Seaweed in the garden?

A few weeks ago after a storm, while wandering along the beach at Roberts Creek I noticed several people harvesting kelp left by the high tides.
Curious as to why they would be doing this, I started up a conversation with a windswept bystander. He explained that the kelp was highly coveted by the locals for use as a garden mulch and that it was very rich in nitrogen.
As a novice, trying to garden as organically as possible I thought I’d do a little research into all this and this is what I’ve found:
First, a quick guide:
Appearance: Poor
Insulation: Good; recommended as a winter mulch
Cost: Low in coastal areas
Thickness: 4-6 in.
Weed Control: Excellent
Water Penetration: Fair
Moisture Retention: Good
Decomposition Speed: Slow; adds nitrogen and potash
Comments: Provides sodium, boron and other trace elements. Excellent for sheet composting.
Most homeowners live a distance from the sea. But horticultural research suggests that they should bring a part of the sea to their yards and gardens–in the form of a seaweed or kelp product –to enhance the beauty and health of their plants. Read the rest of this entry »








