Tabby Cat Grass Indoor Pet Grass Seeds - ‘Hordeum Vulgare Variegata’ Approx 100 Seeds This cat grass is a variety of Barley, Hordeum vulgare ‘Variegata’, which provides vitamins & fibre in a cat’s diet. This quick growing perennial grass reaches 15cm in just six weeks in a 10cm pot. Hordeum also makes an attractive ornamental grass for the perennial border. 60cm. To grow cat grass as a houseplant, sow indoors at any time. Sow seeds inch deep in seed starting formula in the container where the plants will grow. Keep the soil moist at 70 degrees F/21 degrees C. Seedlings emerge in 7-14 days. Tabby Cat Grass Indoor Pet Seeds -