Umm Nicotine isn't used as a pesticide anymore and hasn't been for a while hence it isn't available to Joe Public Mr Retired Gardener/Farmer on the open market as a pesticide, it's uses were widespread for weed killing etc but the effect on the environment (bees for instance) was finally deemed as too harmful and hence now not used nor available in your local garden centre/farm shop.
It is however available from some chemical distributors still i.e. Darrant as already mentioned in this thread but all you have to do is see the colour of their nicotine to realise that you wouldn't really want to use it for vaping, as far as I am aware you will indeed need a license of some description to still purchase it and that would be in bulk and not 100ml here and there.
Gardening
Tobacco is a great insect repellent for the kitchen garden. By simply soaking as little as a cigarette amount of tobacco in a quart of water and allowing it to soak overnight, the nicotine released in the water will create an all purpose insect repellent.
Aphid Control – Aphids are a real nuisance if allowed to thrive on garden plants. Here’s a handy tip to rid your garden of them for good!
- Prepare a mixture of 1 cup. powdered garlic
- 1 c. compost
- 1 c. tobacco (organic preferably)
Blend this mixture into the soil around the base of your aphid infested plants.
Peach Tree Borers – Sprinkling tobacco dust around peach trees will deter the dreaded peach tree borer from infesting your tree.
Leaf Roller – These greenish larvae make a home out of perfectly good leaves. They can destroy plants of all kinds in a matter of weeks! I have created an offering plate for birds every morning of these caterpillars. But to easily rid your garden of them:
Use a mixture of tobacco dust, pyrethrum powder (dried pyrethrum flowers crumbled into a powder) and make a solution to spray on the leaf roller.
Garden Centipede – These litter guys will eat your young plants up in no time, so get rid of them with this simple solution:
Drench the soil with a mixture of water, garlic and tobacco. Caution: This is a very foul smelling, but potent combination.
Gophers and Moles – Did you know that gophers and moles hate tobacco?
Shred a package of non-filtered cigarettes and drop it down in the hole. They cannot stand it!
Spiders – Although garden spiders are always welcome in my garden, it’s cousins are not allowed! To rid your yard of spiders:
Boil 1 gallon of water and drop a package of chewing tobacco into the water and allow to cool.
Once cooled, strain the solution and use it as a spray around the yard and in the cracks of your home