What Is A Pyrethrum Spray And How To Use It On Plants?


Ever heard of a pyrethrum spray?

A natural pyrethrum bug spray comes from the dried blossoms of white daisies, Tanacetum cinerariifolium. The insecticidal activity of this potent organic compound targets an insect’s nervous system, paralyzing (on contact), thus leading to its death.

Pyrethrum Sprays are an established commonly used natural pesticide and considered one of the best and safest "organic insecticide sprays" Pyrethrum Sprays are an established commonly used natural pesticide and considered one of the best and safest "organic insecticide sprays"

The Pyrethrin spray – An established commonly used natural pesticide like organic neem or insect repellent and considered one of the best and safest “organic insecticidal sprays” permitted under National Organic Standards rules.

Pyrethrum (“pie-wreath-rum”) combined with Piperonyl Butoxide (PBO) find themselves broadly utilized in insect control sprays. [source]

Around 200 years ago in Central Asia, individuals found that dried, pulverized blossoms of specific chrysanthemum flowers worked as a bug poison. Amid the Napoleonic Wars (1804-1815), this ‘bug powder’ controlled bug and body lice infestations, by French warriors.

Today, many practicing organic gardening prefer to use a pyrethrin spray over synthetic pesticides as they only affect insects (works by shutting down their nerve cells) and doesn’t affect humans or mammals.

Aside from this, the active compounds break down (due to sunlight exposure) within a matter of days, making it and environmentally safe alternative for use on vegetables, fruits, and even your flowers.

Advantages of Using Pyrethrum Sprays

Efficient Insect Killer And Repellant

As mentioned above a Pyrethrum spray concentrate contains a highly toxic compound. When used in low concentrations for insect control, the spray helps repel insects from your garden, while high levels eliminate most of these insects altogether. It can be used as a flea and tick spray, insect spray or a wasp hornet killer.

Biodegradable Pest Control

Most of the active ingredients found in pyrethrum spray breaks down after a few days. Research shows that this botanical insecticide breaks down much faster when exposed to UV (sun rays) rays.

Spot Spraying

Spot spraying proves very effective for heavily infested plants. Apply sprays to the “hot spots” directly to the insect’s body.

However, use pyrethrin sprays for pest control in organic gardening with care and consideration. Consider all other options first, use them as a last resort. Natural pyrethrin are very dangerous to honeybees, wasps, and other gainful bugs, as well as to fish.

Related Reading: How To Get Rid Of A Wasps Nest Naturally

What Pests Does Pyrethrum Sprays Control?

Pyrethrum frequently helps:

How To Use A Pyrethrum Pesticide On Plants

Like all insecticides, when applying them applicators should take caution. Outlined below you’ll find a few recommended ways to use pyrethrum on plants.

Spray Early In The Morning

If spraying to control flight insects, apply a pyrethrum botanical insecticide very early in the morning before the sun comes up. Using a hand sprayer, and wearing a respirator or self-contained breathing apparatus apply pyrethrin insecticide directly on the infested plants without disturbing them. This allows maximum exposure and efficiency for controlling these pests.

Consider covering treated plants with an old sheet or row cover to protect honeybees, lady beetles, and other beneficial insects. Covering the plants for at least 24 hours gives enough time to ensure a thorough kill on the target insects.

Spot Spraying

Spraying in those “hot spots” proves very efficient for controlling nymphs especially when crowded together. Spot applications are recommended for vegetable and fruit crops affected by whiteflies and other insects that attack in groups.

Use In Liquid Form

Although commonly available in dust form many advise using this organic pyrethrin concentrate, in a liquid form. Mix pyrethrum powders with either soapy water or oil (as recommended by the manufacturer).

However, liquid form is considerably more efficient over in powdered form. You also get to protect various pollinators (such as bees and colorful, fluttering butterflies) from pyrethrin when using it in liquid form.

Pyrethrum products come packaged and ready to use, simply follow the manufacturer’s directions, to control these pests fast and efficiently. Many pesticides and pest control products on the market today, including synthetic ones, contain pyrethrin in them.

Organic pyrethrum products may, however, contain soaps or oils which help enhance their effectiveness in controlling pests.

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