Try using worm tea for all your plants and vegetables. This tea is 100% organic with no additions, it is great for fertilizing and condtioning soil. It is excellant for retarding and preventing black spots(fungus) on roses. This tea is made from composting worms (red worms) you mix 4 tbs. with 1 gal. of water and put it in your sprayer or hose end sprayer as it has no sediment to clog nozzles. the tea is from worm castings (worm poop) and provides many nutrients, benificial microbes and bacteria essential for healthy plants and delicious veggies. you can use it on veggies, flowers, indoor plants,berry bushes, shrubs,lawns etc. Use it every time you water your plants. This tea when applied contains, 5 times more nitrogen,7 times more potassium,11/2 times more calcium than is found in the top 12" of your average topsoil. It also contains copper,zinc,cobalt,bosox,iron and carbon. Try this, its good stuff.