The orchid family (Orchidaceae) includes approximately 600 genera and about 30,000 natural species worldwide. Orchids thrive in U.S. Department of Agriculture plant hardiness zones 1 through 13, depending on the species, but most houseplants are tropical orchids. These exotic-looking plants have earned a reputation as being difficult to grow, but...
In fact plants acidic fertilizer is also important as that of organic fertilizers for plants (azaleas,roses,rhododendrons, blueberry, hibiscus and other acid-loving plants) needs acidic fertilizers.For instance,eggshells are almost 100% calcium carbonate, one of the main ingredients in agricultural lime; vinegar has acetic acid; & coffee not only lowers your soil pH ,it also enriches it with nitrogen,magnesium and potassium. too much ...
Aspirin is the remedy for fungal plant problems, Black spot, powdery mildew, and rust are a terrible trio of fungi, which can attack and destroy your plants. Scientists have found that two uncoated aspirin tablets (325 milligrams each) dissolved in 1 quart of water and used as a foliar spray can thwart these diseases. I have not tried this, but I will.
Homemade "Miracle Grow": Get a clean glass or plastic jar, put a little water in it. Add egg shells and coffee grounds until it's about 3/4 full. Top it off with water and allow to sit in a cool, dark place for about a week, gently shaking once daily. Strain and use the liquid when ready to feed plants.
SECRET Fertilizer :) My 'fertilizing cocktail' consists of mixing 1/2 bottle of cheap beer, 1 tablespoon of Epson salts, and 2 tablespoons of fish emulsion in a watering can (1-2 gallons). I do this to ALL my vegetable, flowers, and indoor plants. You will definitely notice the difference in a few weeks! Don't waste too much money on the beer. Cheapest still works great -- plants aren't picky!