Showing posts with label pyrethrins. Show all posts
Showing posts with label pyrethrins. Show all posts

Tuesday, November 23, 2021

The World-Wide Obsession with November’s Flower

A blonde haired woman in a white shirt carrying a bunch of huge pink chrysanthemums over her shoulder.
Chrysanthemum is November’s birth flower and those lucky November-born couldn’t have a more
exquisite or meaningful bloom associated with their month. The chrysanthemum comes in hundreds of varieties and each one is competing with the others to be the most beautiful bloom (see some stunning pictures here and here.) Unlike most other flowers, mums bloom in the chilly weather of autumn. This late-season blooming habit makes them the most obvious and popular choice for holiday bouquets, but for many people it has also made mums a symbol of vitality and perseverance. Mums have inspired symbolism across time and place. In Victorian times, they were symbols of well-wishing and friendship, in Australia they are the flowers of Mother’s Day (because they’re called “mums”, get it?), and in many European countries they have come to be symbols of death (which comes from their being used so frequently in funerals and graveyards). The meanings of chrysanthemums seem to be as wide-ranging as their varieties.

The Emperor of China mum - a beautiful pink, white and red variety.
A 4 Gentleman type painting with yellow chrysanthemums on the far rightIn China the mum is venerated as a whole –their symbolism, their beauty, their medicinal qualities, their spiritual potential, and even their flavor. To underscore this devotion, look no further than this ancient Chinese saying: “If you would be happy for a lifetime, grow chrysanthemums”. As far back as 3,000 years ago Chinese people have been planting, painting and writing about the Chrysanthemum. It is one of the Four Gentlemen of traditional Chinese art. These four plants are the plum blossom, orchid, bamboo and chrysanthemum. They each represent a season (plum blossom-winter, orchid-spring, bamboo-summer and mums-autumn) and also embody the highest levels of integrity and moral character. Although these ideals/images became part of the culture in the time of Confucius (551-479 BCE), they have remained an element of Chinese thought even through communism. Chrysanthemums are now a part of Chinese identity, with towns being named after the flower (Chu Hsien=Chrysanthemum City) and weeks-long festivals held in its honor.

Emperor Akhito of Japan standing in front of his Chrysanthemum throne. You can see the flower emblem on the back of the chair.
A gorgeous yellow mum opening and closing.
The chrysanthemum came to Japan much later than China (5th century AD) and has since become deeply ingrained in Japanese culture. It had been widely admired and used in many facets of Japanese life for centuries before Emperor Go-Toba made it the official symbol of his reign (1183-1198). From that time to this day, the emperors of Japan have sat on the Chrysanthemum Throne. This concept encompasses not only the monarch, but the government that he rules. Thus, the image of this mum appears not just on the actual throne, but on official documents, stamps, coins and even Japanese passports.  An interesting side note: Even though the role is mostly symbolic these days, the Japanese emperor represents the world’s oldest continuing hereditary monarchy; the same family has ruled for 2,600 years. 
A beautiful peach, pale yellow and red spider type of mum from Japan.

Although their beauty is undeniable, mums have more to offer than just good looks. They are the source of the powerful botanical pesticide Pyrethrin. Like the ancient Chinese, the ancient Persians had mums, and they all were well aware of its insecticidal properties.  As early as 400 BC, Persians were rubbing pyrethrin ointments on their livestock to repel fleas and ticks. This article suggests that the mum, and it’s use as an insecticide, originated in Persia (modern-day Iran) and was brought to China along the Silk Road 2,000 years ago. Others claim it moved the opposite way. Wherever and however this use began, it remains an excellent alternative to synthetic pesticides. We carry a number of top-notch pyrethrin products – check them out here.

A Kenyan woman smiling while standing in a field of daisy-like flowers.
The introduction of pyrethrin was likely a game changer for those ancient Chinese and Persians, and the same can be said for people in Kenya when British colonizers brought it there in the late 1920s. Since pyrethrin has been around so long, it's unlikely that Kenyans had never heard of it, but the British presented it as a money-making crop and that was the game changing part. It seems Kenya has the perfect climate for the daisy-like Chrysanthemum cinerariifolium that pyrethrin is derived from. These flowers grow prolifically after the semi-annual rains and they can be harvested as frequently as every two weeks, providing a nearly year-round income for growers. By the 1940s, Kenya had replaced Japan as the world’s number on producer (a position it had held for hundreds of years. In addition to the financial benefits that this flower brought to local farmers, it turns
out that just growing the plant is enough to
Red and yellow Indian chrysanthemums (Chrysanthemum indicum
repel the sand flies that carry leishmaniasis. This infection, which can cause painful skin lesions and attack internal organs, has maimed or killed untold numbers of people in Africa. The benefits that the chrysanthemum brought to the Kenyan people got lost for a while as they struggled with their new-found independence in the 1960s, but it was still cherished enough to be a part of the new Kenyan Coat of Arms. Nowadays, the mum is back to being widely produced by farmers in Kenya and studies are being done to determine how it can be used to control the locust hordes that regularly decimate crops in Africa.

A beautiful chrysanthemum with pale pink swirling petals
An amber colored glass mug with some clear liquid in it and with a lemon and a chrysanthemum floating in it.
It’s hard to think of any other flower that has such widespread devotion, with the possible exception of the rose. Chrysanthemums are undoubtedly gorgeous, in all their varieties, but they also make a healthful and delicious tea that is a natural de-stressor. If you want to take a moment to try some Chrysanthemum Tea, here’s a video from a tea expert.

Submitted by PamLucy Ball and Desi Arnaz. Lucy's hair is sticking up everywhere and she is saying, "I've always wanted to look like a chrysanthemum".

Tuesday, April 9, 2019

Pyrethrins, Pollinators and other Beneficials

Close up of a purple flower with the sun in the background and a bee approaching. Photo by Simon Matzinger on Unsplash.
When there is an infestation in a garden, often the first thing a person does is reach for the insecticide. While this is a totally understandable reaction, that insecticide will not differentiate between pest insects and beneficial ones. Not to mention the extremely important pollinators. In order to maintain a healthy ecosystem in a garden, there needs to be insects doing their jobs, so spraying insecticides needs to be
done cautiously.

Pyrethrin insecticides offer a reasonable solution for the environmentally conscious gardener. Derived from Chrysanthemum cinerarifolium (a flower genus that includes both the Chrysanthemum and the Daisy), these extracts have been used since ancient times to fight insect pests on both people and plants. Pyrethrin insecticides have been around for so long because they work so well. But, before you spray this power to kill should be taken into consideration.


Close up of a black and red wasp on a yellow flower. Photo by Krzysztof Niewolny on UnsplashFor the purposes of this blog, I am going to focus on bees. Although Honey Bees are the number one pollinator in the world and their existence is currently threatened, they are by no means the only pollinators. However, the efforts one can take to reduce harm to bees will also work to protect beneficial insects, other pollinating insects and even non-insect pollinators.

The dangers to bees from pyrethrins are the same as the danger from any other insecticide, but pyrethrins do not persist in the environment as other more toxic insecticides will. They will, instead, break down rapidly, especially when exposed to natural sunlight. This makes them by far the superior choice for putting in your garden or grow.

Close-up of a bee on white, pink and yellow flowers. Photo by Janosch Digglemann on UnsplashBee deaths from insecticides come from a combination of events; a perfect storm of pollinator danger. Most fatalities happen when pesticides are applied to flowering crops and then allowed to drift at a time when bees are actively foraging. To address and lessen these hazards, we can break them down to several things you should be aware of: temperature, drift/distance from treated area and timing of application.

Temperature: Bees forage only in sunlight and love high temperatures, so they are out and about on bright summer days. Additionally, sprays are more likely to vaporize under high temp and this vapor can be an even greater threat than the spray itself. Which means you should only apply insecticides in the late evening or night. Early morning applications can be done as long as you are sure that the insecticide will have dried before bees can get to it.

Drift/Distance from treated area:  
• Pesticide drift is caused by multiple factors: weather, application method, equipment settings and spray formulation. Often, spraying will occur on flowering crops like fruits and vegetables and drift onto flowering plants like weeds and wildflowers, effectively stopping insect activities in both areas.

Close-up of a dandelion blowing in the wind in silhouette against an orange sky. Photo by Dawid Zawila on Unsplash• Insecticides applied in one area can affect insects and wildlife more than a mile away. Create a buffer zone around your spray area. Most bees forage 1-2 miles from their hive, but can travel much farther; so the larger the buffer the better.

• Be aware of the weather when you spray. Even light wind can enable drift and low humidity with high temperatures are optimal conditions for drift. Conversely, moderate temperatures with some humidity decrease the potential for drift.

• Carefully calibrate your equipment (smaller droplets drift more) and avoid aerial applications and mist blowers.

Close-up of a bee on a long-stemmed white flower. Photo by William Warby on UnsplashHere are some more tips to manage your drift.

Timing of application: If possible, never apply pesticides to flowering plants. Insect control should take place either before or after flowering. If application is unavoidable, a pesticide with a short residual rate (pyrethrins are perfect!) can be applied in the evening when temperatures are under 60 degrees.

Here are a few other things to bear in mind before applying a pyrethrin (or any other) insecticide:

• Before spraying, remove any flowering weeds around the area you will be spraying. This will reduce the temptation for pollinators and help form your buffer zone.

• Avoid spraying any favorites of pollinators.

• If possible, use pyrethrin insecticides in liquid formulations. Products with dusts or granules can easily stick to bee’s hairs and be taken back to the hive and cause damage there.

• Always read the manufacturer’s label and apply insecticide at the minimum recommended rate. Never exceed the recommended amount.

If you would like more information on how to look out for pollinators, I highly recommend you check out the Xerces Society. They have been in the forefront of invertebrate conservation since 1971 and really know their stuff.
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Looking for an effective, organic garden pest control spray? Check out the great organic pyrethrin-based liquid insecticides from our partner MGK Gardening - a proud producer of botanical pest control solutions for 100 years!



                                               

Submitted by Pam

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