How can I get rid of disease in my garden?

There could be numerous situaions and with out knowing what is wrong I would recommend not using seven.If you can post close up photos that will help to determine what is happening

You might contact your local home extension office to see if they have someone that could give you some advice. They may be able to tell you what the disease is you you will have a better idea of how to stop it.

I crush up six dried red chillies four cloves of garlic and two cups cooking oil mix it all togeather then top the water container with the mixture and water I fill the watering can to the top and water all my veg plants and they are so big and healthy cabbages cauli broccoli lettices herbs cellary carrots and more they are amazing very few nibbles on the leaves hope this helps

Seven dust is one of the worst things to use in a garden - you can kill a whole hive of bees if they land and then carry the powder back to the hive. Also, Seven is not for disease - it's for insects. If you MUST use it, at least use the spray when bees are flying because once it dries, it won't hurt them.

There are LOTS of disease symptoms, so impossible without some description of the damage and what kind of plants have it. And climate - are you in a humid area? Also a lot of sucking insects can even make something look diseased. If you can upload a closeup picture of a good example and tell us what the plant is, maybe we can help. Vegetables or flowers? Sorry, just not enough information.

Ok, just saw "vegetables". Also, nutrient deficiencies can look like disease. Need pictures close enough to easily see the damage to a leaf.