an industrial safety & marine products distribution company
an industrial safety & marine products distribution company
Pyrethrum Spray, Organic Pest Control
pyrethrum is also the strongest insecticide allowed under National Organic Standards guidelines. Made from the dried flowers of a little white daisy now classified as Tanacetum cinerariifolium, pyrethrum insecticides are known for their fast knock-down of unwanted insects. Insects typically become paralyzed as soon as they come into contact with pyrethrum, so it’s often used in wasp sprays. Pyrethrum use in the garden should be undertaken with care and only after cultural methods that might manage a pest have been exhausted. Pyrethrum insecticides are highly toxic to bees, wasps, and other beneficial insects, as well as to fish.
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How to Use Pyrethrum
Pyrethrum degrades quickly in sunlight, but precautions still should be taken to protect beneficial insects from exposure. When using pyrethrum to control insects that take flight, such as cucumber beetles, apply pyrethrum early in the morning and then cover the treated plants with a row cover or an old sheet to exclude bees and other benefits for 24 hours. To put a damper on squash bug populations, spray plants as soon as the first nymphs are seen, and again one week later.
NOTE: Do not use pyrethrum in situations where lady beetles, honeybees and other beneficials are active. Used carelessly, pyrethrum can wipe out these and other beneficial insects.
How to Store Pyrethrum
Mix only as much concentrate or infusion as you will need. If not used within one day, place the container in the sun for a few hours and dispose of the unused solution by pouring it out in the sun. Sunlight rapidly degrades pyrethrum, and the half-life of pyrethrum in soil is only one to two hours. Store pyrethrum products in their original containers on a high shelf, out of the reach of children and pets, in a dark place at cool room temperatures. Under good storage conditions, the shelf life of pyrethrum is about 1 year. Dried pyrethrum daisies can be stored in the freezer in an airtight container for at least six months
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pyrethrum is also the strongest insecticide allowed under National Organic Standards guidelines. Made from the dried flowers of a little white daisy now classified as Tanacetum cinerariifolium, pyrethrum insecticides are known for their fast knock-down of unwanted insects. Insects typically become paralyzed as soon as they come into contact with pyrethrum, so it’s often used in wasp sprays. Pyrethrum use in the garden should be undertaken with care and only after cultural methods that might manage a pest have been exhausted. Pyrethrum insecticides are highly toxic to bees, wasps, and other beneficial insects, as well as to fish.