How much seaweed?

[Corsetière]

Can too much seaweed harm plants in s/h? I have Neptune's Harvest (stated on the label to be 0-0-1). It says to use 1 tbsp per gallon. I have been diluting this in half just to be safe. What is optimal? Amount per gallon and feeding times per month?

[Gthumbz89]

Half the recommended strength is just fine IMO. It's always best to under fertilize rather than over fertilize. I learned this the hard way when I was trying to force my plants to grow new roots with superthrive. The result of that experiment was brown unhealthy roots and deformed flowers. Less really is more.

[Corsetière]

I could probably just add like 1/2 a tbsp of seaweed to my regular s/h msu fetilizer solution right?

[tucker85]

Yes, you can add it to your regular fertilizer.

[Ray]

1) Seaweed extract, by itself, may have some nutrients in it, but it should not be considered to be a fertilizer.

2) Not all seaweed extracts are the same, and I know nothing about Neptune's Harvest, but I use KelpMax at a tablespoon per gallon with no issues.

3) Excessive treatment can be detrimental to the plant, but I believe that is more related to frequency than dose, within reason. The plants' response to the hormones takes about 2-3 weeks to go through its full cycle, so I'd not treat any more frequently than that - personally, I prefer a month.

[Corsetière]

Originally Posted by Ray

The plants' response to the hormones takes about 2-3 weeks to go through its full cycle, so I'd not treat any more frequently than that - personally, I prefer a month.

Ah! Very good information here!

Thanks for the advice!