Has shown that plants grown in Jardinier Planters have a more developed root system than plants top watered. Sub irrigation also has proved to eliminate the harmful build up of salts due to top watering.

Since Jardinier Planters are a closed system, fertilisers and pesticides can be safely confined to within the planters.

As water conservation becomes more and more important to cities, states, countries and the world, Jardinier Alternative Sub-Irrigation Systems (ASIS), make more and more sense. No other irrigation systems developed to date offers all the solutions to the world's water problems that Jardinier offers, at a cost that makes economic sense.

After 3 years of extensive research in America,
at the University of California / Riverside under the
direction and intense supervision of Dr. Wesley Jarrell.

Jardinier is a line of proprietary sub irrigation systems that were developed and patented in 1989 .

Jardiniers original intent was to develop a more effective growing system for interior and exterior containerised foliage by using sub-irrigation technology and the principles of capillary action.

Jardinier Sub Irrigation Systems has proved to be so superior to traditional irrigation methods that over the past 15 years Jardinier has become the sub irrigation growing system of preference for the interior landscaper and maintenance professional in the USA.

Our testing confirms what many professional interior plant maintainers have long known. Sub-irrigation is far superior to top watering inside plants. Unfortunately, this information is little publicized to the public.

Royal Horticultural Society Advice from their Web page ...

Water

Indoor plants more commonly die of over-watering, than from drought. Over-watering eventually leads to root death and collapse of the plant. Keep plants just moist. Avoid letting the compost dry out completely. As the compost dries it becomes lighter in weight and often paler in colour. Water from below allowing the plant to take up water as it is needed, but allow excess to drain away. Brown tips and margins of the leaves often indicate that the compost or atmosphere is too dry. Always use tepid water to prevent temperature shocks to the roots.

Feeding

Liquid feeds are generally the best for houseplants. Choose one high in potash for flowering pot plants, more balanced for foliage plants. Slow-release fertiliser tabs or granules will last the growing season, but may concentrate the nutrients to one side of the pot. Specialist feeds are available for certain groups of plants such as orchids and citrus. Most plants should only be fed when actively growing in March to September; flowering plants should be fed when in bud and flower.