They had lots of seeds on them. Any other specifics on care would be appreciated. The differentiation between a weed and a wildflower is where it is growing, and whether or not it is wanted. Mullein can occur naturally, but you can also purchase mulleins for the landscape. There are some very nice varieties available.
Mulleins are either a perennial or a biennial.
The biennials reseed themselves after they bloom, so they in effect can be almost considered a perennial. They all perform best in drier soils. Sow your mullein seeds in the fall. The Arkansas Cooperative Extension Service offers its programs to all eligible persons regardless of race, color, national origin, religion, gender, age, disability, marital or veteran status, or any other legally protected status, and is an Equal Opportunity Employer. The mention of any commercial product in this web site does not imply its endorsement by the University of Arkansas Cooperative Extension Service over other products not named, nor does the omission imply that they are not satisfactory.