In order to improve the growth of Impatiens and Oleander plants, several experiments were conducted in which chabazitic- zeolites were added to cultivation substrates to assess their influence on plant growth and reduction of fertilizer use. The experiment on Impatiens and Oleander involved 4 treatments: control with total fertilization; control with reduced fertilization; substrate with chabazite and total fertilization; substrate with chabazite and reduced fertilization. The results showed an improvement in the growth of Impatiens and oleander plants and a reduction in the use of fertilizers in substrates with added chabazite. Further experiments will be carried out in order to have more data on the growth of the different ornamental and horticultural species, also based on the variation in the percentage of chabazite in the mixture.
