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How many plants do I need in my pond, and do I need to fertilize them? | Decorative Ponds & Water Gardens Q & A

Q: How many plants do I need in my pond, and do I need to fertilize them?

Q: How many plants do I need in my pond, and do I need to fertilize them?

Cynthia – Bishop, CA

A: A good mix of aquatic plants does more than beautify your water garden. The marginal, floating and submerged plants, such as those found in our Aquatic Plant Packages, also absorb excess nutrients in the water and shade the pond’s surface, which can help prevent algae attacks and protect your finned friends from hungry herons and raccoons.

When planting aquatic plants in and around your pond, you should ideally have 40 to 60 percent of your water garden’s surface covered with floating aquatic plants, like hardy water lilies, water hyacinth and water lettuce. This allows for enough nutrient absorption and shading to prevent algae from gaining a foothold in your pond.

Just like the plants in your vegetable garden, those lilies and bog plants need some nutrients added to their soil to thrive. Here’s what we recommend:

  • Spikes: Fertilizer spikes, like Laguna Plant Grow Fertilizer Spikes, slowly release plant food, which makes them super easy to use. The balanced nutrients in the spikes encourage both foliage and root growth and flower production, while the low phosphorous and no copper formula ensure no adverse effects on water quality or fish and plant life. You simply push the spike into the soil (one for every 1 to 2 gallons of planting container space) and forget about it until next year.
  • Tabs: Tabs, like TetraPond® LilyGro™ Aquatic Plant Food, are formulated for use during your aquatic plants’ growing season. As with the spikes, the nutrients in the fertilizer encourage greenery and bloom production, but the tabs need to be added to the soil monthly for best results. Using one tablet per gallon of potted soil, push it deep into the soil 3 inches from the crown of the plant and pack the hole with dirt to prevent the fertilizer from being released into the water.

During the growing season, plan to fertilize your water lilies and marginal plants once per month. Floating and submerged plants should have plenty of nutrients in the water to feed them. Enjoy your blooms!

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Should I add submerged plants to my Water Garden? | Decorative Ponds & Water Gardens Q&A

Should I add submerged plants to my Water Garden?

Should I add submerged plants to my Water Garden?
Stacey – Grand Rapids, MI

Let’s face it: floating and surface plants, like lilies and hyacinths, are the rock stars of any water garden. They’re the show-offs, the preeners, the colorful ones that visitors “ooh” and “aah” over; the divas that pond owners proudly feature on center stage.

But, may we ask, where would the rock star be without his support crew – the techies, the roadies, the groupies? Still playing air guitar in front of his mirror, that’s where. Lilies, hyacinths and the like just happen to be the most visible and attractive feature of a supportive ecosystem that should include their plainer relatives – the Submerged plants, like Vallisneria, Red Ludwigia, Hornwort and Parrot’s Feather. These worker plants compete with algae for the nitrogen produced by decaying plants and fish waste,produce oxygen to help keep the pond properly aerated,andprovide shade and shelter for koi and other fish. Submerged plants may not be flashy, but they’re a critical component in maintaining water quality and general pond health.

The easiest way to add one of these workers to your water garden is to plant its stems in a Laguna Submersible Pond Planting Basket along with an ample supply of Microbe-Lift® Aquatic Planting Media, and place it on the bottom of the pond. The baskets come in various sizes with mesh sides and bottoms – this allows the plant to seek nourishment outside the basket, without the risk of growing out of control.

Any performer will tell you that a well-fed support crew is a happy support crew. So to make sure your Submerged plants are getting the nutrition they need, we highly recommend the Laguna Temperature Activated Aquatic Fertilizer Spikes, a verbal mouthful that also delivers the goods. Simply push a spike into to the soil near the plant until the cap is just above the surface and you’re all set for a year.

So, by all means, add Submerged plants to your water garden and let your lilies rock on!

Pond Talk: Do you utilize submerged plants in your pond?

Submerged Plants for Decorative Ponds & Water Gardens

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