Tomato plants are one of the most common vegetables grown in home gardens in the United States. While the plant is known for being a relatively simple plant to grow and harvest, the plant's requirements must be met at all times. If your tomato plants have no flowers, it means they will not produce fruit, which is a problem that needs to be addressed immediately.
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Tomato plants require a lot of essential nutrients not often available in garden soils. A plant that has healthy foliage, but no flowers or fruits, may need fertiliser. Ideally, fertilise the garden before planting tomatoes. At this stage, with green flowerless plants, apply the fertiliser generously on top of the soil around the plant base. Select the amount based on the tomato species you have since all require various amounts. Apply the fertiliser again when you spot the first fruits forming in clusters. After the first fruit set, add fertiliser every week or 10 days, recommend horticultural specialists from the Texas A&M University AgriLife Extension.
Tomatoes require at least eight to 10 hours of direct sunlight to grow healthy green foliage, fluffy blooms and juicy crops. If you grow your tomato plants in containers indoors, move the non-flowering plant to a south-facing window, which will receive the most direct light. Add a sun lamp if the plant remains in partial shade. Rotate the plant every day or every few days to make sure each section of the plant gets equal amounts of light. For outdoor tomatoes, transplant the entire plant in an area of the garden or yard that receives uninterrupted sunlight from morning to late afternoon.
Depending on the soil type in your area, it may be that the soil is drying out too quickly, leaving your tomato plant moisture-stressed. Mulch the soil around the tomato plant with an organic material such as grass clippings, tree leaves, pine needles, shredded newspapers or wood chips. Apply a 2- to 4-inch layer. Plastic, inorganic mulches also prevent weeds, evaporation and help maintain a steady soil temperature. Tomatoes produce flowers and fruits earlier and have higher quality crops when grown on a plastic mulch material, such as black, clear or coloured plastic sheets, according to a May 2005 study published by Iowa State University Extension.
Warm or Cool Temperatures
Tomatoes thrive in warm soil and temperatures between 21.1 and 26.7 degrees Celsius. If nighttime temperatures in your area dip below 50 degrees, this may stunt your plant's ability to produce blooms. If temperatures are cool at night, cover the plant with a burlap cloth. Lift the cloth when warmer temperatures resume. If sizzling hot weather is the problem, the two options are to water the plant more frequently -- up to 2 inches of water per week -- or to transplant the plant into a container that can be moved indoors.
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