I'm not an expert, but there are several on the market that can provide a good P-K rich blend you need. Phosphorus will promote root growth; Potassium is for flowering and fruiting. All plants need a little Nitrogen but don't overdo it. Miracle-Grow for tomatoes is good, and there are some others that Lowes and Home Depot (& probably Wal-Mart) sell that provide higher ratios of Phosphorus and Potassium. I think one is 'Ultra-Green' and another I've seen is by Green Light called Super Bloom that is high in Phosphorus I think.

I've used a liquid concentrate called 'Earth Juice' and also put Osmocote slow release granules & composted cow manuer (Black Kow) in the hole when I plant. I supplement with water soluble feedings and also use Epsom Salts. Some folks use Compost Tea (homemade). I have also used the MG tomato fertilizer as a general purupose and go-to fertilizer every couple of weeks.

Hope this helps. You really have to find what works well for you and your soil. How big is your garden?

It is very small--just three tomato plants, some peppers and a few herbs. Thank you for such a detailed answer. It sounds like the phosphorus and potassium need to be high. I'll keep that in mind as I shop. Again, thank you.