The first step you need to do is make sure the area where you are planting is clean and maintained properly. Make sure all your planting equipment is clean and sterile.Wash all your pots and seed trays in hot soapy water. It is much easier to prevent an outbreak then cure one. Diseases develop and spread fast so prompt action is essential. The first thing you should do is plant your own seeds and raise your own plants. Make sure your seeds are sown in sterile mix and kept in clean seed trays.
If you are going to plant already grown plants make sure you buy them from a reputable company or nursery. If certified disease plants are available buy only that type. That way you will know your starting out with a healthy stock of plants. Remove and destroy any affected parts as soon as you notice signs of disease. This will help prevent the disease from worsening and affecting other plants. If the plant is badly infected it is better to just destroy the whole plant. Follow a crop rotation plan each year, growing the same type of plants in the same patch of soil will give disease organisms the best opportunity to build up. Make sure you provide proper spacing between each plant.
You must never overcrowd plants. Most disease thrive in a humid atmosphere. A good airflow is a must. Thin seedlings out as soon as they can be handled. Keep you garden as weed-free as possible. Weeds create a humid micro-climate around the plants. The best way to get rid of them is to saturate the ground and pull them out by hand. Make sure you take extra precautions when watering. Use a soaker hose or water plants from the bottom. When you overhead water the moisture stays on the leaves and this is more likely to promote diseases. Water splashes may also carry disease spores form one plant to the other.
Investigate each plant you plant. Certain weather condition contribute to plant diseases. Especially hot humid weather. But, even warm dry weather can contribute to powdery mildews on plants. Know which diseases are likely to appear for each type of environment and keep an eye on your plants. Keeping your plants healthy requires a few techniques, provide proper growing conditions, don’t overcrowd, provide nutrients, and give the plants proper watering. The healthier your plant is the less likely it will contact a disease.
You can use fungicides to help prevent diseases. Two fungicides for organic use are copper and sulfur. You can also use fungicidal soaps to prevent diseases. There are many different sprays for disease control on the market if you have spotted some disease on your plants. Act quickly to avoid it spreading to the other plants.