Photo by Melody

PlantFiles: Hardy Hibiscus, Rose Mallow, Swamp Mallow
Hibiscus moscheutos 'Lord Baltimore'

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Family: Malvaceae (mal-VAY-see-ee) (Info)
Genus: Hibiscus (hi-BIS-kus) (Info)
Species: moscheutos (mos-KEW-tos) (Info)
Cultivar: Lord Baltimore

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6 vendors have this plant for sale.

40 members have or want this plant for trade.

Height:
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)

Spacing:
24-36 in. (60-90 cm)

Hardiness:
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Sun to Partial Shade

Bloom Color:
Red

Bloom Time:
Mid Summer
Late Summer/Early Fall

Foliage:
Herbaceous

Other details:
Requires consistently moist soil; do not let dry out between waterings

Soil pH requirements:
6.1 to 6.5 (mildly acidic)

Patent Information:
Patented

Propagation Methods:
From seed; direct sow outdoors in fall
From seed; stratify if sowing indoors
Direct sow as soon as the ground can be worked
From seed; sow indoors before last frost
From seed; direct sow after last frost
From seed; germinate in a damp paper towel
From seed; germinate in vitro in gelatin, agar or other medium
Scarify seed before sowing

Seed Collecting:
Collect seedhead/pod when flowers fade; allow to dry
Allow pods to dry on plant; break open to collect seeds
Allow seedheads to dry on plants; remove and collect seeds
Properly cleaned, seed can be successfully stored

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to view:

By Gabrielle
Thumbnail #1 of Hibiscus moscheutos by Gabrielle

By Brugie
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By hankpage
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By PaulDavid
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By luvsgrtdanes
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By TexasWildflower
Thumbnail #7 of Hibiscus moscheutos by TexasWildflower

There are a total of 23 photos.
Click here to view them all!

Profile:

13 positives
2 neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive coriaceous On Mar 29, 2014, coriaceous from ROSLINDALE, MA wrote:

This is a fantastic perennial, with exotic, tropical-looking crimson flowers over a long season from late summer into early fall. Like all herbaceous hibiscus, it's late to emerge from dormancy in the spring, but it makes up for lost time with its rapid growth.

The height of this cultivar is valuable in the garden. More recent hybrids have been bred with 18" retail shelving in mind.

In Z6, I find spring planting helps it survive its first winter. Tolerates poor drainage, and appreciates extra moisture.

This is a hybrid between four herbaceous species native to the southeastern US, and not a cultivar of H. moscheutos.

It is not patented.

Positive spiersy On Feb 4, 2013, spiersy from Sarnia, prov. of Ontario
Canada wrote:

we have three kinds of hibiscus here (Sarnia, Ontario, N7S 4C8)
1) rose of sharon-light green, spade shaped leaves, various types

2) rose mallow-light green, spade shaped leaves, various types
then we have mine

3) "dinnerplate" hibiscus - dark green, deeply split, three lobed leaves. about 3-4 feet high. impressive just for the foliage. mistaken by neighbours for K2 or tundra marijuna. flowers 9 to 14 inches across depending on how many were blooming at once.the flower is configured just like the "lord baltimore".

so what do i have?

Positive sandkisses On Sep 24, 2011, sandkisses from Ponte Vedra Beach, FL wrote:

Until this year all of my hibiscus have produced beautiful blooms 9 out of 12 months. Mine have made it through multiple freezes, including the time the sprinkler was accidentally turned on and encapsulated the plant in ice. This is a lovely addition to every landscape.

Positive braun06 On Jul 19, 2011, braun06 from Peoria Heights, IL (Zone 5b) wrote:

This hibiscus is a strong performer in my yard. Althought mine started flowering later than others in the area this summer it grew huge from a 2 gallon container last summer. This year it is 5' tall but perhaps spreading a healthy 6' wide. There will be plenty of flowers.

Positive pandybear On Aug 8, 2010, pandybear from Fenelon Falls
Canada wrote:

I have just bought one of these magnificent plants and am in zone 3! I believe it is hardy enough to winter over. I have it in a pot right now but will get it into the ground shortly, once I find the perfect place for it! I would love to have several, but will see how this one does this winter!

Neutral AudiPete On Jul 20, 2010, AudiPete from Topsfield, MA wrote:

I just bought this from a grower in Kennebunkport Maine. It winters over outside with no special treatment!

Positive munchkin44 On Oct 14, 2008, munchkin44 from Fairview, TN wrote:

This is the second year I have had this plant. It was 8 ft. tall and 9 ft. wide. Covered most of the summer with giant blooms. I did have a small green worm that got some of the leaves but since it was a place birds waited for their turn at the feeder, they got a lot of them. Humming birds and butterflies loved it!

Positive Gabrielle On Aug 11, 2006, Gabrielle from (Zone 5a) wrote:

My favorite Hibiscus - no pale pink here! My information says hardy up to zone 10. Soaking seed aids germination. Slow to break dormancy in spring.

Positive figaro52 On Sep 22, 2005, figaro52 from Oak Lawn, IL (Zone 5a) wrote:

Incredible Hibiscus! I planted two of these side by side. Now, in their second summer they are over 6 feet tall, and the brilliant red blossoms measure about 10 inches in diameter! Both plants have started a second bloom cycle! I recommend using plant props early in the season to support the heavy branches that form later on. This plant is late to emerge in the spring, but makes up for lost time! Very fast grower. Quite a show of blooms!! Truly one of the highlights of my garden this year!

Positive katieflower On Jul 22, 2004, katieflower from Shawnee Mission, KS wrote:

The Rose Mallow 'Lord Baltimore' is easy even for someone without a green thumb. Mine doubled in size in just one season. I would like it to be more bushy; mine is not in full sun, perhaps that is why it is tall but not bushy.

The earth is claylike in this area of Kansas and we have standing water problems, yet it seems to do well. One nursery told me to not pull off the cup that holds the spent bloom. Another said, not true.

Positive msbobolink On Jul 3, 2004, msbobolink from Tompkinsville, KY wrote:

I have had this plant for several years and it's a reliable bloomer, here in southern Kentucky, with very large blooms...except for the one year that the japanese beetles went unchecked and enjoyed the blooms instead. I didn't realize that this plant should be kept moist and I planted it in a rather dry spot in full sun and I planted it before I had much experience with growing flowers and didn't even enrich the poor soil it's in...but it seems to like it there and does very well. The only complaint I have about this plant is that its foliage isn't very attractive. A couple of years, I pruned it before it bloomed to see if a more compact plant would be less weedy looking...the plant did look a little better but I sacrificed size of blooms. Lots more blooms but smaller size. All in all I'd have to say that it's worth the unsightly foliage for the spectacular display of huge bright red blooms.

Positive wannadanc On Sep 1, 2003, wannadanc from Olympia, WA wrote:

Incredible blossoms!!!!! Fast grower! No green bugs here, but brown cloven hooved animals - AKA DEER - like to feast on this one!

Neutral keithann On Jul 31, 2003, keithann wrote:

Second year since I bought mine, second year the leaves have been decimated by some kind of small green worm. Small but FAST working, and in large numbers. I blamed the Japanese beetles the first year, and they may still play a part, but it's the little worms that really did the damage. Something keeps getting the new leaves as they try to return. The few blossoms we got were spectacular, but I plan to move the plant to a less prominent spot because it's so unsightly. I'm in a warm Zone 8 location.

Positive gardingranny On Jul 30, 2003, gardingranny from Spartanburg, SC wrote:

Big blooms as big as dinnerplates here in Spartanburg SC. Likes a lot of water and grows to 5-6 feet. Beautiful!!

Positive hankpage On Feb 12, 2003, hankpage from Point Pleasant Beach, NJ (Zone 7a) wrote:

Beautiful blooms all summer. Heavy blooms may need support.(I use fishing line to a fence so it can't be seen easily)

Regional...

This plant has been said to grow in the following regions:

, (3 reports)
Peoria, Arizona
Tucson, Arizona
Yuma, Arizona
Fayetteville, Arkansas
Fallbrook, California
Fresno, California
Grass Valley, California
Loveland, Colorado
Altamonte Springs, Florida
Gainesville, Florida
Homosassa, Florida
Jacksonville, Florida
Valrico, Florida
Milledgeville, Georgia
Champaign, Illinois
Charleston, Illinois
Chicago, Illinois
Mount Prospect, Illinois
Peoria, Illinois
Plainfield, Illinois
Albion, Indiana
Atalissa, Iowa
Tompkinsville, Kentucky
Calhoun, Louisiana
Coushatta, Louisiana
Kentwood, Louisiana
Marrero, Louisiana
Zachary, Louisiana
Upper Marlboro, Maryland
Attleboro, Massachusetts
Dracut, Massachusetts
Roslindale, Massachusetts
Topsfield, Massachusetts
West Stockbridge, Massachusetts
Dearborn Heights, Michigan
Saint Louis, Missouri
Omaha, Nebraska
Point Pleasant Beach, New Jersey
Bellmore, New York
Croton On Hudson, New York
Mount Vernon, New York
Raleigh, North Carolina
Wilmington, North Carolina
Cleveland, Ohio
Columbus, Ohio
Garrettsville, Ohio
Pickerington, Ohio
Oklahoma City, Oklahoma
Talala, Oklahoma
Salem, Oregon
Stayton, Oregon
Allentown, Pennsylvania
Coopersburg, Pennsylvania
Lansdowne, Pennsylvania
Roscoe, Pennsylvania
Tionesta, Pennsylvania
Wakefield, Rhode Island
Bluffton, South Carolina
Conway, South Carolina
North Augusta, South Carolina
Plum Branch, South Carolina
Fairview, Tennessee
Middleton, Tennessee
Rockvale, Tennessee
Summertown, Tennessee
Austin, Texas (2 reports)
Belton, Texas
Broaddus, Texas
Coppell, Texas
Copperas Cove, Texas
Georgetown, Texas
Iredell, Texas
Lubbock, Texas (2 reports)
Nederland, Texas
Oakhurst, Texas
Royse City, Texas
San Antonio, Texas (2 reports)
Temple, Texas
Portsmouth, Virginia
Vienna, Virginia
Grand Mound, Washington
Olympia, Washington
Puyallup, Washington
Seattle, Washington
Martinsburg, West Virginia
Eau Claire, Wisconsin
Milwaukee, Wisconsin
Mukwonago, Wisconsin
Sauk City, Wisconsin
Sussex, Wisconsin



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