Post by CC on Aug 18, 2011 23:29:37 GMT -8
Rosemary contains all of the compounds found in Lavender plants that are effective pesticides as well as fungicides. As a pesticide they work by blocking the octopamine receptor in many insects, resulting in paralysis, quick knockdown and kill. Octopamine receptors are unique to insects and has no adverse effects on mammals and birds.
There are commercial products which contain Rosemary Oil as the active ingredient like Ecotrol for example which is a professional product marketed to the horticulture industry.
You can make this at home for very little money or effort.
Fresh Rosemary Leaves
Because of the physical properties of the leaves you'll need to strip them from the branch and then dice them as fine as possible. You can try to put them into a food processor with some water and get them broken up pretty well if that's easier. You're not trying to make a puree but to expose the inside of the leaves so that these compounds can be extracted.
You want about 1 cup of Rosemary mash and add that to 1 gallon of hot water (about 170F) and you're going to let this sit for 7 days or so. At this point you want to add some kind of mint - Peppermint, Spearmint, Basil, Oregano, Marjoram - the specific mint isn't all that important. I use Spearmint because that's what's growing in my garden.
Puree about a cup of your mint leaves and add to the Rosemary tea that is brewing. Let this go for 3 or 4 more days. Strain the plant material completely, totally, absolutely - seriously. Your tea is now ready to spray on your plants.
Take 1/4 cup of the Rosemary tea, add 1 tsp. Dyna-Gro Pro-TeKt [liquid Silica (Si)] and 1/4 cup non-preservative Aloe Vera extract and fill to make 1 gallon of tea. Spray your plants completely. Totally. Absolutely.
Always, always spray at the end of the light period - you do not want these teas applied sitting under HID lights or even the sun. Just like THC (CxHxOx) which degrades from being exposed to air and light, these compounds (also CxHxOx) fair even worse because they're water soluble (or at least in a aqueous suspension in the case of specific oils).
Repeat every 72 hours like any organic pesticide or fungicide.
Dry Rosemary Leaves
Dried Rosemary leaves may be a better choice for some folks because there's is less handling. Simply take 1 cup of dried leaves and put them into a food processor and beat them to death. Add about 2 cups of hot water (170F) and try to get them processed further like I mentioned above.
I've used dried leaves, fresh leaves and even Rosemary Oil and all performed equally well.