Growing Media

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When deciding upon which grow media to use there are many different factors to take into consideration. The look of the plants and the way the plants grow will be slightly different in each type of growing media. 

Certain grow media such as Soil will give the grower a bit more of a buffer. Therefore if pH or nutrient levels are not 100% correct soil is much more forgiving. Soil will hold the plant nutrients more, so the grower has to be careful not to over feed the plants when using chemical plant nutrients. Soil retains more water than any other growing media. This is something to be aware of  when plants are still small as over watering can occur if there is a lack of attention. When the plants are older watering can be reduced. Using organic soil such as Canna Bio Terra or Bio Biz All Mix with an organic plant nutrient will give the grower freedom of not having to adjust the pH. Soil will do this naturally. It is much harder to overfeed the plants as they will tend to take up the nutrients  through their roots as and when they need them.


Coco aka Coir has a similar look as soil but behaves in a different manner. It is a much finer and lighter media giving the grower a better air to water ratio. As coco is a lighter growing media it does not hold as much water or nutrients as soil, meaning it needs watering and monitoring more often. If the plants are over fed it is much easier to flush the plant nutrients out of the coco. Plants will also grow slightly faster and taller in coco over soil. The pH has to been spot on when using coco as it does not buffer the same as soil.

Clay Pebbles are the least forgiving out of the grow media's, however do not be put off by this. If the grower has the correct set up and products using clay pebbles, the grower can expect to get amazing results. It is important to note that clay pebbles have no way of retaining moisture, this will give the grower a very high air to water ratio meaning the plants will need watering many times per day. This can be achieved by using various hydroponic systems which are all available in store or online. Your pH levels will also have to be perfect as there is no way for the clay pebbles to buffer the levels.

A very good alternative to clap pebbles are Growstones. These are made from 100% recycled glass and are one of the most popular growing media in North America. Growstones are a highly porous grow media. It is designed to give an excellent air to water ratio without the risk of over watering.

Perlite is a non-toxic naturally occurring volcanic rock which is heated to high temperatures to produce a lightweight micro-porous material. Perlite has excellent water retention and drainage, this improves the aeration of the growing media.

Vermiculite is a naturally occurring, non toxic aluminium iron silicate mineral. It is then heated to extremely high temperatures which produces a lightweight mineral with a high surface area. Vermiculite is excellent at absorbing nutrients and preventing them from being washed away.