I am not sure where you are getting your info from but it is not precisely correct. "In general, fertilizers formulated for flowering and fruiting plants would contain amounts of nitrogen less than or equal to the amounts of phosphorus (i.e. 10-10-10 or 5-10-15) This is because phosphorus encourages flowering and fruiting. Too much nitrogen will stimulate leafy green growth at the expense of flowers and fruit production. (emphasis mine) Also, the recommendations are made for granular fertilizer formulations. These will generally supply nutrients to the plants for about 6-8 weeks. During periods of frequent rainfall or frequent irrigation, the nutrients can be leached out of the soil and fertilizer may need to be reapplied." "A common recommendation for vegetables is to apply 1 pound of a 10-10-10 fertilizer or 2 pounds of a 5-10-5 (or 5-10-10) fertilizer per 100 feet of row. The first number is the percentage by weight of nitrogen, the second the percentage by weight of phosphorus and the third number is the percentage by weight of potassium in the fertilizer product. Thus, 100 pounds of a 5-10-10 fertilizer contains 5 pounds of nitrogen, 10 pounds of phosphorus and 10 pounds of potassium. As already mentioned, applying nutrients not needed can cause problems with the vegetables you are growing. When an excess amount of nitrogen is applied to fruit crops such as tomatoes and squash, it is common to have all vines and no fruit. With corn, missing a nitrogen fertilizer application as the corn starts to tassel can result in poor ear production. When excessive amounts of nitrogen are applied to root crops such as turnip, carrot and parsnips, you may end up with many leaves and small roots." (emphasis mine) Both of these statements come directly form extension service publications, which were initially established to assist home gardeners. The same information will be contained in virtually any other vegetable growing resource. It is a widely accepted and common horticultural convention

I agree with desertdance, although it's not as bad a spreading weed as self-sowing ones. It can be managed though, but very hard to get rid of. So most problems with growing it come from over watering (poor drainage), or too much shade. Fertilisers don't make a lot of difference if those two aspects are okay. I was always told they do best if there's bare ground around the base of the plant baked in hot sun each day, even if the soil is a bit poor. So I don't think you'd notice much difference between those two.

Most plants absorb N-P-K in about a 3:1:2 ratio. Foliage Pro matches that ratio perfectly, whereas Dyna-Gro's other products contain way more P than necessary and considerably more K as well. The market is filled with high P fertilizers due to the myths that a 1:1:1 ratio is a proper ratio for general growth, and that even higher levels of P increase flowering. One might wonder why companies make these useless formulas, and I think the CEO of Dyna-Gro himself said it best. "...it is simpler to give the market what they think they need than to try to reeducate it." http://forums2.gardenweb.com/discussions/1388370/the-uselessness-of-high-p-fertilizers Can't say I blame him. If Dyna-Gro didn't make high P formulas, people would just buy them somewhere else. Thankfully they make a proper formula for those of us that want it. -Chris

Heruga - some of the common things that cause that are - 1.) Salt buildup (from either excess fertilizer and/or "soft" water) . You can flush the pot with plain water (or distilled or rain water) and let it drain 2.) Lack of humidity. You can mist or do something to increase the humidity around the plant (humidifier, gravel tray with water, etc). 3.) Fluoride (or other ion) sensitivity. Some plants are sensitive to some substances added to standard tap water so they do better with distilled. I know for many years, I watched my mom take her big hanging plants down, put them in the kitchen sink, and turn on the water to a trickle (the plant would be periodically swirled around so the water hit most of the pot's soil area), and then it was allowed to drain for some time. That was basically how she "watered" them. She would "blue juice" (miracle gro) them every once in awhile in between. She had some gorgeous plants that lived for decades. This is something that I know I really need to desperately do with mine and just need to get into that habit. What has made it trickier is that I need to find the best way to do it (most of mine are upstairs in bedrooms and I would have to either bring them down to the kitchen or do it in the tub).