Jaumea Carnosa

Description

Jaumea Carnosa, also known as marsh jaumea or marsh wireweed, is a flowering perennial plant that belongs to the sunflower family (Asteraceae). It is commonly found in wetlands, marshes, and along the coastlines of California, Arizona, and Mexico. The plant can grow up to 3 feet tall and 3 feet wide, with a woody stem that bears numerous branches and green leaves. It produces small, yellow flowers that bloom from August to October, followed by tiny fruits that contain seeds.

Taxonomic Information

Appearance

Jaumea Carnosa has a bushy appearance with a dense foliage of green leaves that are alternate and lance-shaped. The leaves are around 1-2 inches long and 0.25-0.5 inches wide, with a smooth or slightly rough texture. The stem is woody and reddish-brown, with numerous branches that are covered in leaves. The plant produces small, yellow flowers that are around 0.25 inches wide and bloom in clusters at the top of the stem. The flowers are followed by tiny, brown fruits that contain seeds.

Care Guide

Jaumea Carnosa is a hardy plant that requires minimal care. Here are some tips to ensure its optimal growth:

• Water: Jaumea Carnosa prefers moist soil but can also tolerate periods of drought. Water the plant regularly but avoid overwatering or allowing the soil to become waterlogged.
• Fertilization: Jaumea Carnosa does not require fertilization, but a light application of a balanced fertilizer in spring can promote growth.
• Soil: Jaumea Carnosa grows best in well-draining soil that is rich in organic matter. The soil pH should be between 6.0 and 7.5.
• Sunlight: Jaumea Carnosa prefers full sun but can also tolerate partial shade.
• Hardiness Zones: Jaumea Carnosa is suitable for planting in USDA hardiness zones 8-11.

Common Pests & Diseases

Jaumea Carnosa is generally resistant to pests and diseases, but it may be affected by the following:

• Aphids: Aphids are small, sap-sucking insects that can cause distortion and discoloration of the leaves. They can be controlled by spraying the plant with a solution of water and insecticidal soap.
• Whiteflies: Whiteflies are small, flying insects that feed on the underside of the leaves, causing yellowing and stunted growth. They can be controlled by spraying the plant with a solution of water and insecticidal soap.
• Powdery Mildew: Powdery mildew is a fungal disease that appears as a white, powdery coating on the leaves. It can be prevented by ensuring good air circulation around the plant and avoiding overhead watering.

Habitat

Jaumea Carnosa is native to wetlands, marshes, and coastal areas of California, Arizona, and Mexico. It prefers to grow in areas with moist soil and full sun. The plant can also be found in disturbed areas such as roadways and ditches.

Question and Answer

Q: Is Jaumea Carnosa poisonous?
A: No, Jaumea Carnosa is not poisonous to humans or animals.

Q: Can Jaumea Carnosa be grown in a container?
A: Yes, Jaumea Carnosa can be grown in a container as long as it has sufficient space to grow and the soil is kept moist.

Q: How often should I water Jaumea Carnosa?
A: Water Jaumea Carnosa regularly, but avoid overwatering or allowing the soil to become waterlogged.

Q: When is the best time to prune Jaumea Carnosa?
A: Prune Jaumea Carnosa in late winter or early spring before new growth begins.

Related Plants

• Jaumea Magnifica
• Jaumea Carnosa ‘Compacta’
• Jaumea Carnosa ‘Nana’
• Jaumea Carnosa ‘Variegata’

References

• “Jaumea Carnosa.” Jepson Herbarium, UC Berkeley, 2021, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=31879. Accessed 29 Nov. 2021.
• “Jaumea Carnosa.” USDA Natural Resources Conservation Service, 2021, https://plants.usda.gov/home/plantProfile?symbol=JACA2. Accessed 29 Nov. 2021.
• “Marsh Jaumea (Jaumea Carnosa).” California Native Plant Society, n.d., https://www.cnps.org/gardening/gardening-with-natives/plant-profiles/marsh-jaumea-jaumea-carnosa. Accessed 29 Nov. 2021.