Hi, JADAM community
Many JADAM enthusiasts still do not know how to choose herbs to control pests.
To address this situation I will attempt to summarize here all the knowledge regarding the potency of herbs that I collected while reading JADAM books, articles on the JADAM website, this discussion board, the discussion board in Korean, the official Facebook and Instagram pages, comments on the official YouTube channel, and also while watching the official JADAM videos and videos of other people interviewing Youngsang Cho and recordings of his seminars.
I've been experimenting with JADAM herbal solutions for many years, so I will also include my personal thoughts.
If you find errors in this guide or have anything to add, please leave a comment below.
I've chosen to put all JADAM herbs into 5 classes according to their potency and effectiveness.
I placed Ginkgo berries in class 1 because they have a strong control effect on almost all pests.
If you can obtain a sufficient amount of ginkgo berries, you won’t need JHS made with any other herbs.
The effective part of ginkgo berries is the fresh or dried meat and rind of the fruit.
Kernels of ginkgo fruits sold in Asian stores as a snack are not effective.
Fresh ripe berries collected from under a tree after trees shed fruits in autumn are more effective than unripe green berries or dry berries.
When boiling large amounts of ginkgo berries, it is advised to wear a gas mask because concentrated fumes can irritate the respiratory system.
I placed bracken fern and oleander in class 2.
Using bracken or oleander, it is possible to control the same pests as with ginkgo berries, but with a few downsides.
Bracken fern is effective against thrips only when the normal concentration of both JHS and JWA is almost doubled, which is sometimes inconvenient.
For example, in my experience, using JWA diluted at 1:25 was harmful to cucumber flowers in greenhouse.
Bracken can be used both fresh and dry, but fresh parts are more effective.
All above-ground parts of the plant are effective, including leaves and stems.
Oleander is an extremely poisonous plant.
Oleander plant itself is so toxic that there are a number of death reports from eating with chopsticks made of oleander.
Sap oozing from a freshly cut oleander branch can be deadly if it contacts bruised skin.
Dogs can easily die if they chew any part of the oleander plant.
It is called "Fence of Death" for a good reason.
Gloves, gas mask, good ventilation and extreme caution are required when making oleander JHS.
At the same time, a natural pesticide based on oleander JHS can be safely sprayed on human skin.
It is also completely safe to eat fruits immediately after spraying them
with diluted oleander JHS if fruits are washed before they are eaten.
Oleander is less effective against aphids and mites than ginkgo and Jerusalem artichoke.
Also, it is difficult to grow large amounts of oleander unless the winters are warm enough for it to grow wild.
All above-ground parts of the oleander plant can be used for JHS both fresh and dry, but fresh flowers and leafy stems with flowers on them seem to be more potent.
I placed KPFR or Korean Pasqueflower root in class 3.
While almost as effective as ginkgo, KPFR cannot control mosquitoes and stink bugs.
It takes 2 years to grow Pasqueflower roots, the process can be tricky, and the plants take up a lot of space in the garden.
Buying dry KPFR can cost a lot of money.
Only roots of the plant are effective, and fresh roots are better than dry ones.
KPFR is highly poisonous.
Other varieties of Pasqueflower might be effective as well, but that has not been confirmed.
In class 4 I placed plants that can be used to control only aphids, mites, caterpillars, and moths.
Jerusalem artichoke is easily grown and available everywhere in the world.
Plants can grow up to 4 meters tall and do not require much care.
Leaves, branches and tubers are effective.
Fresh leaves and branches are more effective than dry ones, and tubers are the most effective.
If sprayed with a foam gun for car wash, Jerusalem artichoke JHS is strong enough to control stinkbugs and flies.
All parts of Jerusalem artichoke are edible.
Pokeweed and Ginkgo leaves (fresh green ones, yellow fallen leaves as well as dried) are also effective against caterpillars and moths, but Jerusalem artichoke tubers are the best option.
I placed the rest of the plants mentioned in JADAM books in class 5.
These plants are only effective against aphids and mites.
Rosemary,
Mint,
Water pepper (Persicaria hydropiper),
Foxglove (Digitalis purpurea) leaves.
Red spider lily (Lycoris radiata) is highly poisonous. Use roots collected from autumn to winter
Garden balsam leaves and roots,
Tobacco leaves, both fresh and dried
Monkshood leaves and roots collected in autumn
Sophora roots collected in autumn
Garlic bulbs
Ripe fruits of Hot pepper, both fresh and dried
Peppermint leaves
Pyracantha fruits collected in autumn.
It is also said that all plants mentioned in the 100 Herbs for Making JADAM Natural Pesticide book are effective against aphids and mites. These plants are
Aconitum, Arisaema, Castor Oil Plant, Lacquer Tree, Yew Tree, Narcissus, Greater Celandine, Japanese Snowbell, Apricot, Nandina, Chinaberry, Climbing Bagbane, Hinoki Cypress, Onion, Purslane, Heartleaf Houttuynia, Potato, Madagascar periwinkle, Cinnamon, Clove, Japanese Pepper, Hylomecon, African Marigold/French Marigold, Crown Wood Fern, Veratrum, Carpesium, Lavender, Lopseed, Pinellia, Empress Tree, Wild Walnut/Walnut, Picrasma quassioides, Pomegranate, Common Cosmos, Tea Plant, Mustard, Securinega, Japanese hedge parsley, Temple juniper, Japanese Aralia, Korean Plum Yew, Corydalis, Japanese Belladonna, Royal Azalea, Lily of the Valley, Thunberg's Geranium, Japanese Andromeda, Shiso, Curly Dock, Chinese Lizards Tail, Asian Copperleaf, Japanese Hop, Sweet Flag, Sasa borealis, Taro, Datura, Wormwood, Salvia plebeia, Kobushi Magnolia/Oyama Magnolia, Mugwort, Coffee, Clematis, Turmeric, Pyrethrum Daisy, Juniper, Crowfoot/Longbeak Buttercup, Great St. John’s Wort/St. John’s Wort, Derris, Tree of Heaven, Decumbent Bugle, Knotgrass, Euphorbia humifusa/ Jigeumcho, Rough Cocklebur/ Changija, Japanese Royal Fern, Chinese Pepper Tree, Horsetail, Lilac Daphne, Common Gardenia, Common Fig and Japanese Fig, Japanese Rush, Japanese Chaff Flower, Japanese Pagoda Tree, Firethorn and Chinese Catalpa.
All the plants mentioned above can be replaced with Sodium hydroxide (98% pure NaOH) or Potassium hydroxide (90% pure KOH), but these substances can cause skin burns and damage plants, so always wear protective gear (a jacket and gloves, pants and shoes, goggles and a respirator mask) and follow recipes from the JADAM Pest and Disease Control book precisely. |
