None of my things I plant get fruit or flowers. Just huge leaves.

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I use pots and containers out on my patio. I also use the best types of commercial fertilizers. Nothing works.

  6 answers
  • Janet Pizaro Janet Pizaro on Jan 06, 2018
    improper fertilizing.what plants did you try?and what was the fertilizer used?

  • Dfm Dfm on Jan 06, 2018
    cut back on the fertilizers. way back. wait until you see blossoms on the plants, then a touch of a fertilizer. you are most likely using too much ... all the extra does is sport green growth.

  • Jacalyn Jacalyn on Jan 06, 2018
    I don’t know what kind of plants you have, but, just FYI, tomato plants won’t set fruit if it is too hot.

  • Jlnatty Jlnatty on Jan 06, 2018
    Don't over-fertilize, that can actually depress flowering and fruit formation and encourage excessive green growth. Sounds counter-intuitive, I know, but cutting back on the fertilizer works. Unlike using fertilizer dissolved in water or sprinkled on the ground when watering a flower or vegetable garden planted in the ground, inside a pot the residue salts from the fertilizer have no place to go and can sit on top of the dirt (that whitish icky looking stuff) or attach to and attack the plant's roots. You don't want either. You can find lots of articles on the internet on how/when to fertilize potted flowering plants and vegetables. Good luck!

  • Molly Anmar Molly Anmar on Jan 06, 2018
    If you're using fertilizer regularly, it's possible that the chemical mix is too high in nitrogen (which causes lush leaf formation but very little fruit/flowers).

    The secret to making your flowering trees, shrubs, annuals, and perennials bloom more is in the numbers.

    On the fertilizer container/bag, you'll see three numbers (ex: 5-5-5 or 10-10-10). These three numbers represent the primary nutrients (nitrogen(N) - phosphorus(P) - potassium(K)). This label, known as the fertilizer grade, is a national standard. A bag of 10-10-10 fertilizer contains 10 percent nitrogen, 10 percent phosphate and 10 percent potash.

    Fertilizer grades are made by mixing two or more nutrient sources together to form a blend, that is why they are called "mixed fertilizers." Blends contain particles of more than one color. Manufacturers produce different grades for the many types of plants.

    You can also get fertilizers that contain only one of each of the primary nutrients. Nitrogen sources include ammonium nitrate (33.5-0-0), urea nitrogen (46-0-0), sodium nitrate (16-0-0) and liquid nitrogen (30-0-0). Phosphorus is provided as 0-46-0 and potash as 0-0-60 or 0-0-50.

    Nitrogen helps plants make the proteins they need to produce new tissues. In nature, nitrogen is often in short supply so plants have evolved to take up as much nitrogen as possible, even if it means not taking up other necessary elements. If too much nitrogen is available, the plant may grow abundant foliage but not produce fruit or flowers. Growth may actually be stunted because the plant isn't absorbing enough of the other elements it needs.

    Phosphorus stimulates root growth, helps the plant set buds and flowers, improves vitality and increases seed size. It does this by helping transfer energy from one part of the plant to another. To absorb phosphorus, most plants require a soil pH of 6.5 to 6.8. Organic matter and the activity of soil organisms also increase the availability of phosphorus.

    Potassium improves overall vigor of the plant. It helps the plants make carbohydrates and provides disease resistance. It also helps regulate metabolic activities.

    There are three additional nutrients that plants need, but in much smaller amounts:
    Calcium is used by plants in cell membranes, at their growing points and to neutralize toxic materials. In addition, calcium improves soil structure and helps bind organic and inorganic particles together.

    Magnesium is the only metallic component of chlorophyll. Without it, plants can't process sunlight.

    Sulfur is a component of many proteins.

    Finally, there are eight elements that plants need in tiny amounts. These are called micronutrients and include boron, copper and iron. Healthy soil that is high in organic matter usually contains adequate amounts of each of these micronutrients.

    For tomatoes, if your soil is correctly balanced or too high in nitrogen, you should use a fertilizer that is lower in nitrogen and higher in phosphorus, such as a 5-10-5 or a 5-10-10 mixed fertilizer.

    To encourage flower bud production you can apply a fertilizer that contains a small percentage of nitrogen, a higher percentage of phosphorous, and a little potassium, something on the order of 5-30-5. Your local garden center will be a good resource for advice.

    Read the application instructions on the container to determine how much fertilizer to apply, and how often. A fertilizer high in phosphorous will increase flower production. You will see a difference.

    Remember the golden rule of applying fertilizers. “Not enough is always better than too much.”


  • Jlnatty Jlnatty on Jan 06, 2018
    I would. I know it's a pain if your're lugging bags of potting soil to a balcony or similar place plus the added expense, but I don't know that trying to "rinse out" built-up residue from fertilizer out of potting soil inside a pot would work very well.