G'Day Carlos, It's a little hard to tell from your description but I think the problem may be in your fertising routine. Depending on what you are growing (and plants of different families require different amounts) it sounds to me that you are giving them a lot of nitrogen and very little of a balanced diet.
You might like to get yourself a soil testing kit to check the acidity of your soil and then check out the "feeding" habits of what you are planting to see what the NPK value they require. For instance I place a small amount of sulphate of Potash (Potassium) around the base of my tomatoes which helps the fruit to form.This may well be your problem.
The following link might help you to understand what I am talking about. http://www.cleanairgardening.com/npkexplanation.html
Good luck.
Les
Jun 14, 2009
Vegetables not setting fruit by: Mannix
Hey Carlos, can you give more information? What sort of plants are you growing?
If they are squashes, like zucchinis, then the females flowers need pollen from the male flowers. Both flowers will fall off after about a day but the female flowers will have squash growing at the end. You could be short of garden bees so you need to hand pollinate.
Or are you talking about tomato flowers, or peas or what? Give your tomato flower trusses a shake to spread the pollen, or spray with a fine mist of water. Sometimes too a plant grows so many flowers that it doesn’t have the energy to set the fruit so you should remove some flowers if there are too many.
Hope this solves your problem, if not send in more details. M
