If you’re looking for an easy – and even free – way to supercharge your garden this spring, take a tip from coastal gardeners. Use seaweed. Packed with essential nutrients like nitrogen, phosphorus, potassium, and trace minerals such as iron, zinc, and magnesium, seaweed is a powerhouse soil enhancer that can help your plants grow stronger, healthier, and more productive.
Beyond its rich mineral content, seaweed naturally contains plant growth hormones that promote faster root development and boost plant resilience. It also acts as a built-in pest repellent—its salty, rough texture deters slugs and other garden pests, keeping your crops safe without harmful chemicals. Simply lay seaweed around the base of plants as mulch, avoiding direct contact with stems, and let nature do the rest.
For an extra nutrient boost, try making seaweed fertilizer spray. Just soak seaweed in water for a few days to create a nutrient-rich liquid feed—perfect for tomatoes, cucumbers, leafy greens, apple trees, berries, and citrus plants.
If you don’t live near the coast, no worries! Many garden centers sell dried or liquid seaweed fertilizers. Many brands offer easy-to-use products that enhance soil microbial activity, improve soil structure, and help plants withstand drought, heat, and frost.
Whether you gather it yourself or buy it in-store, seaweed is an age-old gardening secret that can help you grow a thriving, pest-resistant garden with bigger, healthier harvests this year!
