Fertilize marginal pond plants in the spring as they begin actively growing. Use a slow-release fertilizer specifically designed for aquatic plants, such as Aquascape Once-A-Year Pond Plant Fertilizer.
For established marginal plants:
- Use Once-A-Year Pond Plant Fertilizer Capsules.
- Push the capsules at least 4 in. (10 cm) into the soil near the plant's roots.
- Cover the capsules with soil and follow the recommended dosage based on planter size.
For newly potted marginal plants:
- Add a layer of soil to the bottom of the planter.
- Spread the recommended amount of Once-A-Year Pond Plant Fertilizer granules evenly over the soil.
- Add the plant, fill with additional soil, and top with gravel.
Aquascape Once-A-Year Pond Plant Fertilizer provides nutrients for up to 180 days and only needs to be applied once per growing season.