Hardy Hibiscus emerges late enough in spring that you’ll wonder if it died over the winter. Customers often reach out mid-April with disappointment and to let us know the plant didn't make it. When the ground warms enough it just takes off. We've watched this plant can shoot up inches in a day. It mounds into a full 2-4 ft. shrub within a month. By mid-summer it features dinner-plate blooms. Go ahead and pull out your cocktail and tiki umbrella. It's time to get rewarded with a bit of tropical paradise.
Travis & Jessica were really hot and annoyed with each other during this video about hibiscus.
We love watching this plant grow. Hibiscus is one of the last perennials to wake up each spring — so late that first-year customers almost always email us convinced it’s dead. It isn't, but it needs warmer soil. Once it decides to go, the growth is explosive: a bare crown becomes a rounded, shrub-like plant in a matter of weeks.
The show starts in mid-summer (July or August). Individual blooms only last a day or two — 24 to 48 hours — but a healthy plant keeps replacing them so fast that it stays blanketed in flowers for 2-4 weeks at peak. After that it slows down, usually holding two or three open blooms at a time from midsummer all the way to fall.
This is Hibiscus moscheutos AKA "Hardy Hibiscus"
Also known as perennial hibiscus, swamp mallow, and rose mallow. Hardy Hibiscus is a cold hardy perennial that can tolerate winter extremes to -30ish. It is sometimes confused with tropical hibiscus (not perennial) or Rose of Sharon, which is a woody shrub that keeps it's branches.
Hardy hibiscus is distinguished by it's cold hardiness, it's huge blooms and tropical appearance. It will die back to the ground every winter, and returns as the soil warms sufficiently.
The blooms: big, bold, and endlessly varied
Bloom color on hardy hibiscus is incredibly diverse, and breeders add more every year. Pinks, purples, and whites dominate the field, but reds are plentiful too. You’ll find plants with patterned petals, contrasting eyes, and heavy veining, plus swirled and multi-tone blooms for gardeners who want something a little different. In recent years creamy yellows and even a smoky, steel-lavender have started turning up in breeding.
Foliage that earns its keep
Flowers get all the attention, but the foliage adds appeal. Large, serrated, tropical looking leaves come in a variety of colors from deep greens to deep burgundy bronze and even swirled varieties exist. The folliage fills out into a nice rounded mound that creates a perfect shrub within the landscape and can provide a backdrop for early blooming perenials and annuals. In fall leaves fade to incorporate orange, yellow and broze before leaving stalks that can provide crutial habitat for polinator nesting before you cut them back in the early spring.
Tough: cold, pests, and heat
For a tropical looking plant. Hibiscus is tough. Cold. No problem. Wet feet. No problem. Deer and rabbits. No problem. It is drought tolerant, but will perform best with adequeate moisture. Flowers and growth will be better, but if you don't water it's not going to die.
Most pests leave it alone, but one pest to keep an eye out for is the Hibiscus Saw Fly. These little aholes can skeletonize a plant, but are easily controlled with a few applications of a run of the mill pesticide. Just avoid spraying when flowers are open to preserve your pollinators.
Where and how to plant
Site selection is important, but it’s not complicated:
Give it sun
Full sun is ideal. More sun means more blooms and a sturdier, fuller plant. They tolerate shade, but you'll get fewer blooms.
Keep it moist
Plant somewhere that stays reliably moist. Hibiscus is one of the few ornamentals happy in a low, damp spot where many perennials fail. A 2 inch layer of hardwood mulch is great. It holds soil moisture, and improves soil quality each year.
Plant early or late
Get it in the ground in early spring or late fall, so it has time to establish. We ship Hibiscus as dormant root systems and they look like little thanksgiving turkeys when we package them up (you'll see). This means we can get you a hibiscus for an affordable price at the absolute best time to plant.
Common questions (It's not growing. Is it dead?)
My hibiscus hasn’t come up yet — is it dead?
Almost certainly not. Hardy hibiscus is one of the very last perennials to emerge each spring, sometimes not breaking ground until early summer. Be patient. It’s waiting on warm soil, and your patience will be rewarded.
When does it bloom?
From midsummer into fall. Each flower lasts only a day or two, but a healthy plant replaces them continuously — blanketing itself in blooms for about a month at peak, then holding a few open flowers at a time through the rest of the season.
Is it deer resistant?
Yes, deer and rabbits generally leave hardy hibiscus alone. Your most likely pest is the Japanese beetle or Hibiscus Sawfly in mid-summer.
There are holes in the leaves — what do I do?
Look for Japanese beetles. Their numbers swing year to year, so be ready to pick them off by hand or treat if they get heavy. The plant’s vigor almost always outpaces the damage, and blooming isn’t typically affected. If it's Hibiscus Sawflies then treat with an insecticide like BT or Sevin. Just try and be mindful of pollinators they are especially important.
How much should I water it?
Generously. Hibiscus loves moisture, and consistent water gives you the biggest blooms. Established plants can handle some drought, but if you want the full show, don’t let it dry out — and mulch well.
Our favorite hardy hibiscus varieties
These are cultivars we grow and love. Every one is a native-type rose mallow with the same easy care — the differences are all in bloom color, size, and foliage.
‘Candy Crush’
Enormous 8–9” hot pink blooms on a shrubby, ~4’ plant with green foliage. Selected because it flowers from the ground up, not just at the top. A true show-stopper.
Shop ‘Candy Crush’‘Spinderella’
Spirals of pink and white on 9 inch flowers with red centers. Deep green foliage. Outstanding bloom appeal.
Shop ‘Spinderella’‘Ballet Slippers’
White flowers with hints of pink on tight red centers. Deep green/bronze foliage pops the white flowers.
Shop ‘Ballet Slippers’‘Midnight Marvel’
Fiery red blooms over dark green-bronze, near-purple foliage on a 4’ plant. One of the best for that dramatic dark-leaf, bright-flower contrast.
Shop ‘Midnight Marvel’
‘Cherry Choco Latte’
Massive 8–9” white blooms with cherry-red eyes and dark pink veining, over wine-purple foliage. Reaches 4’ tall and wide.
Shop ‘Cherry Choco Latte’
‘Watermelon Ruffles’
Hot pink blooms with ruffled edges. This one lights up the garden, backed by a constrasting deep green foliage 4.5 ft. tall and wide.
Shop ‘Watermelon Ruffles’On the horizon
We’re always hunting for the next great hibiscus, and there’s one we can’t stop thinking about since our visit to Walters Gardens.
Coming soon
‘Steel Your Heart’
We got an early look at ‘Steel Your Heart’ at Walters Gardens, and its cool, gunmetal steel-gray tone is unlike anything else in the hardy hibiscus world — a new color for the genus.
Walters Gardens expects it to be available in 2028 — we’ll be growing it the moment we can.The New Blooms Difference
You’re getting a full-grown plant — not a plug
Here’s how we do hibiscus. We plant in spring and grow each one for a full year into a substantial 3-gallon plant. We sell locally through summer and fall, and once we’re confident the plant has real size and value, we ship it bare-root and dormant the following fall or spring — while dormant. Because hibiscus emerges so late, that gives us a nice window to ship.
What lands on your doorstep is the equivalent of a 3-gallon potted plant, packed bare-root in a moisture-lock bag with damp material to keep the roots happy in transit. Pot it or plant it within a few days of arrival, keep it watered, and be patient while it wakes up. You’re starting a full season ahead of a plug or a bulb — at a fraction of what a leafed-out potted plant would cost you. More on how and when we ship →
Our take
Maybe the best part of this plant is simply how easy it is. It’s cold-hardy, pest-resistant, drought-tough once established, and it rewards a little water with a summer-long show of some of the biggest, boldest blooms you can put in a garden. It looks tropical, but it’s built for cold winters. For a new gardener who wants a big, confident result without a big learning curve, hardy hibiscus is about as close to a sure thing as we sell — you just have to be patient while it wakes up.
Ready to grow your own?
Shop our full lineup of hardy hibiscus — established, field-grown plants shipped bare-root and ready to take off in your garden.
Shop All Hibiscus