20-30 Days to maturity. Tropaeolum minus ’Empress of India’. Premium Organic Empress of India Nasturtium Microgreen Seeds. Empress of India microgreens are different in color than other microgreen varieties. Empress of India Nasturtium microgreens has a delicious peppery and distinct flavor! They are perfect for fresh dishes to add texture and spice. These are easy-to-grow microgreens that offer a ton of flavor and nutrients in return for minimal effort! ~220 seeds/oz.