How to Protect Mullein, Roripa

Protect mullein, roripa from excess moisture image by Martin Labar (going on hiatus)/


Mullein, roripa is a Greek species of the mullein biennial. It has elegant, strong stems and filigree, with lemon yellow blooms that grow above a rosette of dark green leaves. The plant does well in a very well drained soil in a sunny spot such as in a rock garden. It thrives even more if planted in a protected area. While roripa mullein is a hardy plant, the growth potential increases when it's protected from excess water and freezing temperatures.

Step 1

Protect roripa mullein from root rot by making sure there is no standing water in the planting bed. The biennial has average moisture needs but should not be kept too wet.

Step 2

Water the plant when the soil is drying out, which should be every 2-3 days. It should not be over-watered or it may rot and die.

Step 3

Buy mulch such as cedar mulch, straw or hay from a garden store or nursery in the fall. Leaves also work well.

Step 4

Mulch the planting area when the ground is cold, such as when there is an inch or two of frost on the ground. This will protect the plants from the alternate freezing and thawing that occurs around wintertime.

Step 5

Keep the soil relatively moist as the ground freezes, to ensure successful winterizing.

Step 6

Add 4-6 inches of mulch to the crowns of the plants. This will protect the rootballs and ensure a stronger plant the following year.

Things You'll Need

  • Mulch


  • Ohio Perennial and Biennial Weed Guide
  • Bachmans
  • Rare plants
Keywords: roripa mullein, biennial, winterizing

About this Author

Based in New York State, Kelly Shetsky started writing in 1999. She is a broadcast journalist-turned Director of Marketing and Public Relations and has experience researching, writing, producing and reporting. She writes for several websites, specializing in gardening, medical, health and fitness, entertainment and travel. Shetsky has a Bachelor of Arts in communications from Marist College.

Photo by: Martin Labar (going on hiatus)/