Phlox: The Complete Guide to Growing this Colorful Delight

Table of Contents


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If you’re looking for a stunning addition to your garden, look no further than Phlox drummondii. This beautiful flowering plant is a favorite amongst gardeners for its vibrant colors and easy-to-grow nature. In this complete guide, we’ll delve into everything you need to know to successfully grow Phlox and make your garden pop with color.

Benefits of Growing Your Own Phlox (Phlox drummondii)

Benefits of Growing Phlox (Phlox drummondii) at Home:

  • Produces beautiful, colorful flowers in shades of pink, red, purple, and white
  • Attracts pollinators, such as butterflies and hummingbirds, to your garden
  • Easy to grow and care for, making it a great option for beginners
  • Can be grown in containers or in the ground
  • Perennial variety will come back year after year
  • Can be used as a cut flower to brighten up your home
  • Helps to purify the air around your home
  • Provides a sense of satisfaction and relaxation through gardening

General Information About Phlox (Phlox drummondii)

Plant Family: Polemoniaceae
Plant Latin Name: Phlox drummondii

Plant Variations Available

Phlox (Phlox drummondii) is a beautiful and versatile flowering plant that is commonly known for its ability to add vibrant colors to any garden or landscape. With a range of varieties available, this species can bloom in various shades of white, pink, red, and purple.


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One of the most notable variations of Phlox drummondii is the Phlox drummondii Cherry Caramel. This cultivar features striking blooms that range from a deep burgundy to soft pinkish-orange shades. The Cherry Caramel can grow up to 12 inches in height and is incredibly heat resistant.

Another variety that is popular among gardeners is called the Phlox drummondii Candy Stripe. As the name suggests, the Candy Stripe has beautiful, candy-colored stripes running down its petals that range from shades of pink to white. This cultivar can grow up to 24 inches in height and has a sweet fragrance, making it a great addition to any garden.

The Phlox drummondii Blue Bedder is a standout variation known for its bright blue blossoms. This cultivar typically grows to about 8-12 inches in height and is a great option for gardeners looking to add a pop of vibrant blue color to their landscape.

Finally, the Phlox drummondii Starry Eyes is a charming variety that features unique star-shaped blooms in shades of white and pink. This cultivar typically reaches heights of about 8-12 inches and is a beautiful addition to any garden or landscape.


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Regardless of the specific variety chosen, Phlox drummondii is a beautiful and easy-to-grow plant that is sure to add a burst of color and charm to any outdoor space.

Germinating Phlox (Phlox drummondii)

Preferred Zones

Phlox, also known as Phlox drummondii, is a beautiful and hardy flowering plant that is perfect for outdoor growing. When it comes to choosing the best zones for growing Phlox, it’s important to consider the temperature and climate.

The ideal temperature range for Phlox growth is between 60-70 degrees Fahrenheit, although it can tolerate temperatures up to 85 degrees Fahrenheit. This makes it suitable for growing in a wide range of zones.

However, if you live in a warmer climate, it’s important to choose a zone that has enough shade and protection from the midday sun. Zones 4-8 are generally the best zones for growing Phlox, as they provide enough warmth for the plant to thrive while also offering some cooler weather and mild frost in the winter months.

If you’re looking to grow Phlox in your garden, make sure to choose a spot with well-draining soil and good sunlight exposure. It’s a great option for adding color and fragrance to your outdoor space, and it’s a relatively low maintenance plant that requires minimal upkeep.

So whether you’re looking to add some vibrant color to your garden or just want to enjoy the fragrance of fresh blooms, Phlox is a great choice for outdoor growing in zones 4-8.

Sowing Instructions

If you’re looking for a beautiful, easy-to-grow plant that will add a splash of color to your garden, Phlox (Phlox drummondii) is an excellent choice. Sowing Phlox seeds is a straightforward process that even beginner gardeners can handle. Here are some tips on the best methods and procedures for sowing Phlox:

1. Choose the Right Time: The best time to sow Phlox seeds is in the spring, after the last frost has passed. This will give the seeds enough time to germinate and establish themselves before the hot summer months arrive.

2. Select the Perfect Location: Phlox prefers full sun to partial shade and well-draining soil. Choose a spot in your garden that gets at least 6 hours of direct sunlight per day and has soil that drains well.

3. Prepare the Soil: Before sowing the seeds, it’s important to prepare the soil by digging it up and removing any weeds or rocks. If your soil is heavy and clay-like, you can add some organic matter like compost or peat moss to improve drainage.

4. Sow the Seeds: Once the soil is prepared, you can sow the Phlox seeds. Sprinkle them on the soil surface and lightly press them into the soil. Keep the seeds about 12 inches apart to allow room for growth.

5. Water and Care for the Seeds: After sowing, water the seeds gently to avoid washing them away. Keep the soil moist but not waterlogged until the seeds have germinated. Once the seedlings appear, you can reduce the frequency of watering. Fertilize the plants with a balanced fertilizer every 4-6 weeks.

6. Harvest the Flowers: In about 8-10 weeks, your Phlox should start flowering. You can harvest the flowers when they are fully open by cutting them at the base of the stem. This will encourage the plant to produce more flowers.

In conclusion, sowing Phlox seeds is an easy and rewarding activity that can add a splash of color to your garden. By selecting the right location, preparing the soil, sowing the seeds properly, and taking care of the seedlings, you can enjoy beautiful Phlox blooms all summer long.

Preparation Advice

If you’re thinking about growing Phlox (Phlox drummondii), congratulations! This beautiful flower is highly valued for its vibrant blooms and lush foliage.


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First things first, you will need the right equipment. To ensure the health and longevity of your Phlox, start with a good quality potting mix that is well-draining but retains moisture. You will also need a pot or planting bed with good drainage in order to prevent water buildup and root rot.

Next, consider the environment. Phlox plants thrive in full sun or partial shade, with regular watering and slightly acidic soil. If you live in an area with harsh winters, consider starting your Phlox indoors and transplanting them outside once the weather warms up.

When it comes to planting Phlox, it’s important to space them out well to prevent overcrowding. Plant them about 6-8 inches apart for optimal growth. You can also add a layer of organic mulch around the base of the plant to retain moisture and prevent weeds from competing for nutrients.

Pruning is also an important part of Phlox care. Deadheading spent flowers encourages new growth and keeps the plant looking fresh. Additionally, you will want to prune back the plant in late summer or early fall to help it prepare for dormancy.

With the right equipment and a little bit of know-how, growing Phlox can be a rewarding and beautiful experience. Happy planting!

Germination Tools and Equipment

If you’re looking to grow Phlox (Phlox drummondii) from seed, there are a few tools and equipment that can help ensure healthy germination. Here are some of the best ones to consider:

1. Seed starter trays or pots: Phlox seeds can be started indoors or outdoors, but starting them indoors can give them a better chance of survival. Seed starter trays or pots are a great option to sow your seeds in, as they provide the proper moisture retention and drainage necessary for germination.


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2. Seed starting soil: A high-quality seed starting soil will ensure that your Phlox seeds have the nutrients they need to thrive. Avoid using regular garden soil, as it can be too dense for young seedlings to break through.

3. Grow lights: Providing adequate lighting for your seedlings is essential for healthy growth. While natural light is preferred, it may not always be available depending on your location or season. Grow lights can help supplement the light your seedlings need to thrive.

4. Watering can or spray bottle: Germinating Phlox seeds require consistent moisture, but it’s important not to overwater them. Using a watering can or spray bottle can help you control the amount of water your seedlings receive.

5. Humidity dome: A humidity dome can help create a controlled environment for your Phlox seeds, giving them a better chance of germinating. This tool can help maintain proper moisture levels and prevent seedlings from drying out.


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By using these tools and equipment, you can give your Phlox seeds the best chance at healthy germination and growth. Remember to be patient and consistent with their care, and soon you’ll have beautiful Phlox flowers in your garden.

Growing Phlox (Phlox drummondii)

Light Requirements

Phlox (Phlox drummondii) can grow well under a wide range of lighting conditions depending on the variety. Generally, this plant prefers full sun to partial shade, meaning that a minimum of 6 hours of direct sunlight is ideal for optimal growth. However, too much direct sunlight can cause the plant to dry out and wilt, so it is important to provide shade during the hottest time of day.

If you are growing phlox indoors or in an area with limited sun exposure, you can use artificial lighting to supplement natural light. A fluorescent or LED grow light set up a few inches above the plants can provide the necessary illumination for a healthy growth rate. Generally, you should aim to provide 15 to 16 hours of light daily for phlox plants.

If you notice that your phlox is not flowering or growing as expected, it could be due to insufficient sunlight or light duration. It is important to understand that phlox is a light-sensitive plant that reacts to changes in light intensity and duration. Therefore, it is crucial to monitor and adjust the lighting conditions accordingly to ensure healthy growth.

In summary, phlox plants require adequate lighting conditions to thrive. They prefer full sun to partial shade and can also benefit from artificial lighting if natural sunlight is limited. However, it is important to monitor and adjust lighting conditions to ensure the health and growth of the plant. Keep these tips in mind, and you’ll have a beautiful and thriving phlox garden!

Temperature Requirements

When it comes to growing healthy Phlox, the temperature requirements can make or break your success. As this plant is native to North America, it flourishes in warmer, temperate climates typically found in the southern or central parts of the country. Phlox is a sun-loving plant that requires full to partial sunlight to thrive, and temperatures that fall within a specific range.

During the growing season, Phlox requires temperatures that range from 60 to 65 degrees Fahrenheit (15 to 18 degrees Celsius) at night and 70 to 75 degrees Fahrenheit (21 to 24 degrees Celsius) during the day. This temperature range allows for optimal growth, and ensures that your Phlox produces the beautiful, fragrant flowers it’s known for.

If the temperature gets too hot or too cold, Phlox growth will suffer. High temperatures may cause the plant to wilt or droop, and can lead to smaller, less robust flowers. Conversely, if temperatures drop too low, Phlox growth will slow or halt entirely, jeopardizing the plant’s health and viability.

It’s important to note that Phlox can also thrive in cooler temperatures, so long as they don’t dip below freezing. If you live in a colder climate, consider planting your Phlox in a greenhouse, or providing it with some form of insulation during the winter months to keep it healthy and happy.


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In summary, keeping a consistent temperature range of 60 to 75 degrees Fahrenheit (15 to 24 degrees Celsius) is vital to the success of Phlox. By providing this plant with the right environmental conditions, you can enjoy bright, fragrant blooms all season long.

My Favorite Tools For Growing Phlox (Phlox drummondii)

Caring for Phlox can be a truly beautiful experience, and with the right tools and equipment, you can enjoy a beautiful, healthy garden full of these delightful flowers! Here are some of the best tools and equipment you’ll need to keep your Phlox thriving:

1. Quality soil: Phlox thrives in rich, well-draining soil that is slightly acidic. Make sure to prepare your soil by adding lots of organic matter like compost or aged manure.

2. Mulch: Mulch can help keep the soil moist, prevent weed growth, and regulate soil temperature. You can use any organic mulch like leaves, straw, or bark chips.

3. Pruning shears: Regular pruning of Phlox is essential to keep them healthy and vigorous. Make sure to use sharp pruning shears and cut back any dead flowers or damaged foliage.

4. Fertilizer: Phlox can be quite heavy feeders, so regular fertilizer applications are necessary. Use a balanced, slow-release fertilizer to give them the nutrients they need to thrive.

5. Watering can or hose: Phlox needs consistent moisture to thrive, so make sure to water them regularly. You can use a watering can or hose with a gentle nozzle to provide them with enough water without damaging the plants.


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By following these tips and investing in the right tools and equipment, you’ll be able to enjoy a beautiful, healthy garden full of thriving Phlox in no time!

Preferred Soil Type

Phlox (Phlox drummondii) are easy to grow and are a popular choice for adding vibrant color to gardens and landscapes. To ensure that your Phlox plants grow healthy, strong, and look their best, it is crucial to provide them with the right soil conditions.

Firstly, it is essential to choose a well-draining soil that is rich in organic matter. Phlox thrive in loamy soils, which are a mixture of sand, silt, and clay. These soils allow water to drain freely, preventing waterlogging, which can lead to root rot, and adverse effects on plant growth and health. Additionally, organic matter support beneficial microorganisms, essential for healthy root growth, and foliar development.

Secondly, Phlox prefers slightly acidic soil, with pH levels ranging from 6.0 to 7.0. Monitoring pH levels using a simple soil test kit is vital to ensure that the soil is within the Phlox’s preferred range. Soil that is too acidic or too alkaline can cause the plant to struggle to absorb nutrients, leading to stunted plant growth and yellow or discolored leaves.

Lastly, Phlox is a particularly thirsty plant and requires regular watering. However, it’s essential to allow the soil to dry slightly between watering to prevent over-watering, which can also lead to root rot. Generally, 1-2 inches of water per week is a good rule of thumb.


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In conclusion, growing healthy Phlox requires well-draining, loamy soil rich in organic matter, with a slightly acidic pH range of 6.0 to 7.0. Consistent watering is also crucial to provide the optimal growing conditions for a vibrant and thriving plant.

Watering Requirements

Phlox (Phlox drummondii) are beautiful, vibrant flowers that can add a burst of color to any garden. To ensure that your phlox plants grow healthy and thriving, it is essential to provide them with proper watering.

Phlox plants have a moderate to high water requirement as they prefer moist soil. Watering frequency will depend on various factors such as the climate, soil type, and weather patterns in your area. As a general rule, phlox plants need to be watered at least once a week, and the soil should be kept consistently moist but not waterlogged.

During hot or dry weather, you will need to water your Phlox plants more frequently, as they can become stressed and wilted in dry conditions. If you have planted your Phlox in the ground, make sure that the soil is thoroughly moistened to a depth of about six inches.

It is crucial to water your Phlox plants at the base to avoid wetting the leaves and flowers, which can lead to fungal diseases. Avoid watering your Phlox plants in the late afternoon or evening as wet foliage in the cool night can also cause fungal diseases.

During the growing season, it is a good idea to mulch around your Phlox plants. Mulching helps to retain moisture in the soil, reduce weed growth, and maintain consistent soil temperature. Using organic mulches like wood chips, grass clippings or shredded leaves can also provide additional nutrients to your soil.

In conclusion, to grow healthy and beautiful Phlox plants, it is essential to provide them with proper and consistent watering, especially during dry and hot weather. Always water your Phlox plants at the base and avoid getting water on the foliage. Finally, mulching around your plants can help maintain soil moisture and improve overall plant health.

What You Need To Know About Fertilizing Phlox (Phlox drummondii)

Phlox (Phlox drummondii) is a beautiful flowering plant that produces vibrant and showy blooms in shades of pink, purple, and white. To achieve a healthy and robust growth, it’s important to fertilize your phlox plant properly.

First and foremost, it’s essential to provide your phlox with fertile soil that is rich in organic matter. The soil should be well-draining as well, and pH levels should be within the range of 6.0 to 7.0.

Phlox plants have moderate nutrient requirements, so it’s best to fertilize them with a balanced 10-10-10 fertilizer in the early spring, just before the emergence of new growth. Alternatively, you can also use a slow-release fertilizer in the form of granules or spikes, which will provide nutrients to your plant gradually over several weeks.

During the growing season, it’s important to avoid over-fertilizing your phlox, as this can lead to excessive foliage growth at the expense of flower development. Instead, apply fertilizer every six to eight weeks to supply your plant with the necessary nutrients for healthy growth.


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When applying fertilizer, be sure to follow the package instructions carefully, as over-application can lead to fertilizer burn, which can cause leaf scorching and plant damage.

In addition to fertilizing, be sure to water your phlox regularly and maintain good air circulation around the plant to prevent fungal diseases. Finally, deadhead spent blooms regularly to encourage continuous flowering throughout the season.

By following these fertilizing and general care guidelines, you can enjoy a beautiful and healthy phlox plant that will brighten up your garden with its stunning blooms.

My Favorite Fertilizers For Phlox (Phlox drummondii)

Phlox, also known as Phlox drummondii, is a popular plant known for its bright, colorful blooms and delicate fragrance. To ensure a healthy and thriving plant, it is important to choose the right fertilizer.

One of the best fertilizers for Phlox is a balanced, slow-release granular fertilizer, such as a 10-10-10 or 12-12-12. These fertilizers contain nitrogen, phosphorus, and potassium, all of which are essential macronutrients that Phlox needs to grow and thrive. Slow-release formulas are especially good because they provide a steady supply of nutrients over time, rather than a quick burst that can be harmful to the plant.

Another good choice for Phlox is a fertilizer high in phosphorus, such as a 15-30-15 or 10-20-10 blend. Phosphorus is important for strong root growth and flower development, which is especially essential for Phlox plants. Phosphorus also helps the plant to absorb other nutrients more efficiently, leading to overall healthier growth.

When applying fertilizer to Phlox, it is important to follow the instructions carefully and not over-fertilize. Too much fertilizer can lead to burning of the leaves and roots, and can even kill the plant. It is generally recommended to fertilize once per month during the growing season, which typically runs from spring through summer.

In summary, for healthy Phlox, a slow-release granular fertilizer with a balanced ratio of nitrogen, phosphorus, and potassium is a great choice, as well as a fertilizer high in phosphorus for strong root growth and flower development. Carefully following instructions and not over-fertilizing will help ensure a thriving, beautiful plant.

Harvesting Phlox (Phlox drummondii)

Time To Maturity

Phlox (Phlox drummondii) is a popular flowering plant that belongs to the Polemoniaceae family. This plant species is native to Texas and northern Mexico, but it has been widely cultivated across the United States and other regions of the world due to its colorful and fragrant blooms.

When it comes to the time it takes for Phlox to go from sprouting to maturity, the answer can vary depending on various factors such as climate conditions, soil quality, and growing practices. Generally, Phlox seeds will germinate within 7 to 21 days after planting, depending on the temperature and moisture levels.

Once the plant has sprouted, it will take a few weeks for the seedling to develop into a sturdy plant with several sets of leaves. At this stage, the Phlox plant will be about 10-15 cm tall, and it will continue to grow throughout the growing season.

In most cases, Phlox plants will bloom during the late spring, summer, or early fall, depending on the weather and the region. The blooming period can last for several weeks or even a few months, depending on the plant’s health and growing conditions.

In terms of reaching maturity, Phlox plants can take anywhere from 60 to 90 days from sprouting to reach full maturity. This means that the plant will be able to produce seeds and continue to grow each year.

Overall, growing Phlox can be a rewarding experience for both seasoned gardeners and beginners alike. With proper care and attention, this plant can thrive in a variety of conditions and produce beautiful, fragrant flowers that will bring joy to any garden or landscape.

Harvest Instructions

Harvesting Phlox (Phlox drummondii) – A Step-by-Step Guide

Phlox drummondii, commonly known as Drummond’s phlox, is a beautiful flowering plant that belongs to the family Polemoniaceae. It produces vibrant, colorful blooms in shades of pink, red, purple, and white, making it a popular choice among gardeners and florists alike. Here’s a step-by-step guide on how to harvest Phlox:

Step 1: Choose the right time to harvest
The best time to harvest Phlox is in the morning or early evening when the temperature is cooler. This will help the flowers retain their freshness for longer. It’s important to wait until the flowers are fully bloomed before harvesting, so they have reached their peak of beauty.

Step 2: Select healthy flowers
Choose flowers that are healthy, free from damage or disease. Look for flowers that have brightly colored petals and are free from blemishes or signs of insect infestation.

Step 3: Cut the stems
Using a sharp pair of scissors or pruning shears, cut the stem of each flower at an angle. Make sure the cut is clean and not jagged, as this could damage the flower and reduce its lifespan.


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Step 4: Remove excess foliage
Strip off any excess foliage from the stem of the flower. This will help prevent the stems from getting tangled, and the flowers from touching each other which can accelerate decay.

Step 5: Place in water
Place the harvested flowers in a vase or container of water as soon as possible. Make sure the stems are completely submerged in the water, to keep them hydrated. You can also add a flower preservative to the water to keep the blooms fresh for longer.

There you have it, a quick and easy guide on how to harvest Phlox. Happy Gardening!

My Favorite Tools For Harvest Time

When it comes time to harvest your Phlox drummondii, having the right tools and equipment can make all the difference in ensuring a successful and efficient process.

First and foremost, you’ll need a good pair of pruning shears or scissors. Look for a high-quality, sharp blade that will cleanly cut through the stems without crushing or damaging the delicate Phlox flowers. Additionally, a pair of gloves can help protect your hands from any thorns or prickly stems that may cause irritation or injury.

Once you’ve got your shears and gloves, you may also want to consider a few additional items to help streamline your harvest process. A harvest basket or bucket can make it easy to carry your flowers as you move through the garden, reducing the amount of time you’ll spend making trips back and forth to a central location. A water bottle can also be handy for keeping yourself hydrated as you work.

If you’re harvesting a large amount of Phlox, you may also want to invest in a garden cart or wheelbarrow to help transport your harvest from the garden to your processing area. This will save you time and energy, allowing you to focus on the task at hand without getting bogged down by heavy loads.

Ultimately, the specific tools and equipment you’ll need for Phlox harvesting will depend on the scale of your operation and your personal preferences. However, with the right gear in hand, you’ll be well on your way to a successful and enjoyable harvesting experience.

End of Season & Overwintering

Phlox is a hardy, resilient plant that can thrive in most conditions, but proper end of season care and overwintering techniques can make all the difference in ensuring that it will come back strong and healthy next year.

First and foremost, it is important to keep your Phlox well-watered and mulched throughout the growing season. This will help to keep the soil moist and cool, which is especially important during periods of drought or extreme heat.

As the end of the season approaches, it is important to cut back your Phlox by about a third to prevent it from becoming too lush and susceptible to disease. This can be done in early fall or even later in the season if the weather is mild.

Once the first frost hits, it is time to prepare your Phlox for overwintering. If you live in a cold climate, it is important to mulch your Phlox heavily with straw or leaves to protect the root system from freezing. You may also want to cover it with a layer of burlap or other protective cloth to prevent excessive drying out.

In milder climates, you may be able to simply cut back your Phlox and leave it in place over the winter months. However, it is always a good idea to keep an eye on it and provide extra water if needed.

Come springtime, it is important to remove any dead or damaged foliage from your Phlox to encourage new growth. You may also want to add some fertilizer to help your plant get off to a strong start.

Overall, with a little bit of attention and care, you can help your Phlox survive the winter months and come back even stronger next year. So get to work and start giving your plants the care they need to thrive!

Final Thoughts on Phlox (Phlox drummondii)

In conclusion, growing Phlox (Phlox drummondii) can be a rewarding and fulfilling experience for gardeners of all levels. The germination process can be a bit tricky, but with the right techniques, you’ll have a healthy crop in no time. Once established, Phlox is low-maintenance, and the vibrant blooms provide a pop of color in any garden or landscape.

To ensure a successful harvest, be sure to choose the right location, provide the proper nutrients, and water regularly. Don’t forget to deadhead spent blooms to encourage new growth and maintain a tidy appearance.

In the end, growing Phlox is well worth the effort, and the satisfaction of watching your plants thrive is priceless. With a little patience and care, you’ll be rewarded with a stunning display of colorful Phlox blooms for seasons to come. Happy growing!

Frequently Asked Questions About Growing Phlox (Phlox drummondii)

1. What is the best season to plant Phlox?
The best time to plant Phlox is in the early spring when the soil is warm and moist. This will give the seeds enough time to germinate and establish well before the hot summer months.

2. How often should I water my Phlox plant?
Phlox plants require regular watering, especially during the hot summer months. Water your Phlox plant deeply once a week to ensure that the soil is moist and the roots are hydrated. Avoid overwatering as this can cause root rot and other fungal diseases.

3. Can Phlox grow in full sun or shade?
Phlox is a versatile plant that can grow in both full sun and partial shade. However, it prefers a location with ample sunlight for at least 6 hours a day. In hot climates, it’s best to plant Phlox in partial shade as it can suffer from heat stress if exposed to too much sunlight.

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