Let it sit for at least a couple of weeks (or more like a couple of months in cold weather). You don’t have to rinse off the salt first, although if you happen to know you already have an excess of salt, you certainly can. If you want to make a basic liquid seaweed fertilizer, pack the seaweed into an airtight container and fill it with water. If you live near a beach with some seaweed on it, you can just take that and use it directly as a seaweed garden mulch, provided it’s legal in your area to remove it.īe sure to leave most of it for the beach, though, as it has a big role to play there as food and habitat for many different species. Organic farming consultants often recommend it be included in any spray application regardless of what else is being used. In addition to the nutrients it contains, many of the benefits are attributed to the “plant growth regulators” in seaweed. He published many papers and eventually wrote a great little book called ‘Seaweed and Plant Growth.’Īnd since then, there has been a ton of research. Senn did a lot of research on using seaweed as a fertilizer back in the 60s and 70s. Seaweed feed has been well studied and has become a mainstay of organic farming and gardening. Assists in pest control of insects, soil nematodes.Alleviates disease, bacterial and fungal.Imparts stress tolerance, drought, salinity and frost.Retards senescence, extends product shelf life.Promotes earlier flowering, fruit set and uniformity of fruit.Improves plant vigor, root development, chlorophyll synthesis.Here are some of the benefits of fertilizing with seaweed, from a paper called ‘Seaweed extract stimuli in plant science and agriculture’ ( Source): These record-breaking watermelon were grown with my liquid seaweed fertiliser and liquid fish.
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