Free Printable Number One: Fun Activities Printables for Everyone Premium Photo Numerical Number One in Creative Digital Art Style Number Tracing 1 Fancy Number 1 Vintage Telegram Elegant White Personalised Wedding. Heteranthera zosterifolia from South America is an extremely beautiful plant which forms a lot of side shoots and thus quickly forms a bushy plant group. Stems can become 30 50 cm tall and 6 12 cm wide. In strong light growth is intensive, and the plant must be pruned before it becomes so compact that no light reaches the lower leaves. Water roots often form on the stem. In open aquariums it forms small blue flowers if some shoots are allowed to spread on the surface. Product Details: Type: Stem Growth: High Light: Low Origin: South America Height: 20 30+ CO2: Medium