June Blooms in my Georgia Garden: Hibiscus moscheutos

Annabelle Hydrangea isn't the only Southern native shrub with voluptuous blooms. Just take a look at this native Hibiscus! Hibiscus moscheutos displays blooms up to 12 inches across. The blooms on her remind me of the huge dresses worn by Southern Belles on the movie Gone with the Wind.

Hibiscus moscheutos Lord Baltimore

Also known as Swamp Mallow, Dinner Plate Hibiscus (Due to the huge diameter of the flower), and Rose Mallow, Hibiscus moscheutos is native to marshes in the Southeastern United States. 

Many new varieties of this hibiscus have been developed, resulting in a wide range of bloom colors and interesting foliage.

The huge blooms up to 12 inches across begin opening in late June or early July in our Georgia garden and keep coming until cool weather arrives in the Fall. Although each bloom lasts just one day, a large plant can sport several blooms at one time. Flowers come in many different shades of pink, red, or white. They might be a solid color or have a red eye or some type of variegation in the bloom.

Like Hibiscus coccineus, this plant will grow very fast if it is happy in the spot where it grows. Give it plenty of room, because by mid-summer, it can be 5 feet tall and just as wide. Rose Mallow, like other perennial hibiscus, will die to the ground in Winter and regrow from the base in late Spring.

This fabulous Hibiscus is as easy to grow as Hibiscus coccineus, as long as you have a spot in full sun and can reach it with a hose.  In my garden, this hibiscus has proved to be quite drought tolerant, as long as I give it a drink of water when I notice the leaves drooping from thirst.

Hibiscus moscheutos has a larger hardiness range than coccineus, so it can be grown in gardens further north. According to the USDA Hardiness Zone Map, Hibiscus moscheutos can be grown in zones 5-10.

June Blooms in my Georgia Garden: Hibiscus coccineus, Swamp Mallow

It's hard for me to believe people continue to spend money on those tropical hibiscus plants every year, when they could buy the hardy hibiscus instead and enjoy the same plants year after year. Hardy Hibiscus is native to the Southeastern United States and is a perennial plant that tolerates whatever weather nature dishes out. 

One such hardy hibiscus is Hibiscus coccineus, known by many common names. Folks from Texas like to call it Texas Star Hibiscus. Like most things from Texas, Texas Star can become a huge plant quickly, if it likes its planting spot. (Actually, the USDA Plant Database doesn't show this Hibiscus naturally occurring in Texas. Any of you Texans out there know different?  We welcome your comments!) Also known as Swamp Hibiscus, this hibiscus loves most or wet soil. Swamp Mallow or just Mallow is another common name for this wonderful native plant. The common name Scarlet Hibiscus speaks for itself, since the blooms definitely are scarlet in color.

Hibiscus coccineus grows beautifully beside a creek bank or pond edge, but it will grow just as well in regular garden soil. 

New foliage begins as a bronzy reddish green which I find very attractive. Leaves are shaped somewhat like a maple leaf, but some visitors who seem to be familiar with marijuana tell me this hibiscus looks like a marijuana plant. I have never seen marijuana, so I can only take their word for it. 

The blooms which can best be described by a photograph are bright red and quite large. This is another plant in our garden that attracts pollinators by the droves. I have measured the bright flowers up to 6 inches across. And whether Texas can truly claim Texas Star Hibiscus or not, the blooms are indeed star-shaped. And once it starts blooming in June, it will continue to do so until cool weather arrives in the Fall.

Hibiscus coccineus will reach a height of 10 feet or more where water is plentiful, so remember that when you plant it. 

Mix in a large amount of compost or composted manure when you plant any hibiscus, because they all enjoy rich soil. Although native hibiscus can tolerate seasonal drought, you'll get the most lush foliage and many more flowers if you can water your plants regularly. We don't have the luxury of a creek or pond on our property, but my largest specimen gets watered by the sprinkler at the greenhouse almost daily. That's probably why it's about 3 feet taller than most plant encyclopedias describe.

Hibiscus enjoys full sun and will not bloom without it. Really, no shade at all is best.

Unfortunately, Hibiscus coccineus won't thrive in the Northern states, and is winter hardy only in USDA Zones 7 and warmer. (If you are in USDA Zones 5-8, check out Hibiscus moscheutos.)

Fragrant Swamp Azalea: Rhododendron viscosum

If you like fragrant plants, you'll want Rhododendron Viscosum in your garden! Most often referred to as Swamp Azalea, Rhododendron Viscosum is a native azalea found in the Eastern United States. Pure white blooms in early summer have a pleasing spicy scent reminiscent of cloves. 

Rhododendron viscosum in June

Swamp Azalea, as the name implies, is one of the few azaleas that can tolerate periodically wet soil. This plant can grow in regular garden soil, but it does not want to miss out on water. If you can water regularly when rainfall is absent, Swamp Azalea will be easy for you to grow in your garden. Grows into a very tall shrub when planted near a pond or stream. Swamp Azalea is the perfect native rhododendron for a rain garden.

Rhododendron Viscosum can be grown almost anywhere in the United States since it grows well in USDA Hardiness Zones 4-9. 

Swamp Azalea can be grown in full sun if regular water is available. Otherwise, filtered sun/shade is best.

Texas Star Swamp Mallow: Native Hibiscus

Hibiscus coccineus, Texas Star, Swamp Mallow
Shady Gardens Nursery

One of the showiest summer bloomers in our garden this time of year is the Texas Star Hibiscus. A native plant of the Southeastern United States, Hibiscus coccineus is also known as Swamp Hibiscus, probably due to its love for moist soil.

Hibiscus coccineus is very easy to grow. It grows well near a pond or stream, and really enjoys a soggy spot. We have no pond, stream, or soggy spot in our garden--our Hibiscus is located in ordinary garden soil (that means dry hard clay in Georgia language). Admittedly, I do water it on occasion, but it grows bushier each year--we've had it several years now.


You can grow Hibiscus coccineus if you live anywhere in the south and as far north as USDA Zone 6!

Even before blooms begin in summer, Texas Star is a spectacular presence in the garden. Palmate leaves resemble Japanese Maple foliage and even have a reddish tinge.

Blooms are showy red star-shaped flowers appearing throughout summer and into Fall. The flowers can be up to 6 inches across!

Hibiscus coccineus dies down to the ground in winter but re-emerges in spring. By mid-summer this hibiscus will be 6-8 feet tall and look more like a shrub than an herbaceous perennial.

Texas Star Hibiscus does need full sun to bloom well, and you'll need to water it weekly when rainfall is absent. Also a regular application of compost or composted manure will keep it growing well for you.

Source for Texas Star Hibiscus: Shady Gardens Nursery.

Hibiscus: Choose Native for an Easy, Beautiful, Low Maintenance Garden

Every summer many, many people purchase the Tropical Hibiscus to place on their patio, porch, or around their pool. While it is true that the Tropical Hibiscus is beautiful and really does lend a tropical look to the garden, it will die to the ground with the first frost unless you live in the sub-tropical states. And if you've ever tried overwintering one indoors, you know how difficult that can be!

Instead, consider our American Native Hibiscus varieties. There are several, and in my opinion they are much more beautiful than the Tropical Hibiscus. Our native hibiscus is an herbaceous perennial plant that grows to shrub size each summer.

Hibiscus coccineus has bright red star-shaped blooms all summer on tall stems. This native hibiscus is known by many common names, among which are Texas Star Hibiscus, Swamp Hibiscus, and Swamp Mallow. The Swamp Hibiscus loves consistently moist soil but grows well in my garden with only a weekly watering. Hibiscus coccineus is beautiful even when not in bloom, having reddish-tinged green leaves shaped like maple leaves. Some visitors have claimed it looks like marijuana, but I can't say for sure, since I've never seen a marijuana plant. Perhaps they're telling on themselves! What do you think?

Hibiscus coccineus at Shady Gardens Nursery

'Very spectacular' is the best description for Hibiscus moscheutos or Swamp Mallow. Blooms are the size of a dinnerplate! See for yourself:

Hibiscus moscheutos growing alongside Rudbeckia Goldsturm

Hybridizers have developed many types and colors, but all are beautiful and any one would be a show piece in your garden.

The native hibiscus is so easy to grow that it would be a shame not to have one in your garden. Hibiscus coccineus is hardy as cold as USDA Zone 6 and Hibiscus moscheutos is happy in even colder temperatures found in USDA Zone 4! Wow! They are deciduous plants but will return in May each year with no special care.

For more information on availability of the hardy native hibiscus, contact us anytime at Shady Gardens Nursery.