Heart Fern Hemionitis Arifolia Air Purifying Houseplants, 4" Pot. Fully rooted potted fern. Prefer moderate temps and bright light with little to no direct sun(early a.m. or filtered sun OK). This type of fern are epiphytes and can be grown upright in a pot or basket or mounted on wood planks, cork tiles, tree bark tiles, etc. They like fast draining soil. Keep soil moist at all times but never soggy. Good air flow is beneficial. Prefer temps 65-85F and high humidity. Grow quite large over time. Shipped in 4" pot.