Quote:
Originally Posted by Swimmingorchids
If you want to boost growth above the normal potential of a plant the easiest way is to increase C02, light levels and nutrients accordingly.
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If only that was true! You are
never going to push a plant beyond its potential.
Carbon dioxide and mineral nutrition are raw materials
available for the plant to use when growing, and light provides the energy for the production of fuel, but unless the processes that utilize them have been "starved" for any of them, having an excess doesn't do much. Let's use building a structure as an analogy.
If you have a large crew on hand, but only a small amount of supplies, the rate at which that structure is built is limited. Increase the volume of supplies and it can go up faster. However, if you only have two carpenters working, it doesn't matter how large the stockpile of nails, lumber, and fuel for the air compressor that powers the nail guns are, the construction rate is limited.
The combined rates of the chemical processes that occur within a plant determine its potential for growth, but there are a great many factors that can (and do!) prevent the plant from reaching it. Throwing more fuel and building blocks at them without being certain
ALL of the others are satisfied is shear folly, and often counter-productive.
From a practical perspective, one of the best things you can do to accelerate your plants' growth is find a way to water them more. The old wives' tale that "orchids have to dry out between waterings", besides being downright wrong, has done a great deal to limit our plants from reaching that genetically programmed potential.
A plant's need for water as a building block is more than 18,000 times greater than its need for fertilizer. Find a way to grow your plants without suffocating the roots, and you can literally "pour it on" and reach closer to the potential.