75-90 Days to maturity. Ageratum houstonianum ’Dwarf Blue Mink’. Dwarf Blue Mink Ageratum Seeds. Non-GMO, ornamental, annual, open-pollinated flower seeds. Dwarf Blue Mink flower seeds grow one of the season’s most exclusive blooms of exotic and globe-shaped ageratum heads. Ageratum are somewhat hardy annual flower seeds that promise to excite any tired flowerbed or rock garden. Dwarf Blue Mink Ageratum flowers are native to the tropics of Central America and Mexico and thrive in many similar humid gardens in the United States. Also known as floss flower or Mexican Paintbrush. Approximately 200,000 seeds/oz.