Hardiness: USDA Zone 2a: to -45.5 °C (-50 °F) USDA Zone 2b: to -42.7 °C (-45 °F) USDA Zone 3a: to -39.9 °C (-40 °F) USDA Zone 3b: to -37.2 °C (-35 °F) USDA Zone 4a: to -34.4 °C (-30 °F) USDA Zone 4b: to -31.6 °C (-25 °F) 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) USDA Zone 10a: to -1.1 °C (30 °F) USDA Zone 10b: to 1.7 °C (35 °F) USDA Zone 11: above 4.5 °C (40 °F)
Sun Exposure: Sun to Partial Shade
Bloom Color: Pink Rose/Mauve White/Near White
Bloom Time: Mid Summer
Foliage: Deciduous Veined
Other details: Requires consistently moist soil; do not let dry out between waterings
Soil pH requirements: 5.6 to 6.0 (acidic) 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline)
Patent Information: Non-patented
Propagation Methods: From seed; direct sow after last frost
Seed Collecting: Collect seedhead/pod when flowers fade; allow to dry Allow seedheads to dry on plants; remove and collect seeds Properly cleaned, seed can be successfully stored
We live on Lake Fork, that is near Tyler Texas, there is one in the back flower bed that was here when they built the house in 1995-It blooms every year. These also grow wild in the Mississippi Delta, you can see them all along the highway, and in the cotton fields--
On Sep 28, 2003, BUFFY690 from Prosperity, SC (Zone 7b) wrote:
I have moved 2 of these plant into my garden. Where I live they have pulled the lake down I mean way down and I found tow one branched plants where they will not live when the water comes back up do I transplanted them into my garden. One is the white and the other is pink. The pink was ever so light almost white and with the change in soil I guess it now has a very strong pink color. The e=white has took off and is actually is a plant now. It is not really attractive as something has been eating the leaves but I feel sure it will come right back out. The 7 foot tall plant is beside my dock and it is ever faithful every year we can expect to pass by the pretty flowers.
Hibiscus laevis is a widely distributed native species "endemic" to the Mississippi and Ohio River valley drainages; especially common in riverine areas of Texas and Louisianna but ranging up the Miss. valley to Illinois and eastward into Michigan. Colors range from white to deep pink, usually with small red eyespots and somewhat to very tight, tubular calyx and large, round, very fuzzy seeds. Leaves very dimorphic across different populations; H. dasycalyx, a Texas endemic species, is similar to H. laevis, but has extremely hairy calyces and frequently fuzzy pods, whereas H. laevis populations are hairless (all organs, including leaves).
On Aug 21, 2001, Terry from Murfreesboro, TN (Zone 7a) wrote:
Halberd-leaf hibiscus is easily identified by its distinctive 3-lobed leaves. A large shrubby plant, it provides large beautiful blooms in colors ranging from pure white to dark pink (all with a maroon "bulls-eye" throat.)
Sources indicate that this plant is also known by H. militaris, an apt name since the leaf shape resembles a halberd, a type of spearlike weapon utilized in early warfare.
This plant has been said to grow in the following regions:
Pike Creek, Delaware Barbourville, Kentucky Calvert City, Kentucky Owensboro, Kentucky Montz, Louisiana Violet, Louisiana Bellaire, Michigan St Paul, Minnesota Frenchtown, New Jersey Kure Beach, North Carolina Prosperity, South Carolina Center, Texas Dalworthington Gardens, Texas Eagle Mountain, Texas Houston, Texas Kurten, Texas Longview, Texas Pottsboro, Texas San Leanna, Texas Finley, Washington