How To Grow Garden Phlox?

Are you looking for a beautiful flower to add to your garden?

Garden phlox (Phlox paniculata) is a popular perennial flower found in gardens throughout the United States. It grows best in moist but well-drained soil and full sun to partial sun.

The flowers come in various colors, including lavender, lilac, pink, purple, salmon, and white. They bloom during the summer and can reach heights of 2 to 4 ft.

Follow these simple steps to grow garden phlox in your backyard!

Characteristics of Garden Phlox

Botanical NamePhlox paniculata 
Common NamesGarden phlox, tall phlox
Plant TypeHerbaceous perennial
Mature Size2 to 4 ft. tall, 2 to 3 ft. wide (but varies by cultivar)
Sun ExposureFull sun to partial sun
Soil Type Moist but well-drained
Soil pHNeutral
Bloom TimeSummer
Flower ColorLavender, lilac, pink, purple, salmon, white
Hardiness Zones4 to 8, USA (but varies by cultivar)
Native AreaEastern United States

Varieties of Garden Phlox:

Creeping Phlox

Phlox Subulata

Phlox Paniculata

Garden Phlox

Phlox Stolonifera

Phlox Adsurgens

Moss Phlox

Phlox divaricata

Woodland Phlox

Tall Phlox

Wild Phlox

Phlox Drummondii


Garden phlox is a beautiful perennial flower in various colors, including white, pink, purple, and red. This versatile plant can be used for several different purposes in the garden. 

For example, garden phlox makes an excellent border plant or groundcover. It is also well suited for cottage gardens and other informal gardens. In addition to its aesthetic uses, garden phlox has several other benefits. For instance, the dense network of roots helps to prevent soil erosion. The fragrant blossoms also attract pollinators such as bees and butterflies.

Furthermore, garden phlox is known to have medicinal properties. The essential oil of garden phlox can treat various conditions, including aging, anxiety, and muscle spasms. Finally, garden phlox can also be used in cosmetics and air fresheners due to its sweet scent.

How to Grow Garden Phlox?

One of the most attractive blooms you may have in your garden is phlox plants. They come in various hues and have a lovely, pleasant aroma. Providing them with the proper growing circumstances is relatively simple to cultivate.

Phlox plants thrive in full sunlight. However, they can also thrive in a little bit of light shade. They favor well-draining, rich, loose soil. Maintain wet to slightly dry soil. Once or twice a week during dry months, water them. When planting them, add all-purpose fertilizer, then once a month.

Your Phlox plants should grow nicely with minimal issues once they are established. Keep weeds out of the plants. Apply a layer of mulch of two to three inches once they have expanded a few inches to aid in soil moisture retention and for aesthetic purposes. Tall stems can be pinched back to create a bushier appearance.

With tender loving care, you will soon have a garden full of vibrant Phlox blossoms that will perfume the air.

Growing Phlox from Seed:

Any garden would benefit from the lovely and fragrant addition of garden phlox, which is also reasonably simple to grow from seed. In most circumstances, direct sowing is ideal because phlox seeds germinate and increase. 

However, if spring is a little later in your area, you can start them inside in a sunny window. Heat mats and lights are always beneficial when growing phlox from seed. Rich, well-drained soil with either full sun or light shade is ideal for growing garden phlox. Once established, they can withstand droughts pretty well. 

Throughout the season, deadheading will encourage them to produce even more blossoms. Deer-resistant garden phlox makes lovely cut blooms. You can appreciate their beauty for many years if you take a little care of them.


Growing Phlox From Dividing:

Garden phlox is a perennial flower that blooms for a long time and has a pleasant scent. It’s a preferred option for summer gardening and is simple to multiply via division. This is how you do it:

Start by cleaning the roots of extra dirt. Then, section the roots using a clean, sharp knife, ensuring that each portion has three or more shoots and enough roots. Plant the fresh divisions and give them plenty of water as soon as possible. Reducing plant stress and promoting fast rooting can be achieved by watering them with a rooting fertilizer.

Yard phlox may be easily multiplied from division with a bit of care, giving you more of these lovely plants to enjoy in your garden.

Growing Phlox From Cuttings

Phlox for the garden can be multiplied by taking cuttings from the tips of new growth. You may effectively cultivate garden phlox from cuttings by using the procedures below.

First, using a sterile razor or a good pair of sterile scissors, take multiple cuttings from the tips of new growth. The length of each cutting should range from 2 to 4 inches. To keep the cuttings from drying out, submerge them immediately in water.

Next, apply rooting hormone to each cutting’s cut end. After that, put each clipping in a separate pot with potting soil that has been watered.

Take good care of the cuttings; keep the roots moist; give them enough sunlight, and shield them from the cold. The cuttings should root and start to grow within a few weeks. They can be transplanted into your garden once they have established themselves, where they will bloom in the late spring or early summer.

Growing Requirements:

Beautiful, fragrant garden phlox is a charming addition to any garden. They bloom from early summer through fall and come in various colors, including white, pink, purple, and red. Although garden phlox are generally simple to grow, there are a few things you need to be aware of to make sure you are successful. 

First, the soil must be fully exposed to the sun for Garden Phlox to thrive. They are frequently cultivated in a rockery and form an excellent ground cover. Phlox divaricata and other species from forest settings, frequently referred to as “woodland phlox,” require some shade and humus-rich soil. Garden Phlox can grow up to 1 meter tall and 70 centimeters wide, making them reasonably large plants. Garden Phlox can be a beautiful addition to any garden with some care and maintenance.

How to Plant Garden Phlox:

Garden Phlox is a lovely addition to any garden; they are not difficult to grow with little care. Garden Phlox can be challenging to cultivate from seed. Therefore they are typically started through cuttings or transplants. Make sure to dig a hole twice as big as the root ball when transplanting Garden Phlox. 

Garden Phlox should be planted in wet, well-drained soil in either full sun or light shade. Shorter Garden Phlox kinds can be placed towards the front of a border, while taller varieties work best in the rear or center. Garden Phlox can be planted either in the fall, at least a month before your first frost, or in the spring, after the fear of frost has gone. Garden Phlox will thrive and enhance the beauty of any garden with a little TLC.

How to Care Garden Phlox:

Garden Phlox require little maintenance and will flourish in any garden with little care.

Although it adds beauty and fragrance to any garden, garden phlox does have some requirements to grow.

It needs well-drained soil above all else; if the roots are left in standing water for too long, the plant will swiftly decay.

Phlox in the garden also favors full sun in colder climates and half sun in hotter ones. Overhead watering must be avoided since moist leaves are more vulnerable to fungus-related diseases.

Finally, hot, muggy weather is not suitable for garden phlox; if you reside in a region with a temperature like this, it is recommended to mulch around the roots to keep them cool. Garden phlox will bring years of enjoyment with a bit of maintenance.

How far apart to plant Garden Phlox?

When planting garden phlox, it is best to space them about 60 cm apart. This will help ensure that they have enough room to grow and thrive.

How to Prune Garden Phlox:

A stunning flowering plant that can bring color and interest to any garden is called garden phlox (Phlox paniculata). Despite being relatively simple to maintain, garden phlox occasionally needs to be pruned to maintain its most pleasing appearance. Before the onset of new growth, early spring is the ideal time to prune garden phlox. 

Before pruning, ensure all dead or diseased branches have been removed. Leave at least four inches of healthy growth above the ground when trimming back any lanky or overgrown stems to shape the plant, and remove any extra branches or stems. Garden phlox will grow and bring years of enjoyment with a bit of love and care.

How to Propagating Garden Phlox:

Beautiful perennials called garden phlox bloom profusely with fragrant flowers in the summer. These plants can be multiplied by seed or division and are relatively simple to maintain. Phlox should be multiplied in early spring for optimal results. Plants can be divided by digging them up and using a sharp knife to cut the roots into more manageable bunches. 

These clumps should be immediately replanted, with a spacing of 18 to 24 inches. As soon as the ground can be handled in the spring, you may plant phlox seeds directly. Thinly scatter seeds and cover with 1/8 inch of soil. Within five to ten days, germination should take place. You may quickly enjoy a lovely garden full of aromatic blooms with a bit of attention.

How to Harvest Garden Phlox:

Lovely and aromatic addition to any garden, garden phlox is simple to grow from seed. With some perseverance, you may collect your seeds and pleasure in seeing your phlox plants develop at the end of the summer. This is how you do it:

Let a few blooms stay on the plant when the flowers start to fade. Choose blossoms from healthy plants to ensure that your seeds will be robust and disease-resistant. Wait until the seed pods turn brown after letting the blossoms naturally drop off. Snip them off the plant and put them in a paper bag once they have dried.

Store the sack in a warm, dry location until the seeds are dehydrated. This may require several weeks. Once dried, pour them onto a platter, then remove any substantial leaves or petals. 

After that, store the seeds in a paper bag or another container. Plant them in the early spring after marking them with the date, so you’ll know when they were gathered. You may quickly create a flourishing garden with lovely phlox blossoms if you take a little care.

Pest and Diseases of Garden Phlox:

Any garden will benefit from the beauty and aroma that garden phlox brings. But gardeners need to be mindful that this plant is prone to powdery mildew, a fungus that prefers warm, humid weather.

 Look for mildew-resistant garden phlox varieties like “David” whenever you can. You can also do the following to avoid powdery mildew:

By leaving enough room between plants, you can ensure that garden phlox receives adequate air circulation.

Cutting the stems to the ground and eliminating them as part of your fall garden cleanup. If any of the foliage has powdery mildew, do not compost them.

Although insect pests do not frequently harm garden phlox, it is always a good idea to remain vigilant for any potential issues. You can ensure that your garden phlox will flourish for many years by adopting a few easy precautions.

 Common Problems of Garden Phlox:

The most frequent issue with tall garden phlox is powdery mildew, which causes unsightly, powdery white blotches on the leaf. The fungus first impacts new growth, which causes leaves to curl and turn yellow before eventually turning brown and black. Additionally problematic, particularly in hot, dry weather, are spider mites. 

These minuscule vermin sap from the leaves, turning them yellow and brown until they eventually fall off. Phlox fungus, which causes dark brown blotches on the leaves, can potentially be an issue. 

Flowers that are affected by brown rot may wilt and turn brown. Watering early in the day will help you avoid these issues because it will give the foliage time to dry before dusk. Use a fungicide when the first indication of brown rot or powdery mildew.

Companion Plants for Garden Phlox:

A lovely, fragrant flower that blooms in the summer is garden phlox. It is a well-liked selection for gardens and draws bees and butterflies. Garden phlox can benefit from the assistance and growth of companion plants. 

Garden phlox pairs well with cosmos, globe amaranth, daylilies, Shasta daisy, and phlox. They will not compete in resources because they have similar, expanding needs.

On the other hand, Mexican primrose, perennial hollyhock, and monarda do not go well with garden phlox. They will fight for resources with Garden phlox because they have different growing requirements. It’s crucial to consider the plant’s demands and select companion plants for Garden phlox that will enhance its development.


Garden phlox reproduces via seed, right?

Some varieties of phlox will self-seed in your yard, but most cultivars are grown from cuttings. Plants that are started from cuttings typically grow better than seedlings. Planting too many could result in weed growth.

Does phlox return each year?

Phlox are yearly plants known as perennials. Either Garden Phlox or Creeping Phlox are possible. Both Garden and Creeping Phlox produce fragrant flowers that draw pollinators like butterflies and hummingbirds.

Is it simple to plant garden phlox?

The plants of the garden phlox are tall and stunning. They are ideal for borders in the sun. The white, lavender, pink, and purple blossoms are exquisite. They also create beautiful bouquets. Garden phlox is an excellent plant for any garden because it’s simple to cultivate and care for.

Does garden phlox bloom the entire summer?

Phlox plants come in a variety of varieties and are excellent ground covers. From early spring through late summer, these plants will blossom. They are also simple to grow and maintain.


Garden phlox is a beautiful, fragrant flower that blooms in the summer. It is a popular garden choice, attracting bees and butterflies. Garden phlox is susceptible to powdery mildew and other diseases, so it is essential to prevent these problems. 


We will be happy to hear your thoughts

Leave a reply

Best Garden Reviews