plants are wet. Repeat treatment in 1-2 weeks if needed. This container will cover 1,296 square feet and make 12 gallons of spray.


  1. Shake well before use.
  2. Securely Connect sprayer to garden hose.
  3. Be sure that ON/OFF Switch is in OFF position, toward hose end of sprayer.
  4. Turn on water at faucet.
  5. For first time use, remove plastic shipping lock from beneath switch.


  1. Extend hose to farthest area to be treated, point sprayer nozzle in direction to be sprayed.
  2. Begin spraying - Push ON/OFF Switch forward into ON position.
  3. Walk at a steady pace while spraying, using an even sweeping motion, and slightly overlap treated areas. Work back toward faucet to avoid walking over wet, treated area.


  1. To stop spraying, push ON/OFF Switch to OFF position.
  2. Turn off water at faucet.
  3. Relieve water pressure in hose by turning ON/OFF Switch back to ON position until water slows to a drip, then return ON/OFF switch to OFF position.
  4. Disconnect sprayer from hose.


  • Adelgids
  • Aphids
  • Mites
  • Leafhoppers
  • Mealybugs
  • Scale
  • Phylloxera
  • Psyllids
  • Immature plant bugs
  • Sawfly larvae
  • Whitefly
  • Powdery Mildew

For use on:


  • Beans
  • Cabbage
  • Corn
  • Curcurbits
  • Melons
  • Peas
  • Potatoes
  • Soybeans
  • Tomatoes


  • Apples
  • Cherries
  • Citrus
  • Figs
  • Grapes
  • Pears
  • Nuts
  • Raspberries
  • Strawberries


  • Birch
  • Evergreens
  • Holly
  • Oak


  • Flowering
  • Foliage and Bedding Plants

For control of powdery mildew on fruits, vegetables, roses, shrubs and ornamentals: Thoroughly apply to both upper and lower leaf surfaces. Continue every 7- 14 days as needed until disease is eliminated.

Controls egg stages of pests present in dormant season and scale insects, mites and mealybugs on dormant shrubs (such as roses), evergreens, woody plants, fruit trees and shade trees. For dormant use apply a 2% formulation, mix 4 teaspoons of concentrate with 1 quart water (or 2 fluid ounces concentrate with 3 quarts water). Thoroughly wet the dormant plants or trees.

Oil removes the glaucous (blue) bloom from such evergreens as Colorado blue spruce and Koster spruce. Use caution on blooms and buds and on oil sensitive plants such as:

Chamaecyparis, Cryptomeria, Japanese Holly, Red Cedar and Smoke Tree. If concerned about sensitivity of plants, test spray a portion of the plant and wait several days to determine if burn occurs before spraying larger areas.

Do not combine with sulfur and do not follow a previous application of sulfur or apply sulfur following an application of this material until sufficient time has elapsed for safety (at least 30 days).

When used in combination with or immediately before or after spraying, this product may increase the phytotoxicity of dinitro compounds, or fungicides such as Captan, Folpet, Karathene and Morestan, or copper compounds. If in doubt, treat a small area with a combination spray and wait several days to determine if burn occurs.

Do not use Natural Guard Brand by ferti-lome Horticultural Oil Ready To Spray when temperatures are above 90 degrees F. When temperatures drop below 32 degrees F during the night, do not spray tree and vine crops until daytime temperatures have warmed to a point above 35 degrees F and crops are free from moisture due to melting frost or heavy dews.

Use of the Natural Guard Brand by ferti-lome Horticultural Oil Ready To Spray on citrus after October 1 is capable of increasing the tree’s susceptibility to cold damage.

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Questions & Answers

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Can Fertilome Natural Guard Horticultural Oil RTS be used while a plant is just starting to bloom?

Satsuma and meyer lemon are in bloom stage now.


The product label states Fertilome Natural Guard Horticultural Oil RTS is a dormant and growing season insect spray, so the product should be safe to be applied when lemons are in bloom. Keep in mind that this is an oil, so it could kill pollinators such as bees if you spray them with the product. For this reason, we recommend being careful when treating around blooming plants.

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