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How does a bullfrog tadpole grow into a frog? | Ponds & Lakes Q&A

How does a bullfrog tadpole grow into a frog?

Q: How does a bullfrog tadpole grow into a frog?

Dan – Clovis, CA

A: What would a pond or lake be without bullfrogs? These croaking amphibians – which can grow to 8 inches in length and weigh up to 1½ pounds – reside near water sources, like lakes, ponds, rivers and bogs. The brown-green frogs with the scientific name Lithobates catesbeianus prefer warm, still, shallow water.

Through their seven- to nine-year life cycle, bullfrogs pass through several stages of development. Ever wonder what happens during those stages? Keep reading, because here’s what you need to know.

From Eggs to Tadpoles

Bullfrog breeding, which happens externally, takes place in May to July in the north and from February to October in the south. The female adult bullfrog, which sports a white throat during the mating season, deposits as many as 20,000 eggs in a foamy film in quiet, protected waters; the male, which has a yellow throat during mating rituals, then fertilizes them. Four days later, tiny tadpoles emerge. The little guys are able to fend for themselves right away and will stay in their tadpole stage for almost three years before transforming into adults.

Pollywog Waltz

While they’re in their tadpole – or pollywog – stage, the tiny gilled critters live exclusively in the water and nibble on water plants for nourishment. At first, their bodies, which can measure up to 6¾ inches long, are long and narrow and include a tail where they store fat when food is in short supply during the winter months. After about one year, the tadpoles will start to grow legs. Shortly thereafter, they grow arms. And then, their tails shorten, they develop lungs, and their gills disappear. The tadpoles have transformed into froglets.

From Aquatic to Terrestrial

After that two- to three-year tadpole-to-frog developmental period, the bullfrog ’s final growth stage is when the froglet hops from the water to dry land. Thanks to its fully developed lungs, the now-carnivorous and aggressive frog can now breathe oxygen, and that gives it the freedom to emerge from its watery first home to the shore where it can hunt for anything that will fit in its mouth, including insects, small mammals, birds, fish and other frogs. The adult bullfrog rests by day, and defends and hunts its 3 to 25 meters of shoreline territory by night.

Finally, after three to five long years of growth and development, the tadpole has become an adult bullfrog and reached sexual maturity – and the life cycle begins again. Bullfrogs in the wild live to about 7 to 9 years old; in captivity, they can live as long as 13 years.

Now the next time you hear your bullfrogs croaking, you’ll have a new appreciation for them!

Pond Talk: What’s your favorite part of having bullfrogs in your lake or pond?

Do I need to fertilize my aquatic plants? | Decorative Ponds & Water Gardens Q & A

Do I need to fertilize my aquatic plants?

Q: Do I need to fertilize my aquatic plants?

Bruce – Taneytown, MD

A: If your aquatic plants look lackluster, aren’t as lush as you’d like or are failing to produce those show-stopping blooms, they might need a little help – and that’s where fertilizers come to the rescue.

Whether we’re talking about plants in your water garden or vegetable garden, the soil they’re living in provides them with nutrients that they take up through their root systems. If you have your plants in pots or if they’ve been in the ground for some time, the soil will need a boost of plant food. Adding fertilizer will encourage quicker growth in new and established plants, and it will deliver enough nutrients for the plants to form those colorful blooms.

So what kind of fertilizer should you use? There are three basic types to choose from:

Spikes: Fertilizer spikes, like Laguna Plant Grow Fertilizer Spikes, slowly release plant food over the course of one year – making 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.

Liquids: Liquid fertilizers, like Microbe-Lift® Bloom & Grow Aquatic™ Plant Supplement, add micro- and macronutrients to plants through the water rather than soil. These supplements, which need to be added to the pond water once or twice a week during the plants’ growing season, help produce brighter, faster blooms and healthier, stronger roots. The liquid fertilizers are safe to use around fish, but unsafe if the water is intended for human consumption.

No matter which form you choose, make sure it has no or low levels of phosphates, which fuel algae growth. You want your plants to grow – not the green water, right?

Pond Talk: What’s your preferred form of fertilizer?

Laguna Plant Grow Fertilizer Spikes - Maximize Plant Size & Color

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