USDA Hardiness Zone: 3-8. Beautiful colorful plant. The leaves of Hosta is rare purple that make a wonderful supplement for your home, garden or balcony. Hosta are easy to grow and completely hardy. Their preferred growing conditions include shade, semi-shade, and moist, well-drained soil that does not dry out. Attracting Pollinators. Bees are natural pollinators of hosta plants, as are the hummingbirds that frequent the tubular flowers. Uses. Hosta is a great ornamental plant, perfect for decorating gardens, offices, balconies, windows, etc. Sow. Sow in spring into small pots of seed compost and place in a cold frame. Keep the soil at around degrees F. Hosta seed germinates in 7 to 14 days. For Instructions On How To Grow Hosta Hosta can be grown from seeds collected from dried seed heads in the fall. Sow in spring into small pots of seed compost and place in a cold frame. Place the seedlings in separate pots and continue growing. Hosta seed germinates in 7 to 14 days. This is mainly dependent on temperature. Germination has been reported in as little as two to four days with potting mix temperatures in the 80 degree range.