Most gardeners, bonsai artists and orchid lovers, regularly use seaweed extract or seaweed fertilizer and frequently ask “can I mix seaweed fertilizer with normal fertilizer”….
Most seaweed extracts are not technically "fertilizers" and have negligible (if any) NPK content. Therefore, mixing seaweed extract and fertilizer does not normally cause an "overdose" of fertilizer.
Firstly, check if your seaweed extract has an NPK rating. If your seaweed extract has an appreciable NPK (fertilizer content) then do not combine it with fertilizer. You must not “overdose” your plants with fertilizer.
If your Seaweed extract does not have an appreciable NPK (fertilizer content) you may consider combining seaweed extract & fertilizer simultaneously.
If you intend to use a watering can (the old approach), combine the recommended seaweed extract dose into the same watering can as your intended fertilizer. Watering cans are a messy and laborious way to fertilize, but at least it will save you half the time.
Of course, the quicker, easier, less messy and more enjoyable way to apply fertilizer and seaweed extract is to use a fertigate automatic fertilizer unit. You can either apply:
Applying seaweed extract by iteself is easy and straightforward.
Mixing seaweed extract and fertilizer requires a little mathematics to work out the proportions of Seaweed extract and Fertilizer to be combined but will save at least half the application time.
We will consider an example first and then provide a formula you can use. For the following example, assume:
In this example:
The specified Seaweed dose frequency is 20 day intervals. Since we will be dosing every 10 days (fertilizer manufacturer's recommendation), we must dilute the seaweed extract by a factor of 10 days / 20 days = ½.
Now simply adopt the following three steps:
Having worked through the above example, record your fertilizer and seaweed extract values as below and insert the corresponding values into the formula to calculate the fertilizer and seaweed proportion to be stored in a combined container. (Note – it is important to use the nominated units in the formula)
Calculate the volume of Seaweed extract and fertilizer to be placed into the storage container as follows:
Clearly label the container as “Seaweed & Fertilizer Mix” and the “Dose Rate” setting for your fertigate automatic fertilizer.
Combining fertilizer and seaweed extract provides a huge advantage to your plants - ensuring both are available for uptake as the plant requires. It is a refinement on traditional fertigation outlined in this article.
You can also micro-dose the fertilizer and seaweed extract at more frequent intervals. Simply adopt the principles and methodology outlined in this article.
We have been fertigating with a combination of fertilizer and seaweed extract each and every day for a long time. Our bonsai, orchids, vegetables and plants have never looked better. They are healthier, more resistant to pest and disease than ever before.
Consider one of the fertigate range and enjoy watching your garden, trees, bonsai and orchids develop as quickly and as healthy as ours.
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The MixRite 2.5 automatic fertilizer unit is an ideal automatic fertilizer pump system for the majority of domestic garden, orchid lover, bonsai artist and small nursery requirements. They can be used with a broad range of fertilisers and seaweed extracts.
Obtaining their source of energy from the mainstream water flow, they are economical to operate and easy and simply to install.