Photo by Melody

PlantFiles: Lemon Yellow Rosemallow
Hibiscus calyphyllus

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Family: Malvaceae (mal-VAY-see-ee) (Info)
Genus: Hibiscus (hi-BIS-kus) (Info)
Species: calyphyllus (kal-ee-FIL-us) (Info)

Synonym:Hibiscus calycinus
Synonym:Hibiscus chrysantha
Synonym:Hibiscus rockii

» View all varieties of Hibiscus

One vendor has this plant for sale.

12 members have or want this plant for trade.

Height:
4-6 ft. (1.2-1.8 m)

Spacing:
4-6 ft. (1.2-1.8 m)

Hardiness:
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:
Pale Yellow
Chartreuse (Yellow-Green)

Bloom Time:
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Mid Fall
Blooms repeatedly

Foliage:
Herbaceous
Smooth-Textured

Other details:
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater
Suitable for growing in containers

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)

Patent Information:
Non-patented

Propagation Methods:
From herbaceous stem cuttings
From seed; direct sow after last frost

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds

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There are a total of 17 photos.
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Profile:

3 positives
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive saltcedar On Sep 15, 2011, saltcedar from Austin, TX (Zone 8b) wrote:

Lemon Yellow Rosemallow is tougher than it looks.
This plant has withstood 2 back to back hard Winters in the ground in Zone 8b.
Must have PM shade and regular water but it's a good bloomer in Austin, TX.

Positive Izhar On Apr 28, 2011, Izhar from Karachi
Pakistan (Zone 11) wrote:

The glowing flowers produce abundant nectar. Bees, wasps, ants adore them..

Positive htop On Apr 28, 2011, htop from San Antonio, TX (Zone 8b) wrote:

Lemon Yellow Rosemallow (Hibiscus calyphyllus) is native to tropical Central, East and southern Africa, Madagascar and the Mascarene Islands. It also can be found in South Africa and Yemen. It is a cultivated ornamental in other areas of the tropics and subtropics. It has naturalized in Hawaii. The natural habitat of Hibiscus calyphyllus is open bush, thickets and forests and it is often found along rivers. It grows to 1-1.8 meters (3-6 feet) tall and is often prostrate and straggly. I tie my plant's stems onto bamboo stakes to give it a more upright appearance. The light green leaves are obscurely to distinctly three to five lobed. The 8-10 cm (3-4 in) wide flowers are bright sulphur yellow with a deep maroon eye. It can be planted in full sun; however, my plant does better in morning sun and afternoon shade or filtered light shade. It needs a moderate amount of water on a regular basis.

Especially in East Africa, the leaves of Hibiscus calyphyllus are eaten as a vegetable. During the rainy season, they are collected from the wild, wilted, chopped and boiled mixed with other coarse vegetables. In Kenya, elephants forage on the leaves. In Uganda poles made from the stems are used for building by the Karamajong people and it is used in the construction of huts by the Maasai people. This plant is also a food source in the Okavango Delta. The flowers are cooked and eaten when there is a shortage of food. In Uganda and Tanzania, the bast fiber (skin fiber, the "inner bark") is made into rope. In DR Congo the leaves are used in a mixture with several other plant species to prepare a cure for ganglions in domestic animals. In Kenya and Tanzania the leaves are used as a dressing applied to wounds. The vapour of boiled roots is inhaled and the decoction drunk to treat pneumonia. Hibiscus calyphyllus is cultivated throughout the tropics and subtropics as an ornamental.

My plant is growing in a container and I place it in a greenhouse during really cold winters.

Regional...

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

Gulf Shores, Alabama
Orange Beach, Alabama
Glendale, Arizona
Amesti, California
De Land, Florida
Palm Valley, Florida
Zephyrhills, Florida
Lafayette, Tennessee
Austin, Texas
Belton, Texas
Bryan, Texas
Desoto, Texas
Magnolia, Texas
Richmond, Texas
San Antonio, Texas
Wyldwood, Texas



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