The urban gardener


hydroponic plants receive all the nutrients they need for growing and fruiting from the growing liquid with all the nutrients dissolved in it. Hydroponic nutrients are available in great variety at specialized hydroponic stores. By the way, both chemical nutrients and organic nutrients can be used for the needs of hydroponic gardening. The only thing to remember is that organic fertilizers require more skills, time, and attention to use them effectively.

Hydroponic gardening allows anyone to grow organic vegetables, fruits, and flowers. A little research, learning and training, combined with enthusiasm, will soon bring the first success in hydroponics to you.

Today, there are many ready-made hydroponic systems available on the market. They are not too expensive, but such systems can really help to make an easy start in hydroponic gardening. For the beginning gardeners it is even recommended to choose simple inexpensive hydroponic systems – they are enough to give you the necessary experience. Of course, you can always build you own system to suit all your particular growing conditions and requirements, when you have enough experience and understanding of how hydroponic system works.

If organized properly, hydroponics gardening can even be easier than traditional plants growing. For example, with hydroponic system it is much easier and less time-consuming to test and maintain the necessary pH level in comparison to the regular soil gardening, where even the pH level testing can be a very challenging task, not speaking about maintaining it on the required steady level.  

After all, it is necessary to remember, that in spite of the fact that hydroponics differs significantly from traditional gardening, it is nothing but an alternative approach to grow the same fresh, tasty, and healthy food. Just spend some time to research the topic, evaluate all the benefits of hydroponic gardening – and you will see that there are many advantages offered by hydroponics. Growing healthy organic vegetables without polluting and exhausting fertile soils is definitely one of them.



Robert

The urban gardener


The use of organic plant nutrients instead of the man-made chemicals in the hydroponic garden eases the work of a gardener. The matter is that the absence of synthetic chemicals eliminates the problem of ppm amount and pH balance of the water. If there is no need to calibrate nutrients, to check pH level of the water, and calculate fertilizer’s amount, a beginner of the hydroponic gardening will definitely make no mistakes, which means many problems may never occur.

A dual root growing system is made by special composition of the medium in the container: the upper part of the medium is soil or soil substitute, and organic nutrients can be supplied directly to this upper part; the lower half of the medium is some porous material, which retains water, but to which no nutrients are supplied. 

Creating an organic hydroponics system, a gardener may use a standard hydroponic grow container, though a coir fiber container will suit too. The preferred material to put at the bottom of the box is lava rock, which perfectly keeps water. Lava rock is then covered with a thin layer of loose rockwool or coir fiber to divide both medium layers and prevent them from mixing together. The upper half of the container should be filled with a mixture of 1/3 potting soil, 1/3 coarse grade horticulture perlite, and 1/3 large-sized horticulture vermiculite. Such arrangement ensures the upper capillary action of water and protects the bottom of the grow bed from the occasional mixing with any organic particles. 

Using a standard plastic hydroponic grow container one should place a plastic screen lining inside the grow bed, fitting it well at the bottom and on the walls of the container up to their top, also with the aim to protect the water from the small particles in the medium mixture. It is also possible to use a hydroponic container with tiny holes.

One more good choice for the use of organic gardening methods in hydroponics system is coir fiber containers. The filling is the same as described above with the thin layer of loose or strand coir fiber between the two types of medium. 

Such box is then set in the grow bed. Note that the level of the pumped water should be a bit lower than the soil mixture. The secondary root system will be submerged into the water along with lava rock and promote the capillary water flow up into the soil. The lower half of the medium may be watered on a regular hydroponic basis, while the upper one can be moistened just once a day. 

This system allows a gardener to supply nutrients right to the upper part of the medium, where they are vitally important. At the same time, the whole medium structure will be perfectly moistened by the pumped water and the plants will also have constant supply of oxygen and CO2, drawn into their root systems. Finally, proper amount of CO2 will improve the absorption of nutrients by the upper parts of the roots. 



Patricia

The urban gardener


“Ebb and flow” hydroponics system is an example of the common arrangement of the indoor garden. Such system is composed of the upper grow bed, which is a box or tray that holds containers with plants. Those individual containers may be filled with various mediums, the most frequently used ones being rockwool, coconut fiber, lava rock, perlite, vermiculite or styrofoam pellets. The best mediums are those that are porous and can accumulate some water for a long time: lava rock is said to be the best in this respect.

The other part of the hydroponic system is the lower bed – the reservoir with the mix of water and nutrients dissolved in it.  Aquarium pump, regularly triggered by a timer, sends water solution up into the tray with plants.

The most important thing is to keep the correct composition of water solution in the reservoir – this is the key factor of the hydroponic garden flourishing. Many beginners find it difficult to maintain the right pH level of the water, necessary amount of nutrients, and their correct ratio. 

Standard organic plant nutrients are available to fertilize plants; however, many people are reluctant to do that, as they think such fertilizers will quickly make the water reservoir dirty. Indeed, organic nutrients interact with the organisms in water, which leads to their decomposition. Specialized concentrated nutrients, on the other hand, keep the reservoir relatively clean, since they are synthetically made and thus they cannot interact with the organisms in water. Nonetheless, such “clean” fertilizers will severely burn the plants roots if used in access.

Being pumped into the grow bed, water with a fertilizer saturates the plants and returns to the reservoir lacking the previous amount of nutrients and ppm (parts per million). Thus, its composition is always different and changeable. That is why a gardener should always monitor water solution, controlling its pH level and plant nutrients amount.



Warren

The urban gardener


Gardeners experience proves that the mixture of vermiculite, perlite, and organic potting soil (loose 100% organic soil mixture is also suitable) in equal proportions is the best for the successful organic hydroponics gardening. Such mixture offers the perfect upward capillary action of water and supply of CO2 and oxygen. Organic soil in the upper medium layer provokes microbial action.

Some growers practice mixing organic nutrients (e.g. worm castings) into the upper medium part. Others just distribute them on the surface of the grow medium and then spray them with water. Another way is to mix nutrients with half a cup of water and pour onto the top of the medium. Any of these methods ensure proper nutrients entrance into the soil mixture and good absorption by the plants primary roots.

The upper layer of the medium is also called “soil alternative”, as it is the place where the nutrients are supplied to. It is treated as a standard soil container. To improve the capillary action of the water delivered by the lava rock at the bottom, it is recommended to spray the soil alternative once or twice a day with water.

Creating your organic gardening using hydroponics system pay special attention to the level of the pumped water, this must not moisten the upper part of the medium. If this happens, the nutrients, delivered to this soil part of the growing medium, will be washed out into the water reservoir, becoming unavailable for the upper part of the plants root system.

The usual watering cycle takes about half an hour to make the whole upper part of the medium wet. If this time is not enough, you may set the timer to prolong the cycles. It is also possible to spray the upper half of the growing medium with water in addition to the regular pump-triggered watering. Remember that soil-based part should never be soaked in water – being moist is enough for growing organic plants.



Shawn