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Add to My Garden Whorled yellow loosestrife
Lysimachia quadrifolia
Also known as: Whorled loosestrife, Crosswort
Whorled yellow loosestrife, or Lysimachia quadrifolia, is a member of the Primrose family. This perennial has star-shaped, yellow blooms with red accents. Some say that early colonists in Sicily fed these plants to oxen, so they would work together more peacefully.
4a to 8b
Hardiness Zones
More Info
Plant Type
Herb
Bloom Time
Late spring, Summer, Early fall
Leaf Color
Green
Blue
Scientific Classification
Phylum
Vascular plants Class
Dicotyledons Order
Heathers and allies Family
Primrose Genus
Loosestrifes Species
Whorled yellow loosestrife 
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Distribution Map
Habitat
Fens, moist prairies
Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
Questions About Whorled yellow loosestrife
Watering 
Sunlight 
Temperature What is the best way to water my Whorled yellow loosestrife?
When watering the Whorled yellow loosestrife, you should aim to use filtered water that is at room temperature. Filtered water is better for this plant, as tap water can contain particles that are harmful to its health. The reason that the water should be at room temperature or slightly warmer is that the Whorled yellow loosestrife comes from a warm environment, and cold water can be somewhat of a shock to its system. Also, you should avoid overhead watering for this plant, as it can cause foliage complications. Instead, simply apply your filtered room temperature water to the soil until the soil is entirely soaked. Soaking the soil can be very beneficial for this plant as it moistens the roots and helps them continue to spread through the soil and collect the nutrients they need.
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What should I do if I water my Whorled yellow loosestrife too much or too little?
Both overwatering and underwatering will be detrimental to the health of your Whorled yellow loosestrife, but overwatering is a far more common issue. When this species receives too much water, its stems and leaves may begin to wilt and turn from green to yellow. Overwatering over a prolonged period may also lead to diseases such as root rot, mold, and mildew, all of which can kill your plant. Underwatering is far less common for the Whorled yellow loosestrife, as this plant has decent drought tolerance. However, underwatering remains a possibility, and when it occurs, you can expect to find that the leaves of your Whorled yellow loosestrife have become brittle and brown.
It is crucial that you notice the signs of overwatering as soon as possible when caring for your Whorled yellow loosestrife. Some of the diseases that arise from overwatering, such as root rot, may not be correctable if you wait too long. If you see early signs of overwatering, you should reduce your watering schedule immediately. You may also want to assess the quality of soil in which your Whorled yellow loosestrife grows. If you find that the soil drains very poorly, you should replace it immediately with a loose, well-draining potting mix. On the other hand, if you find signs that your Whorled yellow loosestrife is receiving too little water, all you need to do is water more regularly until those signs have subsided.
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How often should I water my Whorled yellow loosestrife?
If your plant is in a pot. The most precise way to decide whether your Whorled yellow loosestrife needs water is to plunge your finger into the soil. If you notice that the first two to three inches of soil have become dry, it is time to add some water.
If you grow your Whorled yellow loosestrife outdoors in the ground, you can use a similar method to test the soil. Again, when you find that the first few inches of soil have dried out, it is time to add water. During the spring and early fall, this method will often lead you to water this plant about once every week. When extremely hot weather arrives, you may need to increase your watering frequency to about twice or more per week. With that said, mature, well-established the Whorled yellow loosestrife can show an admirable ability to withstand drought.
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How much water does my Whorled yellow loosestrife need?
When it comes time to water your Whorled yellow loosestrife, you should not be shy about how much water you give. With the first two to three inches of soil dry, this plant will appreciate a long and thorough watering. Supply enough water to soak the soil entirely. The amount of water you add should be enough to cause excess water to flow through the drainage holes at the bottom of your pot. If you don’t see excess water draining from the pot, you have likely underwatered your plant. But do not let the water accumulate inside the soil, which will be very dangerous to the plant as well. Alternatively, a lack of water draining through the pot could indicate poorly draining soils, which is detrimental to the health of this plant and should be avoided. If the plant is outside, 1 inch of rain per week will be sufficient.
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How should I water my Whorled yellow loosestrife at different growth stages?
The water needs of the Whorled yellow loosestrife can change depending on growth stages as well. For example, when your Whorled yellow loosestrife is in the first few years of its life, or if you have just transplanted it to a new growing location, you will need to give more water than usual. During both of those stages, your Whorled yellow loosestrife will put a lot of energy towards sprouting new roots that will then support future growth. For those roots to perform their best, they need a bit more moisture than they would at a more mature phase. After a few seasons, your Whorled yellow loosestrife will need much less water. Another growth stage in which this plant may need more water is during the bloom period. Flower development can make use of a significant amount of moisture, which is why you might need to give your Whorled yellow loosestrife more water at this time.
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How should I water my Whorled yellow loosestrife through the seasons?
The Whorled yellow loosestrife will have its highest water needs during the hottest months of the year. During the height of summer, you may need to give this plant water more than once per week, depending on how fast the soil dries out. The opposite is true during the winter. In winter, your plant will enter a dormant phase, in which it will need far less water than usual. In fact, you may not need to water this plant at all during the winter months. However, if you do water during winter, you should not do so more than about once per month. Watering too much at this time will make it more likely that your Whorled yellow loosestrife will contract a disease.
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What's the difference between watering my Whorled yellow loosestrife indoors and outdoors?
It is most common to grow the Whorled yellow loosestrife indoors for any gardener that does not live in temperate and tropical regions. Those gardeners should consider the fact that soil in a container can dry out a bit faster than ground soil. Also, the presence of drying elements such as air conditioning units can cause your Whorled yellow loosestrife to need water on a more frequent basis as well. if you planted it outside. When that is the case, it’s likely you won’t need to water your Whorled yellow loosestrife very much at all. If you receive rainfall on a regular basis, that may be enough to keep your plant alive. Alternatively, those who grow this plant inside will need to water it more often, as allowing rainwater to soak the soil will not be an option.
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More Info
Distribution
Care FAQ
Related Plants
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Add to My Garden Whorled yellow loosestrife
Lysimachia quadrifolia
Also known as: Whorled loosestrife, Crosswort
Whorled yellow loosestrife, or Lysimachia quadrifolia, is a member of the Primrose family. This perennial has star-shaped, yellow blooms with red accents. Some say that early colonists in Sicily fed these plants to oxen, so they would work together more peacefully.
4a to 8b
Hardiness Zones
More Info
Plant Type
Herb
Bloom Time
Late spring, Summer, Early fall
Leaf Color
Green
Blue
Scientific Classification
Phylum
Vascular plants Class
Dicotyledons Order
Heathers and allies Family
Primrose Genus
Loosestrifes Species
Whorled yellow loosestrife 
Find your perfect green friends.
Plan your green oasis based on your criteria: plant type, pet safety, skill level, sites, and more.
Download the App
Distribution Map
Habitat
Fens, moist prairies
Map
Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
Questions About Whorled yellow loosestrife
Watering Sunlight Temperature What is the best way to water my Whorled yellow loosestrife?
What should I do if I water my Whorled yellow loosestrife too much or too little?
How often should I water my Whorled yellow loosestrife?
How much water does my Whorled yellow loosestrife need?
How should I water my Whorled yellow loosestrife at different growth stages?
Show More ![more]()
Get tips and tricks for your plants.
Keep your plants happy and healthy with our guide to watering, lighting, feeding and more.
Download the App
More Questions People Also Ask
Related Plants
Related Articles
Most Common Herb
# Useful Tips
Best Perennial Plant to Grow
# Useful Tips
Best Perennial Plant to Grow
# Useful Tips
Most Common Herb
# Useful Tips
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80+ scholars in botany and gardening
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