The Performance of Pelargonium Stockplants in Different Potting Mixtures

Abstract

The possibility of substituting peatmoss with tobacco industry residues, wood shavings, sawdust, spent ground coffee, coffee parchment, dry coffee leaves, sugarcane bagasse, or Caño Tiburones muck in potting mixture for Pelargonium stockplants was investigated. The different materials were mixed in 1:1, 1:3, or 3:1 proportions with Cataño sand or Cialitos clay (an Oxisol). Dry coffee leaves and sugarcane bagasse consistently gave as good results as peatmoss. None of the other materials tested compared favorably with peatmoss for the growth of Pelargonium stock plants.