Correctly Spacing Plants in Your Indoor Garden

If you’re setting up an indoor garden, the spacing of plants can be a critical factor underlying how much your garden yields. We have prepared this article to outline some of the basic ways that plant spacing effects light absorption, and some tips to optimize your garden’s success.

When light shines on a garden, the leaves near the top of the plants get more intense light than the leaves at the bottom. The top leaves shade the bottom leaves and absorb energy, making less light available to lower leaves. If the lower leaves do not receive enough light, they will yellow and die. Tall six-foot plants take longer to grow and have higher overall yields than shorter four-foot plants, but the yield will be about the same.

Atleast 99 two-week-old seedlings or cuttings can be huddled directly under a singele 400-watt HID. The young plants will need more space as they grow. If packed too closely together, plants sense the shortage of space and do not grow to their maximum potential. Leaves from one plant shade another plant’s foliage and slow overall plant growth. it is very important to space young plants just far enough apart so their leaves do not touch or touch very litlle. This will keep the shading to a minimum and growth to a maximum. Check and alter the spacing every few days. Eight to sixteen mature tomato plants three to four months old will completely fill the space under one 1000-watt HID. Plants can absorb light only if it falls on their leaves. Plants must be spaced so their leaves do not overlap too much. Yield increases very little when plants are crowded. Plants also stretch for light which makes less efficient use of intense light.

Best number of plants per square foot is often a matter of experimenting to find the magic number for your garden. In general each 40-inch square of space will hold from 16 to 32 plants.

Tags: Best Grow Lights, Fluorescent Flood Lights, Garden Grow Lights, Grow Lights for Plants, Hydroponics NJ, Indoor Garden Lights, Indoor Growing Lights, LED Growing Lights, T5 Grow Lights

This entry was posted on Wednesday, July 28th, 2010 at 6:33 pm and is filed under Hydroponic Growing System, Indoor Growing Lights. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

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Plants give biofeedback to optimize their own light levels in hydroponics – Green Prophet


Controlled environment agriculture is rapidly becoming an important part of the global food system. For example, there has been much interest in the potential of large-scale, indoor agricultural production – often referred to as vertical farming – as a means to produce high quantities of produce.

These “plant factories” are expensive to operate, however, in part because of the large power requirements of electric lamps that provide the type and amount of light necessary for photosynthesis in plants.

See related: flux device monitors and controls your food destiny

To find new methods of adapting lighting to plants’ requirements in controlled environments such as vertical farms, researchers from the University of Georgia, Athens developed and tested a biofeedback system that allows for the control of light levels based on the physiological performance of the plants. “Controlling the intensity of light based on plants’ ability to use it efficiently may substantially reduce the energy cost of LED lighting, and contribute to making large-scale controlled environment agriculture more profitable,” one of the researchers reported.

The researchers used lettuce, pothos, and sweet potato plants in experiments with photosynthetic light provided by a 400-Watt LED. Using chlorophyll fluorescence measurements, a data-logger determined how efficiently the plants used the light they received.

This data was used to calculate the electron transport rate (ETR), which is an indicator of photosynthesis. The data-logger then altered the duty cycle (the proportion of time that the LEDs are energized during each short on/off cycle) of the LEDs to provide more or less light.

The target ETR was altered in a stepwise pattern over a 15-h period. The biofeedback system was capable of automatically adjusting the light levels to assure that the desired ETR was reached. As the target ETR was increased, light levels increased as well. In addition, conversion of light energy into heat (a common way for plants to deal with excess light) was upregulated, while the light use efficiency decreased.

As the target ETR was decreased during the last 7 hours, conversion of light into heat decreased greatly in lettuce and pothos, with only a small increase in light use efficiency: “This suggests that the light use efficiency of lettuce and pothos was limited by a process other than conversion into heat, likely light-induced damage to the photosynthetic machinery in the leaves,” the authors noted.

“The biofeedback system successfully maintained a wide range of ETR values in different species, while it also is capable of distinguishing between conversion of light into heat and damage to the photosynthetic machinery as causes for decreases in light use efficiency,” the authors said.

They said the biofeedback system has potential applications in controlled environment agriculture, as well as basic plant physiology studies, where the system can be used to maintain specific levels of physiological activity.

Karin’s interests intersect in the worlds of the environment, technology, activism and Middle East politics. Blogging for some of the most influential media outlets in the “green” world, such as TreeHugger, and The Huffington Post, Karin founded Green Prophet to share the enormous potential of new clean technologies, and environmental awareness emanating from the Middle East region. For tips, advertising and editorial inquiries Karin can be reached at [email protected]

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Growing Basil – How to grow basil plants

By geekgardener, on September 15th, 2015Growing Basil in Containers Growing Basil – How to grow basil in your garden

Basil, known by the Botanical name Ocimum Basilicum, is one of the most popular herbs and the easiest to grow in a kitchen garden. Growing basil is also fun since there are so many varieties of basil to choose from. You name a flavor, there is a variety of basil with it. Lemon Basil, Cinnamon Basil, Clove Basil.. See what I am saying? Growing Basil in a container or in the ground outdoor is very easy if you learn these tips on how to grow basil.

Though Growing basil is very easy, it is important to remember few basic things that are important for growing any plant.

Whether you are growing basil plants outdoors or growing basil in a container, the drainage has to be proper. There should not be stagnant water. If you are planting basil in a container, pay attention to drainge. There should be drainage holes in the bottom.

Another important thing for basil plant care is to locate a spot that receives good bright sunlight. If you are growing them in a container, place them in a balcony that receives 3-4 hours of direct sunlight.

Basil can be grown using seeds and also from cuttings. If you decided on growing basil seeds, the procedure is very simple. Simply sprinkle or scatter the seeds on surface of the soil or potting soil and lightly cover them with soil or mix. Water them well.

If you decided on growing basil from cuttings, you’re job is much easier. Simply take a cutting from a healthy plant and make a nice cut beneath a node, leaving a 2-3 inches of stem. Stick the cutting into a moist potting mix and cover them up with a polythene sheet. In a week, rooted cuttings are ready.

While growing basil in soil or outdoors, remember that basil plant is cold sensitive and very low temperatures can kill the plant. Wait till the last frost has passed. If you are in the tropics, as I am, just don’t worry. Any day is a good day!

This is the most important tip/trick on how to grow basil. I wish someone told me this when I grew it the first time. Harvest often! The secret on how to grow basil successfully is to keep harvesting often. More you harvest, more the basil plant will grow. Just pinch off the stem right above the node. Basil plants get bushy as you harvest and tends to produce more leaves.

Another tip worth remembering when growing basil is to never let it flower. Basil plants, after flowering, lose their flavor and also the vigor of the plant comes down. To keep the basil plant producing more and more basil leaf is to not let it flower.

Feed the basil plants with general purpose fertilizer such as 10-10-10 or 19-19-19. If you are growing basil organically, add good dose of organic compost when planting and after pruning/harvesting.  Adding Epsom salts for herbs will bring out a lush green crop. Remember this when growing basil. Do NOT over-fertilize the plants. Basil plants might grow well but the flavor will be compromised.

These tips on basil plant care will help you harvest the good quality basil leaves from your garden. Learn how to grow Basil,the king of herbs and you will never to buy basil from the market again.

Guide to Growing Basil – How to grow basil plantsGrowing Basil in your garden will save you trips to the super market and also provides you with the freshest basil you can ever get. Learn How to grow basil and enjoy the harvesting basil leaves!Share this with your garden buddies:

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