Grow\'Em Plant Propagation Database
Custom Search
main index
plants index

propagation techniques

growth media

growth enviroment

Seed - General
Chipping Seed
Soaking and Pricking
Pre-sprouting Seed
Stratifying Seed
Cuttings - General
Stem Cuttings
Heel Cuttings
Root Cuttings
Leaf Cuttings
Rooting Hormone
Rooting with Vitamin B1
Rooting with Willow Extract
Dividing Plants
Dividing Orchid Pseudobulbs
Simple Layering
Air Layering
Tip or Trench Layering
Serpentine Layering
Bulbs - General
Bulb Chipping
Bulb Scaling
Twin Scaling
Grafting - General
Cleft or Wedge Grafting
Bud Grafting
Whip Grafting
Side-veneer Grafting
Plants of Home and Garden
Trees and Shrubs
Fruits and Vegetables
Grains and Grasses
Cacti and Succulents
Water Plants
Growth Media
Sphagnum and Peat Moss
Manure, Nitrogen, Potassium
Making Compost
Constructing a Compost Bin
Indoor & Vermicomposting
Compost Tea
Composting Problems
Foliar Feeding
Green Manures
Bone Meal & Other Additives
Manure, Nitrogen, Potassium
Containers and Enclosures
Pots & Potted Plants
Biodegradable Pots
Raised Beds
Cold Frames
Water and Irrigation
Artificial Light
HID Lighting
Aquarium Lighting
On Photosynthesis
Synthetic Mulch
Floating Row Covers
Favorite Gardening Sites
General Information
Specific Interests
Seeds and Seed Catalogs
Gardening Tools
Garden Design
header, pests and organic pest control

image gallery

header, plant of the week

Organic Pest Control
plant hardiness zone maps

plant of the week
image gallery



Like neem oil and pyrethrins, rotenone is plant-derived insecticide. Like pyrethrins, rotenone is highly toxic to insects and fish. Unlike pyrethrins, it is also moderately toxic to birds and mammals including humans. Because pure rotenone is organic, it can be used on organically-grown fruits and vegetables, but that does not imply safety. It is simply natural, non-synthetic. In large doses, it is toxic, even fatal; some human deaths have followed deliberate ingestion of large amounts. Rotenone also causes Parkinson's disease in rats; it may increase the Parkinson's risk in humans.

Beware also that rotenone preparations may be mixed with synthetic and more toxic pesticides. Read the label; let the buyer beware.

Rotenone is effective against virtually all insect pests, but is also toxic to beneficial insects. Specific target pests include aphids, borers, cabbage worms, caterpillars, codling moths, flea beetles, Japanese beetles, leafhoppers, Mexican bean beetles, sawflies, stinkbugs, thrips and weevils, and many others.

Rotenone breaks down rapidly when exposed to sunlight, and in the garden degrades almost completely within a week. Note that it lasts much longer in water - up to half a year - and that is extremely toxic to fish. Take care to contaminate streams, ponds, or other bodies of water.

As with all pesticides, rotenone should not be used indiscriminately. It should not be used if not needed, and not within several weeks of harvesting. Beware that commercial forms may also contain synthetics pesticides, which are often considerably more toxic to humans and other mammals.

Apply in early evening, as per manufacturer's directions, and use adequate protection.

See Also

Aphidius wasps
Corn borers
Flea beetles
Organic insecticides

Related Topics

Fruits and Vegetables

Don't see what you're looking for? Try our Search function.