Plant Library

Other Names:  Roundleaf Groundsel, form. Senecio obovatus

Description:

A beautiful mounding perennial, producing spoon shaped, dark green basal leaves with purple undersides; showy, golden-yellow daisy-like flowers rise on sturdy stems in spring through summer; roots will colonize, achieving a groundcover effect over time

Ornamental Features

Roundleaf Ragwort features showy spikes of yellow daisy flowers with gold eyes rising above the foliage from early spring to early summer. Its serrated oval leaves remain dark green in color throughout the season.

Landscape Attributes

Roundleaf Ragwort is an herbaceous perennial with an upright spreading habit of growth. Its relatively coarse texture can be used to stand it apart from other garden plants with finer foliage.

This is a relatively low maintenance plant, and is best cleaned up in early spring before it resumes active growth for the season. It is a good choice for attracting bees and butterflies to your yard, but is not particularly attractive to deer who tend to leave it alone in favor of tastier treats. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;

• Spreading
• Suckering

Roundleaf Ragwort is recommended for the following landscape applications;

• Mass Planting
• Border Edging
• General Garden Use
• Groundcover
• Naturalizing And Woodland Gardens
• Container Planting

Planting & Growing

Roundleaf Ragwort will grow to be about 8 inches tall at maturity extending to 18 inches tall with the flowers, with a spread of 12 inches. When grown in masses or used as a bedding plant, individual plants should be spaced approximately 10 inches apart. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 10 years. As an herbaceous perennial, this plant will usually die back to the crown each winter, and will regrow from the base each spring. Be careful not to disturb the crown in late winter when it may not be readily seen!

This plant does best in partial shade to shade. It does best in average to evenly moist conditions, but will not tolerate standing water. This plant does not require much in the way of fertilizing once established. It is particular about its soil conditions, with a strong preference for rich, alkaline soils. It is somewhat tolerant of urban pollution. This species is native to parts of North America, and parts of it are known to be toxic to humans and animals, so care should be exercised in planting it around children and pets. It can be propagated by division.

Roundleaf Ragwort is a fine choice for the garden, but it is also a good selection for planting in outdoor pots and containers. It is often used as a 'filler' in the 'spiller-thriller-filler' container combination, providing a mass of flowers against which the larger thriller plants stand out. Note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.