After the last frost, loosen the top inches of soil in the bed with a sturdy garden rake or spade, and mix in compost and a light sprinkling of lime if required.
The compost will not only provide nutrients for the phlox, but it will also help get oxygen to the roots. Moist, well-drained soil is what you need to grow healthy phlox plants. Mulch the flower beds well with bark or compost to retain as much moisture as possible. Planting phlox on a slope helps with drainage, and these flowering plants will do well on their own without much watering. If you do water during dry spells, add water at the base of the plants to discourage the spread of powdery mildew.
You can also cut down on the possibility of your plants getting this and other diseases by choosing cultivars that have been bred for resistance. One good trait of phlox is its resistance to being eaten by local deer populations.
This is a bonus, as wild deer love to graze on tender flower blossoms. Phlox does well when planted on a sloping, south-facing bed that receives plenty of sunlight. This is also a great way to showcase the blooms. If you place a short retaining wall at the edge of the flower bed, the blooms will spill over the top beautifully. Creeping phlox is useful as a border plant in front of taller flowers or shrubs, and it also helps prevent soil erosion. Their full round heads of white, lavender, pink, rose, red and bi-color blossoms sway attractively in the breeze, adding a gentle fragrance that is always welcome.
Rich of nectar, they are visited by hummingbirds , butterflies and birds which adore them! And so should you! One of the bluest Garden Phlox, 'Blue Paradise' features large lavender blue blooms with white centers and tiny red eyes that float atop the attractive dark green foliage.
Opening from deep blue buds, the sweetly fragrant blossoms turn violet-blue during the day and indigo in the evening. They are born on deep purple stems which enhance the ornamental quality of this Phlox variety.
Blooming for weeks from mid to late summer, the flowers are rich of nectar and visited by hummingbirds, butterflies or birds which adore them. Remarkably mildew resistant, it grows in upright clumps up to feet tall cm. A reliable bloomer with a high resistance to mildew, Phlox paniculata 'Bright Eyes' is an herbaceous perennial with terminal panicles of soft pink flowers adorned with a prominent crimson eye.
Blooming for weeks from mid to late summer, the fragrant flowers are rich of nectar and visited by hummingbirds and butterflies. They are borne on stiff, upright stems clad with narrowly oblong, deep green leaves and make excellent fresh cut flowers. Plant in drifts for great impact and make sure you have enough for the vase!
A dwarf and compact garden phlox, Phlox paniculata 'Candy Twist' is an herbaceous perennial with striking clusters of lavender-pink flowers adorned with contrasting white stripes like the spokes of a wheel. They are borne atop relatively short, bushy clumps of medium green foliage.
Reputed to have good resistance to powdery mildew, this garden phlox selection is perfectly suited for containers and the front of the border. Great for small gardens! Vigorous and free-flowering, Phlox paniculata 'David' features fragrant, pure white flowers, densely arranged in pyramidal clusters atop upright, sturdy stems which seldom need staking. Famous for its good resistance to powdery mildew, the foliage consists of pointed, lance-shaped, bright green leaves.
Blooming for weeks from mid to late summer, the flowers are rich of nectar and visited by hummingbirds, butterflies or birds which adore them! Grows in upright clumps of stiffly erect, branched stems up to feet tall cm. Prolific and mildew resistant, Phlox paniculata 'Eva Cullum' features large, bright pink blooms with tiny dark pink eyes that float atop the attractive dark green foliage. Sweetly fragrant, they are borne on stiff, upright stems which seldom need staking.
Grows in upright clumps up to in. Deserving a place in the garden, Phlox paniculata 'Franz Schubert' is an herbaceous perennial with large, pyramidal clusters of soft lilac tinged pink flowers. Blooming for weeks from mid summer to early fall, the sweetly fragrant flowers are rich of nectar and visited by hummingbirds and butterflies.
They are borne atop stiff, upright stems, clad with narrow lance-shaped leaves, and make excellent fresh cut flowers. Healthy and mildew resistant, this cultivar gives color and fragrance to summer. Extraordinarily eye-catching, Phlox paniculata 'Goldmine' is an herbaceous perennial with large, terminal clusters of bright cerise to magenta flowers, nicely contrasting with the variegated foliage. They are borne on stiff, upright stems clad with narrow, lance-shaped, green leaves broadly edged with rich golden borders, which fade to creamy white as the season progresses.
Vigorous, good mildew resistance. Enjoying a long blooming season, Phlox paniculata 'Grenadine Dream' is an herbaceous perennial with large, pyramidal clusters densely packed with reddish-purple flowers. Healthy and mildew resistant, this compact phlox cultivar is perfectly suited for containers, courtyard gardens, and the middle of the border. Noted for having excellent resistance to powdery mildew, Phlox paniculata 'Jeana' is an herbaceous perennial with large, tiered clusters of small, lavender-pink flowers.
Blooming for weeks from mid summer to early fall, the fragrant flowers are rich of nectar and visited by hummingbirds and butterflies. They are borne on stiff, upright stems clad with narrow, lance-shaped, deep green leaves. This charming and unique garden phlox remains completely powdery mildew-free, even in the hottest and most humid of summers.
A reliable bloomer with a high resistance to mildew, Phlox paniculata 'Laura' is an herbaceous perennial with large, pyramidal clusters of fuschia-purple flowers adorned with starry, white centers and dark eyes. They are borne on stiff, upright stems clad with narrow, lance-shaped, deep green leaves and make excellent fresh cut flowers.
A dwarf and compact garden phlox, Phlox paniculata 'Neon Flare Blue' is an herbaceous perennial with large and striking clusters of white flowers adorned with purple-pink and blue-violet shades. Perfectly suited for containers and the front of the border. A reliable bloomer with a high resistance to mildew, Phlox paniculata 'Nicky' is an herbaceous perennial with large, pyramidal clusters of dark magenta purple flowers, the darkest of all tall garden phlox.
They are borne on stiff, upright stems clad with narrow, lance-shaped, mid-green leaves and make excellent fresh cut flowers. A dwarf and compact garden phlox, Phlox paniculata 'Peppermint Twist' is an herbaceous perennial with striking clusters of pink flowers adorned with contrasting white stripes like the spokes of a wheel.
Deserving a place in the garden, Phlox paniculata 'Starfire' is an herbaceous perennial with large, pyramidal clusters of vivid cherry-red flowers. They are borne atop stiff, upright stems, clad with narrow, lance-shaped, red-tinged leaves.
They make excellent fresh cut flowers. Home Yard and garden Find plants Flowers Tall garden phlox. Quick facts Tall garden phlox have long-blooming, colorful flowers that pop in any garden. Tall garden phlox are hardy and vigorous when grown in the right conditions. These perennial flowers are often used as background plants in narrow borders or in groups between taller and shorter plants in a wide border.
Planting Tall garden phlox are typically purchased as potted plants from nurseries, garden centers, or local farmers' markets. Potted nursery plants may be transplanted into the garden throughout the growing season, right up to early autumn. Buy bare root plants from mail-order nurseries in spring. Avoid purchasing bare root plants in the fall. Fall-planted specimens are more subject to frost heaving. Mail-order plants might arrive too late in fall to be planted safely. When planting, set the crown of each plant about an inch and a half below the soil surface for both potted and bare root plants.
Incorporate generous amounts of organic matter into any soil before planting. And it's an absolute necessity if the site has sandy soil. Composted yard waste, peat moss, or well-rotted manure all work well to improve soil structure. Mulch fall-planted phlox with four to six inches of hay or straw, chopped leaves, or pine needles as soon as the soil freezes.
After the first year fall mulching is less critical, though it's always a good idea. Mulch not only protects plants from winter's cold, it helps prevent premature soil warming that could result in early spring growth, before weather is reliably mild. Transplanting and dividing Most phlox need to be divided every two to four years if they're growing well. The best time to do divide and transplant is in spring, before new growth begins. Each division should consist of three to five vigorous shoots with roots attached.
When planting, position them as you would new plants, with the crowns an inch or so below the soil surface. Space them 18 inches apart to ensure adequate air circulation. Common problems In Minnesota, the most common problems of tall garden phlox are powdery mildew, a fungal disease, and spider mites. Open all Close all.
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