When I lived in Phoenix AZ area I was told, you can not grow a garden in AZ. People from back East plant AZ garden like they still live back East. I planted my tomato plants Nov 1st. Soil test shows soil is powdered rock with lots of iron and 8ph with no food value for plants. I mixed a good amount of organic material in the soil locations where tomato plants were. I also added real fertilizer. All the neighbors told me to water my lawn 2 hours every morning, LOL. I know better not to water anything in the morning, mother nature waters in the evening and I do too. I had my irrigation set to water my plants 12 minutes at 9 pm every night using a 2 liter per hour nozzle. Every tomato plant got about 1 pint of water at 9 pm. My lawn got 10 minutes of water at 9 pm. Neighbors had water running from their lawn 12 blocks down the street, wow what a terrible waste of water. About 2 years later neighbors said, we never see you water your lawn and you have the best lawn in the neighborhood, what are you doing? I told them what I am doing, they roll there eyes and said, yea right tell the truth, what are you really doing? I had an excellent crop of tomatoes on Christmas day. Buy fertilizer at Farm supply stores 50 lbs bag closets less than 5 lb bag of organic fertilizer. Every plant in the garden needs different food, feed plants what they need. Tomatoes & potatoes need low nitrogen 5-15-15 fertilizer. Corn & greens needs high nitrogen. Beans need 10-10-10 fertilizer. Etc. I watered my AZ garden from a 5 gallon bucket. AZ water is 8ph also. I added 1 cup of vinegar to 5 gallons of water plus a small amount of calcium to water my tomatoes. It does not take much vinegar to lower 8ph water to 5 ph. After putting 5ph water on tomatoes and water comes in contact with garden soil, 5ph water comes up to about 6 or 6.5 ph that was much better than 8 ph. I am glad I took chemistry glass in school, I have no problem with synthetic fertilizer, nitrogen is still nitrogen no matter where it comes from. Phosphorus comes from rock that is mined then ground into powder. I use wood ash in my garden it is about 25% calcium and lots of K = potassium. When I lived in AZ there was no wood to burn.