Baking soda neutralizes the ph in the soil and nothing will grow there. I use baking soda in a 6" wide area around all of the edges of my flower beds to keep the grass and weeds from growing into my beds. Just sprinkle it onto the soil so that it covers it lightly. I usually have to do this twice a year - spring and fall.
The newspaper will prevent any grass and weed seeds from germinating, but unlike fabric, it will decompose after about 18 months. By that time, any grass and weed seeds that were present in the soil on planting will be dead. It’s green, it’s cheaper than fabric, and when you decide to remove or redesign the bed later on, you will not have the headache you would with fabric.
Self made Miracle Grow. Put 1 Tbs. Epsom Salt, & 1 Tbs. Sugar into each hole with your plant. It makes them grow larger, leafier and greener. Or dissolve 1 Tbs. Epsom Salt into 1 Gallon of water and use it to water your plants, trees, fruit trees, roses, flowering plants, squash,and all other veggies. For plants you have planted in ground or pots sprinkle Epsom Salt on top of the dirt/potting soil and water well. See Link for other ideas.
Will try this for my roses this year: A tonic for black spot and powdery mildew on roses Roses, while beautiful, are often plagued with black spot or powdery mildew. I mix these ingredients into a tonic, which I spray on my roses: 2 teaspoons of baking soda and 1/2 teaspoon of liquid soap or Murphy's oil soap in 2 quarts of water. The tonic protects the roses for months.
Perform your soil test by placing a sample into two separate cups or containers. Add vinegar to one. If it fizzes your soil is alkaline. If not, add some water to the second cup and stir. Add baking soda. If it fizzes you have acidic soil. If neither have a reaction your soil is somewhat pH balanced
baking soda to kill weeds! website says you sprinkle it in the places you don't want the weeds to grow (sidewalk cracks, edges of flower beds) and though it might take a minute, it will be a safe, effective weed killer.
Milk and Water Use: To control black spots on roses. How to make it: Add 1 cup of milk to 2 cups of water. Spray mixture directly onto rose leaves with a handheld spray bottle to protect them from black spots. Why it works: No one knows exactly why milk helps control certain plant diseases, but it does contain lactoferrin, a protein that has been shown to help control diseases in animals.