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Monday, November 28, 2011
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Friday, November 25, 2011
How to Grow Snow Peas
Snow peas may have been named because in bright sunlight their light green pods look as if they might be tinged with frost. One of the oldest vegetables, the earliest recorded pea was grown in 9750 BC on the Thai-Burma border. Since snow peas are a favorite addition to Asian dishes, this pea might very well have been a snow pea ancestor.
In the large family of legumes, the snow pea (pisum sativum macrocarpon) is a flat-podded pea that bears both pods and seeds that are sweet and edible.
Snow peas aren't particular about soil quality, but they do need good drainage. Plant snow pea seeds about 2-inches apart and one to two inches deep. Snow peas grow best in full sun, but in an area where plants receive some shade from the midday sun as the season progresses.
Peas are a cool weather crop. Although snow peas adapt better to higher temperatures than regular peas, for best results you should sow seeds as soon as the soil can be worked. For best germination, keep soil moist yet be careful not to over water, since saturated soil will cause your seed to rot. In fact, the biggest problems you face in growing snow peas are root rot and powdery mildew, both of which begin in soil that is too wet. However, once seeds germinate, plants need to be watered regularly for optimum harvest.
Because they are legumes, there is no need to fertilize snow peas. In fact, legumes make their own fertilizer and are often grown as cover crops to replace lost nutrients to soil. However, snow peas, like most varieties of peas, are climbers and grow best with the support of a trellis, fencing, or beanpole.
When temperatures reach a steady 70 degrees, the rate of growth slows and plants begin to die. Harvest peas when pods are about three inches in length but still flat. You'll need to use your snow peas soon after harvest since they quickly lose their sugar content after they're picked.
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Monday, November 21, 2011
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Thursday, November 10, 2011
Choosing Grow Lights for Hydroponics Gardening
Hydroponics gardening makes a great hobby anytime of year, but especially during those dark cold winter months. In this system of indoor gardening, plants are grown without using soil. Instead, they are grown in a growing medium, feeding off of nutrient solution. As with any type of indoor gardening method, hydroponics gardening requires the use of grow lights in order for the plants to be able to synthesize food, grow, and reproduce, producing flowers or fruit. HID lights are often used for this purpose. HID, or high-intensity discharge lights, come in several varieties, including metal halide grow lights and HPS grow lights. All HID lights require a digital ballast in order to control electrical current through the lamp and ensure its proper function. Most also benefit from being used in conjunction with a reflector, which will direct and intensify the light that the bulb produces. LED grow lights are also very popular. These lightweight lights, using light- emitting diodes, produce a lot of light in colors useful for plant growth, and are cost effective as well. All of these lamps make great grow lights for hydroponics.
Metal halide grow lights consist of an arc tube made of alumina, inside of which is argon, mercury vapor and a variety of metals. The different metals give color to the light the lamp produces. The argon gas is used to get the lamp going at first when electrical current is introduced inside the arc tube from electrodes on either end. The arc of current vaporizes the metals and mercury, and thus light is produced. The benefit of using these lamps is that for such small bulbs they produce a lot of light, and are efficient to run.
HPS grow lights are also called high-pressure sodium lights. Like the MH lights, HPS lights also use an alumina arc tube. Inside this tube you will find sodium, mercury, and the noble gas Xenon to get the light started. Like the metal halide lights, HPS lights also require a ballast for their use, to stabilize their operation.
LED grow lights are similar in function to the lights you might see on Christmas trees during holiday times. They are a small, efficient and very bright light. The diode functions as a semi-conductor, and there are two crystals in this type of bulb. LED bulbs light up when electrical current moves from one crystal to the other. The light produced is surrounded by a reflector and is used with a lens to emit the light where you want it to go.
All of the aforementioned grow lights work well to grow your indoor plants to full horticultural splendor. They are also economical to run, and can be selected in terms of the color spectrum of light they produce in order to provide your specific plants with what they need to thrive.
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