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Water smartweed
Water smartweed
Water smartweed
Water smartweed
Water smartweed
Water smartweed
Add to My Garden
Water smartweed
Persicaria amphibia
Also known as: Longroot smartweed
A perennial, water smartweed grows in slow-moving water. It can grow in, near, or under water with the leaves floating on the surface. Its seed serves as a food source for ducks and other fowl.
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Full sun
Sunlight
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Flower Color
Flower Color
Pink
Bloom Time
Bloom Time
Late spring, Summer, Fall
Leaf Color
Leaf Color
Green
distribution

Distribution Map

Habitat

Shorelines, wet prairies, swamps, ponds, and quiet streams, in mud or floating on still fresh water
distribution map
Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
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Questions About Water smartweed

Pruning Pruning Pruning
Do I Need to Prune My Water smartweed?
Water smartweed does not need a lot of maintenance including pruning, which is part of what makes it such a popular choice. Most often, Water smartweed is pruned to remove damaged or dead branches. You may also choose to remove some branches to improve the appearance of the Water smartweed or to improve clearance under it. If there are branches that are very crowded together, air flow may be restricted. Any branches that are rubbing together could wear away the bark and allow disease or insects to penetrate the Water smartweed, so those branches are also good candidates for pruning.
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How to Prune Water smartweed?
The first step is deciding where to cut. It is a good idea to identify which branches you want to prune before taking other steps so you know which tools you need and have a plan from the beginning. You may want to mark branches with string or tape so you don’t forget where you had planned to prune each branch.

After you have decided where to cut, prepare the tools. Many Water smartweed branches are thin and delicate, so you may be able to use regular pruning shears. If there are larger branches, you should use loppers or a pruning saw. A pole saw may be necessary if the branches are higher up. Your cutting implement should be sterilized with disinfectant or a diluted bleach solution before use and between cuts to avoid introducing pathogens to the wound when pruning. Also be sure to wear protective gear to avoid injuring yourself during this process.

Removing large branches (structural pruning) from your Water smartweed is best done during the dormant period in the winter, while late winter or early spring is the best time for minor maintenance pruning. The ideal timing is when the Water smartweed has developed buds but the buds have not opened yet. This timing makes it easy for you to find which branches are not productive and should be removed, since those branches won’t have any buds. Pruning at the beginning of the growing season allows the plant to have the whole summer to devote to putting new growth into the remaining branches, flowers, and leaves.

You can also prune it into a shape you like, but don't prune over 1/4 of the healthy branches and leaves of the Water smartweed. Over pruning will hinder the normal and healthy growth of this plant. Please make sure that the cuts are clean and tidy.

When Water smartweed grows, if there is aging yellowing leaves and diseased leaves, you need to prune the bottom of the yellowing aging leaves and leaves with spots caused by the infection of disease. Pruning can effectively reduce the infection of disease. Even if the number of leaves with infections is relatively large, you should not prune more than 30% of the total number of leaves to avoid affecting the growth of Water smartweed.
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What Tips You Should Be Aware About When Pruning Water smartweed?
Remove no more than 30% of the volume of the Water smartweed when pruning. Pruning too much at once can leave the Water smartweed vulnerable to shock. This plant does not tolerate being cut back severely and may not recover. Don’t prune young Water smartweed unless it is to remove a dead or damaged branch.

In between cuts, step back and check the appearance of the Water smartweed and be sure that you are satisfied with the progress. If you trim too much at once, there’s no way to restore the cut branches, so be conservative with your approach. One of the charms of Water smartweed is its graceful, natural appearance, so you may want to embrace some of the “imperfections” inherent to how it grows.
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When Should I Prune Your Water smartweed?
Removing large branches (structural pruning) from the Water smartweed is best done during the dormant period in the winter, while late winter or early spring is the best time for minor maintenance pruning. The ideal timing is when the Water smartweed has developed buds but the buds have not opened yet. This timing makes it easy for you to find which branches are not productive and should be removed, since those branches won’t have any buds. Pruning at the beginning of the growing season allows the Water smartweed to have the whole summer to devote to putting new growth into the remaining branches, flowers, and leaves.
You can also prune it into a shape you like, but don't prune over 1/4 of the healthy branches and leaves of the Water smartweed. Over pruning will hinder the normal and healthy growth of this plant. Please make sure that the cuts are clean and tidy.

When Water smartweed grows, if there is aging yellowing leaves and diseased leaves, you need to prune the bottom of the yellowing aging leaves and leaves with spots caused by the infection of disease. Pruning can effectively reduce the infection of disease. Even if the number of leaves with infections is relatively large, you should not prune more than 30% of the total number of leaves to avoid affecting the growth of Water smartweed.
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Related Plants

Grassleaf spurge
Grassleaf spurge
Grassleaf spurge (Euphorbia graminea) is an annual spurge that can grow to 1.5 m wide. Native to South America, it has been found growing in many southern states in the United States. Commonly found growing wild in hammocks and lawns in warmer climates. Considered a weed in most regions, its seeds pop open and are widely dispersed.
Eyebane
Eyebane
Eyebane is a weedy annual also known as nodding spurge or Euphorbia nutans. It grows small clusters of cup-shaped white flowers. Like all other species of euphorbia, this plant has a sap that is toxic.
Madeira-vine
Madeira-vine
Madeira-vine is a common weed but also a source of food. Its underground tubers and thick fleshy leaves are edible when cooked. However, the bulbils, or aboveground tubers, are not edible. This heavy vine can smother trees and shrubs.
Fourleaf manyseed
Fourleaf manyseed
Fourleaf manyseed (Polycarpon tetraphyllum) is an annual herb that thrives in sandy or coastal soils. It gets its common name because it grows in a four-leaf pattern and produces quite a lot of seeds. Native to southern Europe and introduced elsewhere. The plant flowers in spring and summer.
Manybristle chinchweed
Manybristle chinchweed
The manybristle chinchweed, known scientifically as the Pectis papposa, is native to the southwestern US and Mexico. It grows low and small, covering the ground in individual little plants with relatively large flowerheads blooming a golden yellow for half the year. They are aromatic, with a heavy, lemony scent. This species hosts beet leafhopper insects.
Apple of Sodom
Apple of Sodom
Apple of Sodom, or Calotropis procera, is an extremely poisonous plant. The fruit of this plant ripens and bursts, causing the seeds to scatter. In Jamaica, the fibers inside of the fruit are collected and used to stuff pillows.
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About
More Info
Distribution
Care FAQ
Related Plants
Related Articles
Water smartweed
Water smartweed
Water smartweed
Water smartweed
Water smartweed
Water smartweed
Add to My Garden
Water smartweed
Persicaria amphibia
Also known as: Longroot smartweed
Sunlight
Full sun
Sunlight
plant_info

More Info

Flower Color
Flower Color
Pink
Bloom Time
Bloom Time
Late spring, Summer, Fall
Leaf Color
Leaf Color
Green
distribution

Distribution Map

Habitat

Shorelines, wet prairies, swamps, ponds, and quiet streams, in mud or floating on still fresh water

Map

distribution map
Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
question

Questions About Water smartweed

Pruning Pruning Pruning
Do I Need to Prune My Water smartweed?
more
Free
How to Prune Water smartweed?
more
lock
What Tips You Should Be Aware About When Pruning Water smartweed?
more
lock
When Should I Prune Your Water smartweed?
more
lock
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Most Common Herb
# Useful Tips
Most Common Herb
Best Perennial Plant to Grow
# Useful Tips
Best Perennial Plant to Grow
Best Perennial Plant to Grow
# Useful Tips
Best Perennial Plant to Grow
Most Common Herb
# Useful Tips
Most Common Herb
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