Hello, I am not exactly new to gardening, having had two very successful ones in the past. The successful gardens were just tiled heavy clay earth with no amendments. This year is very different, almost all of my plants are failing. This garden is three raised beds that I used soil from an old garden spot mixed with general garden soil purchased from Lowes and a few buckets of sand to break up the native clay soil. I started many from direct sowing seeds, mid April. My spinach and lettuce sprouted to about 1 inch tall and then stopped growing, I removed them and planted starts purchased from Al Joes on Brookwood Ave, Hamilton, these are not growing either. I also planted tomatoes, zucchini, basal, cucumber and peppers purchased from Al Joes. All of the plants except for the peppers are starting to become sick. The tomatoes were in excellent condition when planted and now the leaf tips are turning brown and the centers are yellowing. The basal is not growing and starting to become pale in color. The cucumber and zucchini were a little pale in color when I bought them and have gotten worse and have brown spots on them. They almost look like they have blight. I don't have photos at the moment. The only plants that are doing well are potatoes, the peas and beans and onion are doing well just growing slower than expected. Also,the nasturtium direct sown mid April, are failing to grow. I am very discouraged and don't know what to do. I am tempted to abandon the garden and try again next year but my children are excited about the garden. Please advise. Thank you so much!