Lobelia cardinalis 'small form' is a very interesting cultivar of the larger-growing standard form of L. cardinalis. It can be discerned from the latter by its rounder, coin-shaped leaves and the far smaller overall stature. Up to now, only Oriental Aquaria in Singapore is selling the true cultivar of this attractive small plant.

Lobelia cardinalis 'small form' is rather undemanding. Besides sufficient light (0.5 watts per litre) it only needs CO2 injection for optimal growth regarding size, colour and growth rate. A good supply of micro- and macronutrients should be assured, too (NO3 10-20 mg/l, PO4 1-2 mg/l).

A good nutrient supply, the addition of CO2 and sufficient light result in a very bushy habit and nice green colour.