Ligularia Ragwort Flower (Ragwort)

The ragworts are members of the family Fabaceae. They grow from tropical areas of South America through Central America, Mexico and into northern Texas. Their leaves are opposite, with one side shorter than the other. The flowers have five petals each and a single seed pod at the top of the flower which contains seeds. The plants are known for their ability to produce large quantities of seeds.

These seeds can germinate quickly and spread rapidly. The seeds are usually white or pale pink in color, but they may also contain black, brown or even purple ones. Ragwort is considered to be a weed because it grows so densely in some parts of the world. However, it is very popular in many places where there is not enough room for other species.

How To Care For Ligularia Ragwort Flower

In order to keep your ragwort alive and healthy, you need to provide the following things: Watering: Provide regular watering of the plant. If possible, use a drip irrigation system. Humidity: Keep humidity levels around 70% during the day and 50% at night. Temperature: The ideal temperature for the plant is between 60 and 75 degrees. Fertilizer: You can use a standard fertilizer for your plant every two weeks.

Ligularia dentata (Toothed Ligularia)

Ligularia dentata is a member of the Asteraceae family and a native of eastern Canada. This species has become naturalized in the United States, particularly the New England states. This plant has been cultivated as an ornamental and grows to be around 2 feet tall. The leaves are deeply lobed with toothed margins. The flowers grow on terminal heads and are purple in color with darker veins.

They have a diameter of about 1 inch and the plants produce more than 10 heads during its blooming period, which is from mid-summer to early fall. The seeds are held in small pods that are less than 1/4 inch in length.

Ligularia stenocephala (Upright Ligularia)

Ligularia stenocephala is a species that is native to Korea, but it has also naturalized in the United States. This plant typically grows to be between 1 and 3 feet tall and is a perennial from rhizomes. The leaves are lanceolate-shaped and on petioles that are up to 2 inches long. The heads of flowers are terminal and have purple ligularia flower petals that are veined darker and covered in hair. The ligularia flower head is around 1 1/2 inches in diameter and they are produced between mid-summer and early fall.

The ligularia flower grows in clusters of 10 to 20. The seeds are contained in cypselae that are less than 3 millimeters long.

Ligularia dentata, Ligularia stenocephala and Ligularia species all require similar growing conditions. They grow best in rich, loose, well-draining soils. The soil should contain lots of organic matter and they prefer part sun to shade. This plant is tolerant of a range of pH levels (5 to 8) and while it thrives in moist soils, it doesn’t like ‘wet feet’.

Sources & references used in this article:

Clivorine, an otonecine pyrrolizidine alkaloid from Ligularia species, impairs neuronal differentiation via NGF-induced signaling pathway in cultured PC12 cells by A Xiong, AL Yan, CWC Bi, KYC Lam, GKL Chan… – Phytomedicine, 2016 – Elsevier

Element stewardship abstract for Senecio jacobaea by C Macdonald, MJ Russo – Nature Conservancy, Arlington, VA, 1989 – invasive.org

Landscaping with native plants of Minnesota by LM Steiner – 2011 – books.google.com

Herbaceous perennials by M Meehan, JE Klett, RA Cox – Gardening series. Flowers; no …, 1996 – mountainscholar.org

Pyrrolizidine alkaloids-tumorigenic components in Chinese herbal medicines and dietary supplements by PP Fu, YC Yang, Q Xia, MW Chou… – Journal of Food and …, 2002 – researchgate.net

Roses Love Garlic: Companion Planting and Other Secrets of Flowers by L Riotte – 2012 – books.google.com

Ornamental and garden plants: Controlling deer damage by D Hillock, K Toscano, D Elmore – 2011 – shareok.org

Great Sand Dunes National Monument and Preserve 2003 Vascular Plant Inventory by SS Panjabi, K Decker, G Doyle, DG Anderson – 2004 – mountainscholar.org

Plants producing pyrrolizidine alkaloids: sustainable tools for nematode management? by M Boppré, T Thoden – Nematology, 2010 – brill.com

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