Collect seeds from healthy, high-yielding plants (600 g/ha of fresh seed). The source gives an acid seed treatment before sowing — do this only with guidance from your officer. Sow in beds of rotted cattle manure, wood ash and jungle soil, cover with fine sand, mulch, shade and keep moist; germination starts after a month. Move one-year-old seedlings to a shaded secondary nursery at 20 x 20 cm and transplant at 18–22 months. Suckers from high-yielding plants can also be multiplied in clonal nurseries. Plant in 60 cm pits filled with compost and topsoil (contour planting on slopes): Mysore type 3 x 3 m, Malabar 2 x 2 m, Vazhukka 2.4 x 2.4 m.
Follow the instructions on the product label. Consult your local Agriculture Officer before use.
Pending expert review
Source
Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Cardamom – Seeds and sowing; secondary nursery; propagation from suckers; spacing, pp. 168–169
