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Water celery with long green leaves underwater

Samuel A Schmid / CC BY 4.0, via Wikimedia Commons

Hydrocharitaceae26 April 202612 min

Water celery: complete guide

Vallisneria americana

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Overview

Vallisneria americana, commonly called water celery, eelgrass, or tape grass, is an aquatic plant from North America. This plant grows underwater and is valuable for aquariums, garden ponds, and water reservoirs. It is a vigorous grower that improves water quality and strengthens food supplies for aquatic animals. This is a classic aquarium plant.

Appearance and growth

The water celery grows as long, narrow green leaves that can reach 30 to 150 centimeters long. The plant forms dense clusters of leaves growing from the bottom toward the water surface. In aquariums it grows rapidly and can even grow above water. The plant spreads via runners and fragmentation. This makes it very productive.

Ideal location

Vallisneria americana thrives in both shallow and deeper water areas. For aquariums, place it in sunny to part shade locations. In ponds it grows best in locations with at least 4 to 6 hours of sunlight. In fast-moving water it grows more slowly. Shelter helps growth.

Soil

The water celery grows well in virtually all substrates: sand, silt, and mud. A nutrient-rich substrate significantly stimulates growth. In aquariums, a gravel or sand bedding can be used. The plant can also grow in pure water without substrate, although growth is then slower. Nutrients are important.

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Water

This is an aquatic plant so it doesn't require traditional watering. In aquariums ensure clean, filtered water. Regular water changes (20-30 percent per week) help maintain water quality. The plant tolerates a broad pH range (5 to 8.8). Temperature should be 15 to 28 degrees Celsius.

Pruning

Pruning consists of removing long, wilted, or damaged leaves. This stimulates new growth. Remove excess plants to prevent overgrowth in aquariums. Regular removal keeps the growing area healthy. This also helps other plants.

Maintenance calendar

Year-round: Constant growth if conditions are good. Months with more sun: faster growth in external ponds. Summer: Peak growth in natural ponds. Winter: Slower growth in cold conditions. In aquariums growth is steady year-round.

Winter hardiness

Vallisneria americana is not frost-resistant. In temperate regions it grows only in heated aquariums or warm water areas. Outdoors it may survive very mild winters in deep water where ice does not reach the bottom.

Ecological value

The water celery is valuable as an oxygen producer in aquariums and ponds. It is food for waterfowl and muskrats. The plant contributes to water purification through nutrient removal. Ideal for aquariums with small fish. This helps ecosystem health.

Closing

Vallisneria americana is a practical and attractive water plant for aquariums and warm water systems. With rapid growth and water purifying properties, it is worth recommending for water systems. Explore more aquatic plants on gardenworld.app.

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